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Journal articles on the topic 'Methane Reforming Catalysts'

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Published: 6 September 2023

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1

Manan, Wan Nabilah, Wan Nor Roslam Wan Isahak, and Zahira Yaakob. "CeO2-Based Heterogeneous Catalysts in Dry Reforming Methane and Steam Reforming Methane: A Short Review." Catalysts 12, no. 5 (2022): 452. http://dx.doi.org/10.3390/catal12050452.

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Transitioning to lower carbon energy and environment sustainability requires a reduction in greenhouse gases such as carbon dioxide (CO2) and methane (CH4) that contribute to global warming. One of the most actively studied rare earth metal catalysts is cerium oxide (CeO2) which produces remarkable improvements in catalysts in dry reforming methane. This paper reviews the management of CO2 emissions and the recent advent and trends in bimetallic catalyst development utilizing CeO2 in dry reforming methane (DRM) and steam reforming methane (SRM) from 2015 to 2021 as a way to reduce greenhouse g
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2

Jiang, Hong Tao, Hui Quan Li, and Hao Fan. "Tri-Reforming of Methane over Pt Modified Ni/MgO Catalysts under Atmospheric Pressure – Thermal Distribution in the Catalyst Bed." Applied Mechanics and Materials 252 (December 2012): 255–58. http://dx.doi.org/10.4028/www.scientific.net/amm.252.255.

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Thermal distribution in catalyst bed was investigated for the fixed-bed tri-reforming of methane over Pt modified Ni/MgO catalysts under atmospheric pressure, 850 °C, and space velocity of 2000−20000 h−1. The effects of the W/F on the thermal distribution of different catalysts were examined. The results indicated that for Pt modified Ni/MgO catalysts, the temperature profile depended on catalysts preparation method. According to the thermal distribution, for Pt modified Ni/MgO catalysts prepared by sequence method, the catalyst bed can be divided into tow zones: auto-thermo reforming zone and
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3

Meloni, Eugenio, Marco Martino, and Vincenzo Palma. "A Short Review on Ni Based Catalysts and Related Engineering Issues for Methane Steam Reforming." Catalysts 10, no. 3 (2020): 352. http://dx.doi.org/10.3390/catal10030352.

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Hydrogen is an important raw material in chemical industries, and the steam reforming of light hydrocarbons (such as methane) is the most used process for its production. In this process, the use of a catalyst is mandatory and, if compared to precious metal-based catalysts, Ni-based catalysts assure an acceptable high activity and a lower cost. The aim of a distributed hydrogen production, for example, through an on-site type hydrogen station, is only reachable if a novel reforming system is developed, with some unique properties that are not present in the large-scale reforming system. These
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4

Tungatarova, Svetlana, Galina Xanthopoulou, George Vekinis, et al. "Ni-Al Self-Propagating High-Temperature Synthesis Catalysts in Dry Reforming of Methane to Hydrogen-Enriched Fuel Mixtures." Catalysts 12, no. 10 (2022): 1270. http://dx.doi.org/10.3390/catal12101270.

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The worldwide increase in demand for environmentally friendly energy has led to the intensification of work on the synthesis of H2-containing fuel. The dry reforming of methane has become one of the most important avenues of research since the consumption of two greenhouse gases reduces the rate of global warming. A study of NiAl composite materials as catalysts for methane reforming has been carried out. Self-propagating high-temperature synthesis (SHS) has been used to produce NiAl catalysts. Comparative studies were carried out regarding the dry reforming and partial oxidation of methane, a
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5

Yu, Xiaopeng, Fubao Zhang, and Wei Chu. "Effect of a second metal (Co, Cu, Mn or Zr) on nickel catalysts derived from hydrotalcites for the carbon dioxide reforming of methane." RSC Advances 6, no. 74 (2016): 70537–46. http://dx.doi.org/10.1039/c6ra12335j.

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6

Cho, Yohei, Akira Yamaguchi, and Masahiro Miyauchi. "Photocatalytic Methane Reforming: Recent Advances." Catalysts 11, no. 1 (2020): 18. http://dx.doi.org/10.3390/catal11010018.

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Methane reforming is an important potential technology for solving both environmental and energy problems. This technology is important because methane is counted as a greenhouse gas, but on the other hand, it can be reformed into industrially valuable compounds. More research has focused on photocatalytic methane reforming, which has a higher activity than thermal catalysts under dark conditions. The reaction selectivity toward specific products in photocatalytic methane reforming is sometimes different from thermal catalyst systems. Herein, we discuss recent advances in photocatalytic methan
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7

Osaki, Toshihiko, and Toshiaki Mori. "The Catalysis of NiO-Al2O3 Aerogels for the Methane Reforming by Carbon Dioxide." Advances in Science and Technology 45 (October 2006): 2137–42. http://dx.doi.org/10.4028/www.scientific.net/ast.45.2137.

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The aerogels of nickel-alumina system have been synthesized from aluminum triisoprppoxide and nickel glycoxide by sol-gel and subsequent supercritical drying, and the catalysis of NiO-Al2O3 aerogels for the methane reforming by carbon dioxide have been examined. The aerogel catalysts showed higher activity for the reforming than the impregnation catalysts prepared by a conventional impregnation method, on the other hand, the carbon deposition was much less significant on the aerogel catalysts than on the impregnation catalysts. By TEM and XRD observations, it was found for aerogel catalysts th
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8

Sivasangar, S., and Yun Hin Taufiq-Yap. "The Effect of CeO2 and Fe2O3 Dopants on Ni/ Alumina Based Catalyst for Dry Reforming of Methane to Hydrogen." Advanced Materials Research 364 (October 2011): 519–23. http://dx.doi.org/10.4028/www.scientific.net/amr.364.519.

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Methane reforming is the most feasible techniques to produce hydrogen for commercial usage. Hence, dry reforming is the environment friendly method that uses green house gases such as CO2and methane to produce fuel gas. Catalysts play a vital role in methane conversion by enhancing the reforming process. In this study Ni/γ-Al2O3was selected as based catalyst and CeO2and Fe2O3dopants were added to investigate their effect on catalytic activity in dry reforming. The catalysts synthesized through wet impregnation method and characterized by using XRD, TEM and SEM-EDX. The catalytic tests were car
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9

Garbarino, Gabriella, Federico Pugliese, Tullio Cavattoni, Guido Busca, and Paola Costamagna. "A Study on CO2 Methanation and Steam Methane Reforming over Commercial Ni/Calcium Aluminate Catalysts." Energies 13, no. 11 (2020): 2792. http://dx.doi.org/10.3390/en13112792.

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Three Ni-based natural gas steam reforming catalysts, i.e., commercial JM25-4Q and JM57-4Q, and a laboratory-made catalyst (26% Ni on a 5% SiO2–95% Al2O3), are tested in a laboratory reactor, under carbon dioxide methanation and methane steam reforming operating conditions. The laboratory catalyst is more active in both CO2 methanation (equilibrium is reached at 623 K with 100% selectivity) and methane steam reforming (92% hydrogen yield at 890 K) than the two commercial catalysts, likely due to its higher nickel loading. In any case, commercial steam reforming catalysts also show interesting
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10

O'Malley, Alexander J., Stewart F. Parker, and C. Richard A. Catlow. "Neutron spectroscopy as a tool in catalytic science." Chemical Communications 53, no. 90 (2017): 12164–76. http://dx.doi.org/10.1039/c7cc05982e.

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The unique power of neutron spectroscopy to probe molecular behaviour in catalytic systems is illustrated. Vibrational spectroscopy and quasielastic scattering techniques are introduced, along with their use in probing methanol-to-hydrocarbons and methane reforming catalysis, and also hydrocarbon behaviour in microporous catalysts.
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11

Gomes, Ruan, Denilson Costa, Roberto Junior, et al. "Dry Reforming of Methane over NiLa-Based Catalysts: Influence of Synthesis Method and Ba Addition on Catalytic Properties and Stability." Catalysts 9, no. 4 (2019): 313. http://dx.doi.org/10.3390/catal9040313.

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CO2 reforming of CH4 to produce CO and H2 is a traditional challenge in catalysis. This area is still very active because of the potentials offered by the combined utilization of two green-house gases. The development of active, stable, and economical catalysts remains a key factor for the exploitation of natural gas (NG) with captured CO2 and biogas to produce chemicals or fuels via syngas. The major issue associated with the dry reforming process is catalyst deactivation by carbon deposition. The development of suitable catalyst formulations is one strategy for the mitigation of coking which
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12

Dedov, A. G., A. S. Loktev, V. A. Arkhipova, et al. "A New Approach to the Preparation of Stable Oxide-Composite Cobalt–Samarium Catalysts for the Production of Hydrogen by Dry Reforming of Methane." Processes 11, no. 8 (2023): 2296. http://dx.doi.org/10.3390/pr11082296.

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A new approach to preparing a series of Co/Sm2O3 catalysts for hydrogen production by the dry reforming of methane has been developed. The catalyst precursors were synthesized with a simple method, including the evaporation of aqueous solutions of cobalt and samarium nitrates, followed by a short-term calcination of the resulting material. The as-prepared and spent catalysts were characterized using X-ray diffraction, scanning electron microscopy, transmission electron microscopy, temperature-programmed reduction, and thermogravimetric analysis. The content of cobalt in the synthesized materia
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13

Itkulova, Sholpan S. "Carbon Dioxide Reforming of Methane over Zeolite-containing Catalysts." Eurasian Chemico-Technological Journal 11, no. 3 (2016): 231. http://dx.doi.org/10.18321/ectj285.

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<p>Reforming of methane by carbon dioxide (dry reforming of methane) has been studied over the series of the 5% Со-М/Al<sub>2</sub>O<sub>3</sub>+ zeolite catalysts. The effect of zeolite (type, module, and amount) added to support composition on performance of the Со-М/Al<sub>2</sub>O<sub>3</sub> catalyst in dry reforming has been examined. It has been shown that syngas is a main product of dry reforming over the zeolite-containing catalysts. Also, some amount (up to 3%) of acetic acid is produced. The yield of syngas and acetic acid depend
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14

Ravil Mustafin and Igor Karpilov. "Effect of the Catalyst Shapes and the Packed Bed Structure on the Efficiency of Steam Methane Reforming." Journal of Advanced Research in Fluid Mechanics and Thermal Sciences 104, no. 1 (2023): 124–40. http://dx.doi.org/10.37934/arfmts.104.1.124140.

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One of the promising technologies for on-board hydrogen production is methane steam reforming in reactor with packed bed. The study of the effect of various catalytic packing arrangements on the steam methane reforming process is of considerable interest. The present article analyses the influence of catalyst shapes and packing arrangement on steam methane reforming reactions efficiency. The reformer tube contains several packings with a changing relative position; additionally, two forms of catalysts, a ball and a cylinder, are also used. The pressure drop depending on the packing location, m
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15

Imada, Syota, Xiaobo Peng, Zexing Cai, et al. "NiYAl-Derived Nanoporous Catalysts for Dry Reforming of Methane." Materials 13, no. 9 (2020): 2044. http://dx.doi.org/10.3390/ma13092044.

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Dry reforming of methane can be used for suppressing the rapid growth of greenhouse gas emissions. However, its practical implementation generally requires high temperatures. In this study, we report an optimal catalyst for low-temperature dry reforming of methane with high carbon coking resistance synthesized from NiYAl alloy. A facile two-step process consisting of preferential oxidation and leaching was utilized to produce structurally robust nanoporous Ni metal and Y oxides from NiYAl4. The catalyst exhibited an optimal carbon balance (0.96) close to the ideal value of 1.0, indicating the
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16

Kuang, Xiao-Gang, Li Zhang, Yan-Lun Ren, and Xing-Wei Wang. "Process intensification of hydrogen production by steam reforming of methane over structured channel packing catalysts." E3S Web of Conferences 385 (2023): 02018. http://dx.doi.org/10.1051/e3sconf/202338502018.

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The industrial methane steam reforming reaction usually employs particulate catalyst that are easy to prepare and cost-effective, but suffer from problems such as high reactor pressure drop and low overall catalyst utilization. In this study, the Ni-Al2CaO4 powder prepared by the equal volume impregnation method was subjected to particle size control using a pressing method, and was made into catalyst particles of different sizes. Some of the catalysts were filled into honeycomb structures with cordierite and metal substrates, respectively, to prepare regular channel packing catalysts. The dif
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17

Hu, Yun Hang, and Eli Ruckenstein. "Comment on “Dry reforming of methane by stable Ni–Mo nanocatalysts on single-crystalline MgO”." Science 368, no. 6492 (2020): eabb5459. http://dx.doi.org/10.1126/science.abb5459.

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Song et al. (Reports, 14 February 2020, p. 777) ignore the reported efficient Ni/MgO solid-solution catalysts and overstate the novelty and importance of the Mo-doped Ni/MgO catalysts for the dry reforming of methane. We show that the Ni/MgO solid-solution catalyst that we reported in 1995, which is efficient and stable for the dry reforming, is superior to the Mo-doped Ni/MgO catalyst.
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18

Zhang, Chengyang, Renkun Zhang, Hui Liu, et al. "One-Step Synthesis of Highly Dispersed and Stable Ni Nanoparticles Confined by CeO2 on SiO2 for Dry Reforming of Methane." Energies 13, no. 22 (2020): 5956. http://dx.doi.org/10.3390/en13225956.

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Sintering and carbon deposition are the two main ways to deactivate Ni-based catalysts during methane reforming. Herein, a stable Ni-CeO2/SiO2(CSC) catalyst was prepared by a one-step colloidal solution combustion method (CSC) and used for dry reforming of methane. In the catalyst, the small Ni particles were confined by CeO2 particles and highly dispersed on the surface of SiO2, forming a spatial confinement structure with a rich Ni-CeO2 interface in the catalyst. The Ni-CeO2/SiO2(CSC) catalyst prepared by the one-step CSC method exhibited superior activity at 700 °C during dry reforming of m
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19

Saavedra Lopez, Johnny, Vanessa Lebarbier Dagle, Chinmay A. Deshmane, Libor Kovarik, Robert S. Wegeng, and Robert A. Dagle. "Methane and Ethane Steam Reforming over MgAl2O4-Supported Rh and Ir Catalysts: Catalytic Implications for Natural Gas Reforming Application." Catalysts 9, no. 10 (2019): 801. http://dx.doi.org/10.3390/catal9100801.

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Solar concentrators employed in conjunction with highly efficient micro- and meso-channel reactors offer the potential for cost-effective upgrading of the energy content of natural gas, providing a near-term path towards a future solar-fuel economy with reduced carbon dioxide emissions. To fully exploit the heat and mass transfer advantages offered by micro- and meso-channel reactors, highly active and stable natural gas steam reforming catalysts are required. In this paper, we report the catalytic performance of MgAl2O4-supported Rh (5 wt.%), Ir (5 wt.%), and Ni (15 wt.%) catalysts used for s
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20

Khan, Wasim Ullah, Mohammad Rizwan Khan, Rosa Busquets, and Naushad Ahmad. "Contribution of Oxide Supports in Nickel-Based Catalytic Elimination of Greenhouse Gases and Generation of Syngas." Energies 14, no. 21 (2021): 7324. http://dx.doi.org/10.3390/en14217324.

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Carbon dioxide and/or dry methane reforming serves as an effective pathway to mitigate these greenhouse gases. This work evaluates different oxide supports including alumina, Y-zeolite and H-ZSM-5 zeolite for the catalysis of dry reforming methane with Nickel (Ni). The composite catalysts were prepared by impregnating the supports with Ni (5%) and followed by calcination. The zeolite supported catalysts exhibited more reducibility and basicity compared to the alumina supported catalysts, this was assessed with temperature programmed reduction using hydrogen and desorption using carbon dioxide.
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21

Yuan, Bo, Tao Zhu, Yiwei Han, Xueli Zhang, Meidan Wang, and Chen Li. "Deactivation Mechanism and Anti-Deactivation Measures of Metal Catalyst in the Dry Reforming of Methane: A Review." Atmosphere 14, no. 5 (2023): 770. http://dx.doi.org/10.3390/atmos14050770.

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In recent decades, the massive emission of greenhouse gases, such as carbon dioxide and methane, into the atmosphere has had a serious impact on the ecological environment. The dry reforming of carbon dioxide and methane to syngas cannot only realize the resource utilization of methane and carbon dioxide but also reduce global climate change. It is of great significance in carbon emission reduction. Owing to the dry reforming of methane (DRM) being a strongly endothermic reaction, it needs to be carried out under high-temperature conditions. It makes the catalyst have problems of the sintering
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22

Hua, Wei, Yong Chuan Dai, and Hong Tao Jiang. "Noble Metal Catalysts for Methane Reforming in Material Application Engineering." Advanced Materials Research 648 (January 2013): 83–87. http://dx.doi.org/10.4028/www.scientific.net/amr.648.83.

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Reforming of methane is an important route to produce sygas. In this paper, recent progresses of noble metals (Rh, Ru, Ir, Pt, Pd) catalysts for methane reforming in material application engineering is reviewed. The discussion mainly focuses on catalytic performance of noble metal catalysts or noble metal promoted Ni catalysts in methane reforming reaction. Effects of noble metals, supports and preparation methods on the catalytic activity, selectivity, coke deposition and stability of catalysts have been briefly summarized. In conclusion, Rh as active component, Pd as material for membrane re
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23

Lanre, Mahmud S., Ahmed E. Abasaeed, Anis H. Fakeeha, et al. "Lanthanum–Cerium-Modified Nickel Catalysts for Dry Reforming of Methane." Catalysts 12, no. 7 (2022): 715. http://dx.doi.org/10.3390/catal12070715.

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The catalyst MNi0.9Zr0.1O3 (M = La, Ce, and Cs) was prepared using the sol–gel preparation technique investigated for the dry reforming of methane reaction to examine activity, stability, and H2/CO ratio. The lanthanum in the catalyst LaNi0.9Zr0.1O3 was partially substituted for cerium and zirconium for yttrium to give La0.6Ce0.4Ni0.9Zr0.1-xYxO3 (x = 0.05, 0.07, and 0.09). The La0.6Ce0.4Ni0.9Zr0.1-xYxO3 catalyst’s activity increases with an increase in yttrium loading. The activities of the yttrium-modified catalysts La0.6Ce0.4Ni0.9Zr0.03Y0.07O3 and La0.6Ce0.4Ni0.9Zr0.01Y0.09O3 are higher than
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24

Macario, A., P. Frontera, S. Candamano, F. Crea, P. De Luca, and P. L. Antonucci. "Nanostructured Catalysts for Dry-Reforming of Methane." Journal of Nanoscience and Nanotechnology 19, no. 6 (2019): 3135–47. http://dx.doi.org/10.1166/jnn.2019.16651.

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The manuscript deals on the main progress achieved by global scientific research on the development of nanostructured catalysts for dry-reforming reaction. The importance to have a global vision on this topic is strictly related to the most currently and important challenges in the sustainable energy production. In fact, dry-reforming is one of the few known processes in which greenhouse gases are utilized as reactants (methane and carbon dioxide) to produce syngas. Syngas represents the basis for liquid fuel production by Fischer-Tropsch process. In this broad and current context, the catalys
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25

Wysocka, Izabela, Jan Hupka, and Andrzej Rogala. "Catalytic Activity of Nickel and Ruthenium–Nickel Catalysts Supported on SiO2, ZrO2, Al2O3, and MgAl2O4 in a Dry Reforming Process." Catalysts 9, no. 6 (2019): 540. http://dx.doi.org/10.3390/catal9060540.

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Dry reforming of methane (DRM) is an eco-friendly method of syngas production due to the utilization of two main greenhouse gases—methane and carbon dioxide. An industrial application of methane dry reforming requires the use of a catalyst with high activity, stability over a long time, and the ability to catalyze a reaction, leading to the needed a hydrogen/carbon monoxide ratio. Thus, the aim of the study was to investigate the effect of support and noble metal particles on catalytic activity, stability, and selectivity in the dry reforming process. Ni and Ni–Ru based catalysts were prepared
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Asencios, Yvan J. O., Kariny F. M. Elias, Andressa de Zawadzki, and Elisabete M. Assaf. "Synthesis-Gas Production from Methane over Ni/CeO2 Catalysts Synthesized by Co-Precipitation Method in Different Solvents." Methane 1, no. 2 (2022): 72–81. http://dx.doi.org/10.3390/methane1020007.

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Ni/CeO2 catalysts were synthesized by the coprecipitation method in a basic medium, using different solvents: water, methanol, ethanol, and isopropanol (Ni content, 10% wt.). These catalysts were tested in the production of syngas through the oxidative reforming of methane (ORM), and partial oxidation of methane (POM). The results of this research demonstrated that the use of alcohols (methanol, ethanol, and isopropanol) during the preparation of the Ni/CeO2 catalysts by the coprecipitation method, improved their characteristics such as crystallite size (nm), surface area (m2·g−1), and reducib
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27

Mierczynski, Pawel, Natalia Stępińska, Magdalena Mosinska, et al. "Hydrogen Production via the Oxy-Steam Reforming of LNG or Methane on Ni Catalysts." Catalysts 10, no. 3 (2020): 346. http://dx.doi.org/10.3390/catal10030346.

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Ni catalysts supported on ZrO2, 5%CeO2-ZrO2, and 5%La2O3-ZrO2 were prepared via the impregnation method and tested in the oxy-steam reforming of methane and liquified natural gas (LNG). All tested catalysts exhibited high catalytic activity in the studied process at 700 and 900 °C. The improvement of the stability of Ni catalysts after the addition of CeO2 oxide in the studied oxy-steam reforming of LNG process was confirmed. In addition, high activity and selectivity towards hydrogen was proven in the oxy-steam reforming process at 900 °C over a 20%Ni/5%CeO2-ZrO2 catalyst. It was also proved
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28

Gonçalves, Juliana F., and Mariana M. V. M. Souza. "Ni/x%Nb2O5/Al2O3 Catalysts Prepared via Coprecipitation-Wet Impregnation Method for Methane Steam Reforming." Current Catalysis 9, no. 1 (2020): 80–89. http://dx.doi.org/10.2174/2211544708666190423130340.

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Background: Hydrogen has been considered the energy source of the future and one of the processes for its production is the methane steam reforming. The catalyst used industrially is Ni/Al2O3 and the addition of promoter oxides can be an alternative to improve the performance of this catalyst, which suffers from coke formation and sintering. Objective: Evaluate the role of niobia on catalytic activity and stability. Methods: Ni/x%Nb2O5/Al2O3 (x = 5, 10 and 20) catalysts were synthesized via coprecipitation-wet impregnation method and characterized by X-ray fluorescence (XRF), N2 adsorption-des
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Sellam, Djamila, Kahina Ikkour, Sadia Dekkar, Hassiba Messaoudi, Taous Belaid, and Anne Cécile Roger. "CO2 Reforming of Methane over LaNiO3 Perovskite Supported Catalysts: Influence of Silica Support." Bulletin of Chemical Reaction Engineering & Catalysis 14, no. 3 (2019): 568. http://dx.doi.org/10.9767/bcrec.14.3.3472.568-578.

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The study presents the dry reforming of methane using natural Kaolin silica as catalyst support. The silica-supported LaNiO3 perovskite catalysts (20LaNiO3/SiO2 and 40LaNiO3/SiO2) and bulk LaNiO3 catalyst were synthesized by auto-combustion method. The resulting catalysts were characterized by X-ray diffraction (XRD), N2 adsorption - desorption isotherm measurement, scanning electron microscopy (SEM) and temperature-programmed reduction (TPR). After reduction at 700 °C, they were used as catalysts for the reaction of dry reforming of methane into synthesis gas at atmospheric pressure at 800 °C
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30

Azeem, Subhan, Rabya Aslam, and Mahmood Saleem. "Dry Reforming of Methane with Mesoporous Ni/ZrO2 Catalyst." International Journal of Chemical Engineering 2022 (December 16, 2022): 1–13. http://dx.doi.org/10.1155/2022/3139696.

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Dry reforming of methane has exhibited significant environmental benefits as it utilizes two major greenhouse gases (CO2 and CH4) to produce synthesis gas, a major building block for hydrocarbons. This process has gained industrial attention as catalyst deactivation due to coke deposition being a major hindrance. The present study focuses on the dry reforming of methane over Ni-supported mesoporous zirconia support. Ni metal was loaded over in-house synthesized mesoporous zirconia within the 0–15 wt% range using the wet impregnation method. The physicochemical properties of the synthesized cat
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31

Fasolini, Andrea, Silvia Ruggieri, Cristina Femoni, and Francesco Basile. "Highly Active Catalysts Based on the Rh4(CO)12 Cluster Supported on Ce0.5Zr0.5 and Zr Oxides for Low-Temperature Methane Steam Reforming." Catalysts 9, no. 10 (2019): 800. http://dx.doi.org/10.3390/catal9100800.

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Syngas and Hydrogen productions from methane are industrially carried out at high temperatures (900 °C). Nevertheless, low-temperature steam reforming can be an alternative for small-scale plants. In these conditions, the process can also be coupled with systems that increase the overall efficiency such as hydrogen purification with membranes, microreactors or enhanced reforming with CO2 capture. However, at low temperature, in order to get conversion values close to the equilibrium ones, very active catalysts are needed. For this purpose, the Rh4(CO)12 cluster was synthetized and deposited ov
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32

Saad, M. A., N. H. Abdurahman, Rosli Mohd Yunus, Mohammed Kamil, and Omar I. Awad. "An Overview of Reforming Technologies and the Effect of Parameters on the Catalytic Performance of Mesoporous Silica/Alumina Supported Nickel Catalysts for Syngas Production by Methane Dry Reforming." Recent Innovations in Chemical Engineering (Formerly Recent Patents on Chemical Engineering) 13, no. 4 (2020): 303–22. http://dx.doi.org/10.2174/2405520413666200313130420.

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Synthetic gas - a combination of (H2) and (CO) - is an important chemical intermediate for the production of liquid hydrocarbon, olefin, gasoline, and other valuable chemicals. Several reforming methods that use steam, carbon dioxide, and oxygen in the presence of various catalytic systems have been extensively investigated, and this paper reviews the recent research on the state-of-the-art of reforming technologies and the effect of parameters on the catalytic activity of mesoporous silica/alumina supported nickel catalysts for syngas production by methane dry reforming. First, we provide an
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Rakib, Abdelmajid, Cédric Gennequin, Thierry Dhainaut, Sylvain Ringot, Antoine Aboukaïs, and Edmond Abi-Aad. "Promoting Effect of CeO2 Addition on Activity and Catalytic Stability in Steam Reforming of Methane over Ni/Al2O3." Advanced Materials Research 324 (August 2011): 153–56. http://dx.doi.org/10.4028/www.scientific.net/amr.324.153.

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Hydrogen production by steam reforming of methane was studied over Ni catalysts supported on CeO2, Al2O3 and CeO2-Al2O3. These catalysts were prepared using the impregnation method and characterized by XRD. The effect of CeO2 promoter on the catalytic performance of Ni/Al2O3 catalyst for methane steam reforming reaction was investigated. In fact, CeO2 had a positive effect on the catalytic activity in this reaction. Experimental results demonstrated that Ni/CeO2-Al2O3 catalyst showed excellent catalytic activity and high reaction performance. In addition, the effects of reaction temperature an
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34

A. Ibrahim, Ahmed, Ashraf Amin, Ahmed S. Al-Fatesh, et al. "Nanosized Ni/SBA-15 Catalysts for CO2 Reforming of CH4." Applied Sciences 9, no. 9 (2019): 1926. http://dx.doi.org/10.3390/app9091926.

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Ni, Co, and Co–Ni bimetallic catalysts supported over SBA-15 and over SBA-15 doped with Zn or Ce oxides were prepared and tested in a methane dry reforming reaction. The loading of the metals in the catalyst was 5 wt % for either mono or bimetallic catalysts. The prepared catalysts were tested in a continuous-flow fixed-bed reactor at 800 °C under atmospheric pressure. XRD, TPR, TPD, and SEM characterization techniques were employed to investigate the catalytic properties of fresh catalysts. SEM and TGA were used to study the catalytic properties of spent catalysts. A remarkable effect on the
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35

Hossain, M. Anwar, Bamidele Victor Ayodele, Chin Kui Cheng, and Maksudur R. Khan. "Syngas Production from Catalytic CO2 Reforming of CH4 over CaFe2O4 Supported Ni and Co Catalysts: Full Factorial Design Screening." Bulletin of Chemical Reaction Engineering & Catalysis 13, no. 1 (2018): 57. http://dx.doi.org/10.9767/bcrec.13.1.1197.57-73.

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In this study, the potential of dry reforming reaction over CaFe2O4 supported Ni and Co catalysts were investigated. The Co/CaFe2O4 and Ni/CaFe2O4 catalysts were synthesized using wet impregnation method by varying the metal loading from 5-15 %. The synthesized catalysts were tested in methane dry reforming reaction at atmospheric pressure and reaction temperature ranged 700-800 oC. The catalytic performance of the catalysts based on the initial screening is ranked as 5%Co/CaFe2O4 < 10%Co/CaFe2O4 < 5%Ni/CaFe2O4 < 10%Ni/CaFe2O4 according to their performance. The Ni/CaFe2O4 catalyst wa
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36

Singh, Satyapaul A., Yaddanapudi Varun, Priyanka Goyal, I. Sreedhar, and Giridhar Madras. "Feed Effects on Water–Gas Shift Activity of M/Co3O4-ZrO2 (M = Pt, Pd, and Ru) and Potassium Role in Methane Suppression." Catalysts 13, no. 5 (2023): 838. http://dx.doi.org/10.3390/catal13050838.

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Water–gas shift (WGS) is an industrial process to tackle CO abatement and H2 upgradation. The syngas (CO and H2 mixture) obtained from steam or dry reformers often has unreacted (from dry reforming) or undesired (from steam reforming) CO2, which is subsequently sent to downstream WGS reactor for H2 upgradation. Thus, industrial processes must deal with CO2 and H2 in the reformate feed. Achieving high CO2 or H2 selectivities become challenging due to possible CO and CO2 methanation reactions, which further increases the separation costs to produce pure H2. In this study, M/Co3O4-ZrO2 (M = Ru, P
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37

Yang, Hui, Hui Wang, Lisha Wei, et al. "Simple mechanisms of CH4 reforming with CO2 and H2O on a supported Ni/ZrO2 catalyst." Physical Chemistry Chemical Physics 23, no. 46 (2021): 26392–400. http://dx.doi.org/10.1039/d1cp04048k.

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To understand the metal–support interaction of oxide supported transition metal catalysts, we computed the reaction mechanisms of dry and steam reforming of methane on a tetragonal ZrO2(101) supported Ni catalyst.
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38

Fakeeha, A. H., A. S. Al–Fatesh, and A. E. Abasaeed. "Ni/Y- Zeolite Catalysts for Carbon Dioxide Reforming of Methane." Advanced Materials Research 550-553 (July 2012): 325–28. http://dx.doi.org/10.4028/www.scientific.net/amr.550-553.325.

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Carbon deposits play a crucial role in the performance of catalysts, in terms of controlling both reaction selectivity and activity, this is most often manifest through catalyst deactivation. Understanding the structure and electronic properties of the carbon deposits formed on the surface of a catalyst is therefore an importance key. In this study the catalytic performance of Ni based on Y-Zeolite (CBV300) prepared by incipient wetness impregnation. The prepared catalyst was tested in a micro tubular reactor using temperature ranges of 500, 600 and 700 °C at atmospheric pressure, using a tota
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39

Ewbank, Jessica L., Libor Kovarik, Christian C. Kenvin, and Carsten Sievers. "Effect of preparation methods on the performance of Co/Al2O3 catalysts for dry reforming of methane." Green Chem. 16, no. 2 (2014): 885–96. http://dx.doi.org/10.1039/c3gc41782d.

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Co/Al<sub>2</sub>O<sub>3</sub> catalysts were synthesized by dry impregnation and controlled adsorption. The effect of catalyst preparation methods on their performance in methane dry reforming was studied.
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40

Samojeden, Bogdan, Marta Kamienowska, Armando Izquierdo Colorado, et al. "Novel Nickel- and Magnesium-Modified Cenospheres as Catalysts for Dry Reforming of Methane at Moderate Temperatures." Catalysts 9, no. 12 (2019): 1066. http://dx.doi.org/10.3390/catal9121066.

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Cenospheres from coal fly ashes were used as support in the preparation of Ni–Mg catalysts for dry reforming of methane. These materials were characterized by means of XRD, H2-temperature-programmed reduction (H2-TPR), CO2-temperature-programmed desorption (CO2-TPD), and low-temperature nitrogen sorption techniques. The cenosphere-supported catalysts showed relatively high activity and good stability in the dry reforming of methane (DRM) at 700 °C. The catalytic performance of modified cenospheres was found to depend on both Ni and Mg content. The highest activity at 750 °C and 1 atm was obser
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41

Lyu, Linghui, Yunxing Han, Qingxiang Ma, et al. "Fabrication of Ni-Based Bimodal Porous Catalyst for Dry Reforming of Methane." Catalysts 10, no. 10 (2020): 1220. http://dx.doi.org/10.3390/catal10101220.

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Dry reforming of methane (DRM) can effectively convert two greenhouse gases into high-valued chemicals, in which the syngas produced by the reaction can be directly used as raw gases for Fischer–Tropsch synthesis and methanol synthesis. Ni-based catalysts for the DRM reaction with comparable initial activity to noble metals are the focus of most researchers, but their poor carbon deposition resistance easily causes their low stability. More importantly, the nickel loading will affect the catalytic activity and carbon deposition resistance of the catalyst. Herein, a series of Ni/Al2O3 catalysts
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42

Shi, Yu, Shiwei Wang, Yiming Li, et al. "Improving Anti-Coking Properties of Ni/Al2O3 Catalysts via Synergistic Effect of Metallic Nickel and Nickel Phosphides in Dry Methane Reforming." Materials 15, no. 9 (2022): 3044. http://dx.doi.org/10.3390/ma15093044.

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A series of NiP-x/Al2O3 catalysts containing different ratio of metallic nickel to nickel phosphides, prepared by varying Ni/P molar ratio of 4, 3, 2 through a co-impregnation method, were employed to investigate the synergistic effect of metallic nickel-nickel phosphides in dry methane reforming reaction. The Ni/Al2O3 catalyst indicates good activity along with severe carbon deposition. The presence of phosphorus increases nickel dispersion as well as the interaction between nickel and alumina support, which results in smaller nickel particles. The co-existence of metallic nickel and nickel p
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43

Abdelsadek, Z., S. Gonzalez-Cortes, O. Cherifi, D. Halliche, and PJ Masset. "Reduction effect on the catalytic performances of NiAl-SPC takovite catalysts in syngas synthesis process." IOP Conference Series: Earth and Environmental Science 1167, no. 1 (2023): 012031. http://dx.doi.org/10.1088/1755-1315/1167/1/012031.

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Abstract In the downstream of the Oil &amp; Gas industry and decline in oil production, the NiAl-HT derived hydrotalciteis a candidate as catalyst to produce syngas in the methane dry reforming process. Hydrotalcite are lamellar compounds of general formulation[M1-x 2+ Mx 3+ (OH) 2]x+[An-] x/n .m H2Owhere the ionic or cationic character can be tuned by the choice of the metal nature and oxidation degree. NiAl-SPC samples were obtained by coprecipitation at constant alkaline pH, then the product was thermal treated at 450°C for 6h to obtain mixed oxides phases. Samples prior and after calcinati
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44

Yakovenko, R. E., V. B. Ilyin, A. P. Savostyanov, I. N. Zubkov, A. V. Dulnev, and O. A. Semyonov. "Conversion of Liquefied Hydrocarbon Gases on Commercial Nickel Catalysts." Kataliz v promyshlennosti 19, no. 6 (2019): 455–64. http://dx.doi.org/10.18412/1816-0387-2019-6-455-464.

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The two-step conversion of industrial liquefied hydrocarbon gases (LHG) on NIAP-07-01 (NKM-1) and NIAP-03-01 catalysts for the production of hydrogen-containing gases was investigated. The experiments were carried out in flow reactors with a fixed catalyst bed at a pressure of 0.1 MPa under the following conditions: temperature 350–450 °C, gas hourly space velocity (GHSV) 1000–3000 h–1, steam-gas ratio 4 : 1–8 : 1 (pre-reforming); and temperature 700 °C, GHSV 2000 h–1, air-gas ratio 1.2 : 1 (steam-air reforming). Under the studied conditions, the concentrations of components of the converted g
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45

Abiev, Rufat Sh, Dmitry A. Sladkovskiy, Kirill V. Semikin, Dmitry Yu Murzin, and Evgeny V. Rebrov. "Non-Thermal Plasma for Process and Energy Intensification in Dry Reforming of Methane." Catalysts 10, no. 11 (2020): 1358. http://dx.doi.org/10.3390/catal10111358.

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Plasma-assisted dry reforming of methane (DRM) is considered as a potential way to convert natural gas into fuels and chemicals under near ambient temperature and pressure; particularly for distributed processes based on renewable energy. Both catalytic and photocatalytic technologies have been applied for DRM to investigate the CH4 conversion and the energy efficiency of the process. For conventional catalysis; metaldoped Ni-based catalysts are proposed as a leading vector for further development. However; coke deposition leads to fast deactivation of catalysts which limits the catalyst lifet
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46

Lee, Jong-Heon, Seongbin Jo, Tae-Young Kim, et al. "Preparation of Eggshell-Type Ru/Al2O3 Catalysts for Hydrogen Production Using Steam-Methane Reforming on PEMFC." Catalysts 11, no. 8 (2021): 951. http://dx.doi.org/10.3390/catal11080951.

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Ru-based eggshell-type catalysts, in which Ru is located at the outer region of the pellet, were prepared by the impregnation method, using spherically shaped γ-Al2O3 pellets for steam-methane reforming (SMR). Ru was only supported on the external region of the pellet because of the strong interaction between its precursor and the alumina pellet. The Ru precursor penetrated the inside of the pellet by adding nitric acid to the impregnation solution. The distribution and thickness of the Ru layer in the catalyst can be controlled using the HNO3/Ru molar ratio and contact time at the impregnatio
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47

Araújo, L. C. B. de, D. M. de A. Melo, M. A. de F. Melo, et al. "Nickel catalyst supported on magnesium and zinc aluminates (MgAl2O4 and ZnAl2O4) spinels for dry reforming of methane." Cerâmica 63, no. 365 (2017): 77–81. http://dx.doi.org/10.1590/0366-69132017633652056.

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Abstract Materials such as MgAl2O4 and ZnAl2O4 assessed in the reaction of dry reforming of methane to produce syngas were synthesized by microwave-assisted combustion method using urea as fuel. Samples of synthesized oxides were calcined at 800 °C for 2 h and impregnated with 5% nickel. The impregnated samples were calcined at 850 °C for 4 h to obtain the desired phases. The results of the catalytic tests showed that the catalysts are active for the reaction of dry reforming of methane, and the catalyst that showed the best performance for methane conversion was 5% Ni/MgAl2O4 calcined at 850
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48

Wei, Ning, Jia Zhang, Hexiang Zhong, et al. "Methane Steam Reforming Over NiO/CexZryO2-Sil-1 Catalyst Prepared by In-Situ Self-Assembly." Journal of Nanoscience and Nanotechnology 19, no. 11 (2019): 7416–20. http://dx.doi.org/10.1166/jnn.2019.16620.

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NiO/CexZryO2-Sil-1 catalysts were prepared using an In-Situ self-assembly approach by coupling silicalite-1 and CexZryO2. This one-step synthesis method utilized the high surface area and hydrothermal stability of silicalite-1 and the good oxidation-reduction ability of the CexZryO2, and hence offered high synthesis efficiency. The catalyst structure was examined by N2-physisorption, temperature-programmed reduction, transmission electron microscopy, and X-ray diffraction. All the results showed that silicalite-1 was well-encapsulated by NiO/Ce0.5Zr0.5O2. Furthermore, the effect of the Ce/Zr m
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49

Rusdan, Nisa Afiqah, Sharifah Najiha Timmiati, Wan Nor Roslam Wan Isahak, Zahira Yaakob, Kean Long Lim, and Dalilah Khaidar. "Recent Application of Core-Shell Nanostructured Catalysts for CO2 Thermocatalytic Conversion Processes." Nanomaterials 12, no. 21 (2022): 3877. http://dx.doi.org/10.3390/nano12213877.

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Carbon-intensive industries must deem carbon capture, utilization, and storage initiatives to mitigate rising CO2 concentration by 2050. A 45% national reduction in CO2 emissions has been projected by government to realize net zero carbon in 2030. CO2 utilization is the prominent solution to curb not only CO2 but other greenhouse gases, such as methane, on a large scale. For decades, thermocatalytic CO2 conversions into clean fuels and specialty chemicals through catalytic CO2 hydrogenation and CO2 reforming using green hydrogen and pure methane sources have been under scrutiny. However, these
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50

Mundhwa, Mayur, and Christopher P. Thurgood. "Improved performance of a catalytic plate reactor coated with distributed layers of reforming and combustion catalysts for hydrogen production." Reaction Chemistry & Engineering 3, no. 4 (2018): 487–514. http://dx.doi.org/10.1039/c8re00013a.

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