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Artículos de revistas sobre el tema "CO₂ hydrogenation"

Autor: Grafiati

Publicado: 30 de noviembre de 2024

Última modificación: 31 de julio de 2025

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1

Godoy, Sebastian, Prashant Deshlahra, Francisco Villagra-Soza, Alejandro Karelovic, and Romel Jimenez. "Effects of Site Geometry and Local Composition on Hydrogenation of Surface Carbon to Methane on Ni, Co, and NiCo Catalysts." Catalysts 12, no. 11 (2022): 1380. http://dx.doi.org/10.3390/catal12111380.

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Surface carbon deposits deactivate Ni and Co catalysts in reactions involving hydrocarbons and COx. Electronic properties, adsorption energies of H, C, and CHx species, and the energetics of the hydrogenation of surface C atom to methane are studied for (100) and (111) surfaces of monometallic Ni and Co, and bimetallic NiCo. The bimetallic catalyst exhibits a Co→Ni electron donation and a concomitant increase in the magnetization of Co atoms. The CHx species resulting from sequential hydrogenation are more stable on Co than on Ni atoms of the NiCo surfaces due to more favorable (C-H)–Co agosti

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2

Zuo, Zheng, and Xinzheng Yang. "Mechanistic Insights into Selective Hydrogenation of C=C Bonds Catalyzed by CCC Cobalt Pincer Complexes: A DFT Study." Catalysts 11, no. 2 (2021): 168. http://dx.doi.org/10.3390/catal11020168.

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The mechanistic insights into hydrogenations of hex-5-en-2-one, isoprene, and 4-vinylcyclohex-1-ene catalyzed by pincer (MesCCC)Co (Mes = bis(mesityl-benzimidazol-2-ylidene)phenyl) complexes are computationally investigated by using the density functional theory. Different from a previously proposed mechanism with a cobalt dihydrogen complex (MesCCC)Co-H2 as the catalyst, we found that its less stable dihydride isomer, (MesCCC)Co(H)2, is the real catalyst in those catalytic cycles. The generations of final products with H2 cleavages for the formations of C−H bonds are the turnover-limiting ste

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3

Stepanova, Liudmila N., Roman M. Mironenko, Mikhail V. Trenikhin, Aleksandra N. Serkova, Aleksei N. Salanov, and Aleksandr V. Lavrenov. "CoCuMgAl-Mixed-Oxide-Based Catalysts with Fine-Tunable Composition for the Hydrogenation of Furan Compounds." Journal of Composites Science 8, no. 2 (2024): 57. http://dx.doi.org/10.3390/jcs8020057.

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Catalysts based on CoCuMgAl mixed oxides were synthesized and studied in the hydrogenations of furfural and 5-hydroxymethylfurfural under different conditions. The changes in the structural properties of the catalysts at different stages of their preparation were studied using a set of physical methods (XRD, SEM, and TEM). It was shown that the fine regulation of the chemical compositions of the mixed oxides (i.e., changes in the Co/Cu ratio) made it possible to vary the structure, morphology, and catalytic properties of the samples. The phase composition of catalysts with Co/Cu = 1 did not ch

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4

Tanirbergenova Sandugash Kudaibergenovna, Тugelbayeva Dildara Abdikadyrovna, Erezhep Nurzay, Zhylybayeva Nurzhamal Kydyrkhankyzy, and Dinistanova Balaussa Kanatbayevna. "OPTIMIZATION OF TECHNOLOGICAL PARAMETERS OF HYDRAGENERATION PROCESS OF ACETYLENE USING A PILOT CATALYTIC PLANT." SERIES CHEMISTRY AND TECHNOLOGY 5, no. 443 (2020): 134–40. http://dx.doi.org/10.32014/2020.2518-1491.90.

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A pilot plant was launched and the modes of acetylene hydrogenation on cobalt catalysts were worked out. It has been found that the modified 7% Co/ SiAl cobalt catalyst is active in the process of hydrogenating acetylene into ethylene. Optimal conditions of acetylene hydrogenation on 7% Co/ SiAl catalyst were determined. The effects of temperature, space velocity and the ratio of initial components in the hydrogenation of acetylene to ethylene were investigated. The textural characteristics of cobalt catalysts before and after the hydrogenation of acetylene were investigated by the SEM method.

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5

Leroux, Killian, Jean-Claude Guillemin, and Lahouari Krim. "Solid-state formation of CO and H2CO via the CHOCHO + H reaction." Monthly Notices of the Royal Astronomical Society 491, no. 1 (2019): 289–301. http://dx.doi.org/10.1093/mnras/stz3051.

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ABSTRACT Glycolaldehyde (CHOCH2OH) and ethylene glycol (HOCH2CH2OH) are among many complex organic molecules detected in the interstellar medium (ISM). Astrophysical models proposed very often that the formation of these compounds would be directly linked to the hydrogenation of glyoxal (CHOCHO), a potential precursor which is not yet detected in the ISM. We have performed, in this work, surface and bulk hydrogenations of solid CHOCHO under ISM conditions in order to confirm or invalidate the astrophysical modelling of glyoxal transformation. Our results show that the hydrogenation of glyoxal

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6

Stuchlý, Vladimír, and Karel Klusáček. "Temperature-programmed hydrogenation of surface carbonaceous deposits on a Ni/SiO2 methanation catalyst." Collection of Czechoslovak Chemical Communications 55, no. 2 (1990): 354–63. http://dx.doi.org/10.1135/cccc19900354.

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Hydrogenation of surface carbonaceous deposits from CO disproportionation or methanation on a high-weight loading commercial Ni/SiO2 catalyst was investigated by temperature-programmed surface reaction (TPSR). Two types of surface carbon (Cα and Cβ)were hydrogenated following the CO disproportionation. Adsorbed carbon monoxide was probably hydrogenated after CO methanation. Hydrogenation of Cα proceeded substantially faster than hydrogenation of Cβ and faster than hydrogenation of preadsorbed CO. Significantly lower activation energy was estimated for hydrogenation of Cα than for hydrogenation

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7

Li, Meng, and Dong Ding. "(Invited) Tuning Selective CO₂ Electrohydrogenation Under Mid Temperature and Pressure." ECS Meeting Abstracts MA2024-01, no. 37 (2024): 2184. http://dx.doi.org/10.1149/ma2024-01372184mtgabs.

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To address rising environmental concerns and energy challenges, it is highly desirable to develop green technologies for a sustainable future. Hydrogenation reactions are essential processes in the chemical industry, giving access to a variety of valuable compounds. Electrochemical CO2 hydrogenation using renewable electricity is considered one of the most promising pathways to reach the environmental economics. Among various electrochemical devices, a solid state electrolyzer working at intermediate temperatures has the advantages of high reaction rates and low overpotentials. As CO2 molecule

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8

Su, Diefeng, Zhongzhe Wei, Shanjun Mao, et al. "Reactivity and mechanism investigation of selective hydrogenation of 2,3,5-trimethylbenzoquinone on in situ generated metallic cobalt." Catalysis Science & Technology 6, no. 12 (2016): 4503–10. http://dx.doi.org/10.1039/c5cy02171e.

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We successfully developed Co-based catalysts for efficient and selective hydrogenation of TMBQ. Metallic Co was proved to be responsible for TMBQ hydrogenation. The hydrogenation process was also investigated by DFT calculation.

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9

Abasov, S. I., S. B. Agaeva, M. T. Mamedova, Y. S. Isaeva, A. A. Iskenderova, and D. B. Tagiyev. "EFFECT OF AN ALKYL SUBSTITUTE ON HYDROCONVERSION OF INDIVIDUAL AROMATIC HYDROCARBONS ON Co/HZSM-5/SO42-–ZrO2 COMPOSITE CATALYST." Azerbaijan Chemical Journal, no. 2 (May 7, 2024): 36–43. http://dx.doi.org/10.32737/0005-2531-2024-2-36-43.

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A systematic study of the hydrogenation of individual aromatic hydrocarbons (benzene, toluene, xylene) and their mixtures was carried out at 1800C, H2/Ar=7, WHSV = 2h-1 and atmospheric pressure on a composite catalyst 0.4%Co/HZSM-5/SO42-(2.0%)–ZrO2. It has been established that the developed catalyst has a high hydrogenating ability with respect to aromatic hydrocarbons at low hydrogen pressures. Alkyl-substituted benzenes turned out to be more active. It was found that alkyl substituents increase the activity of hydrogenation of the benzene ring of an aromatic hydrocarbon. According to their

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10

Kongsuebchart, Wilasinee, Apipon Methachittipan, Thatpon Kongviwatanakul, Piyasan Praserthdam, Okorn Mekasuwandumrong, and Joongjai Panpranot. "Solvothermal-Derived Nanocrystalline TiO₂ Supported Co Catalysts in the Hydrogenation of Carbonmonoxide." Advanced Materials Research 634-638 (January 2013): 595–98. http://dx.doi.org/10.4028/www.scientific.net/amr.634-638.595.

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Nanocrystalline TiO2 with the average crystallite sizes of 9 and 18 nm were synthesized by the solvothermal method and employed as supports for preparation of Co/TiO2 catalysts for CO hydrogenation reaction with various Co loadings between 5-20 wt%. For a similar Co loading, the use of larger crystallite size TiO2 resulted in higher higher CO hydrogenation activities with no influences on the product selectivities. However, an optimum amount of cobalt loading that maximized CO hydrogenation activity of Co/TiO2 was determined to be at ca. 15 wt.% for both TiO2 crystallite sizes.

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11

Yang, Kaixuan, Naimeng Chen, Xiaomiao Guo, et al. "Phase-Controlled Cobalt Catalyst Boosting Hydrogenation of 5-Hydroxymethylfurfural to 2,5-Dimethylfuran." Molecules 28, no. 13 (2023): 4918. http://dx.doi.org/10.3390/molecules28134918.

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The search for non-noble metal catalysts for chemical transformations is of paramount importance. In this study, an efficient non-noble metal catalyst for hydrogenation, hexagonal close-packed cobalt (HCP-Co), was synthesized through a simple one-step reduction of β-Co(OH)2 nanosheets via a temperature-induced phase transition. The obtained HCP-Co exhibited several-times-higher catalytic efficiency than its face-centered cubic cobalt (FCC-Co) counterpart in the hydrogenation of the C=C/C=O group, especially for the 5-hydroxymethylfurfural (HMF) hydrogenation (8.5-fold enhancement). Density fun

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12

Endo, Yasushi, Takanobu Sato, Tadashi Kaneko, Yoshio Kawamura, and Masahiko Yamamoto. "Change of Interlayer Exchange Coupling between the Adjacent Magnetic Transition Metal Layers across a Rare-Earth Metal Layer by Hydrogenation." Materials Science Forum 512 (April 2006): 177–82. http://dx.doi.org/10.4028/www.scientific.net/msf.512.177.

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We have studied the change of the interlayer exchange coupling between the adjacent magnetic transition metal (TM) layers across a rare-earth metal (REM) layer by hydrogenation in TM (10 nm)/REM (t nm)/TM (10 nm) trilayers composed of Fe and Co as the TM and Y as the REM. In the case of the Fe as TM, the magnetic properties are sensitive to hydrogenation. In particular, the interlayer exchange coupling changes remarkably by hydrogenation. On the other hand, in the case of the Co as TM, the magnetic properties do not change by hydrogenation, and the change of the coupling by hydrogenation canno

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13

Tsai, Yu-Tung, Xunhua Mo, Andrew Campos, James G. Goodwin, and James J. Spivey. "Hydrotalcite supported Co catalysts for CO hydrogenation." Applied Catalysis A: General 396, no. 1-2 (2011): 91–100. http://dx.doi.org/10.1016/j.apcata.2011.01.043.

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14

Priyadarshani, Nilusha, Bojana Ginovska, J. Timothy Bays, John C. Linehan, and Wendy J. Shaw. "Photoswitching a molecular catalyst to regulate CO2 hydrogenation." Dalton Transactions 44, no. 33 (2015): 14854–64. http://dx.doi.org/10.1039/c5dt01649e.

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15

Dou, Maobin, Minhua Zhang, Yifei Chen, and Yingzhe Yu. "DFT study of In2O3-catalyzed methanol synthesis from CO2 and CO hydrogenation on the defective site." New Journal of Chemistry 42, no. 5 (2018): 3293–300. http://dx.doi.org/10.1039/c7nj04273f.

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16

Ngoc Ha, Nguyen, Nguyen Thi Thu Ha, Nguyen Binh Long, and Le Minh Cam. "Conversion of Carbon Monoxide into Methanol on Alumina-Supported Cobalt Catalyst: Role of the Support and Reaction Mechanism—A Theoretical Study." Catalysts 9, no. 1 (2018): 6. http://dx.doi.org/10.3390/catal9010006.

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Density functional theory (DFT) was used to calculate the step-by-step hydrogenation of carbon monoxide (CO) to form methanol over a Co4 cluster/Al2O3 surface. A three-dimensional Co4 tetrahedral structure was selected to explore its interaction with the supporting Al2O3 (104) surface. Co4 chemically reacted with Al2O3 to form a new chemical system. The calculated results show that Al2O3 support has strengthened the Co4 catalyst during the reaction since the formation of the Co–O bond. Loading Co4 on the Al2O3 surface increases CO adsorption ability but decreases the dissociation ability of C–

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17

Qin, Ruixuan, Pei Wang, Pengxin Liu, et al. "Carbon Monoxide Promotes the Catalytic Hydrogenation on Metal Cluster Catalysts." Research 2020 (July 17, 2020): 1–9. http://dx.doi.org/10.34133/2020/4172794.

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Size effect plays a crucial role in catalytic hydrogenation. The highly dispersed ultrasmall clusters with a limited number of metal atoms are one candidate of the next generation catalysts that bridge the single-atom metal catalysts and metal nanoparticles. However, for the unfavorable electronic property and their interaction with the substrates, they usually exhibit sluggish activity. Taking advantage of the small size, their catalytic property would be mediated by surface binding species. The combination of metal cluster coordination chemistry brings new opportunity. CO poisoning is notori

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18

Tang, Qing Jie, Wen Rong Wu, Shao Fan, and Bo Liu. "Effect of Ruthenium on the Performance of Iron-Based Catalyst for CO Hydrogenation." Advanced Materials Research 228-229 (April 2011): 496–99. http://dx.doi.org/10.4028/www.scientific.net/amr.228-229.496.

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A series of Iron-based complex catalyst were prepared by precipitation and immersion in order to study the effect of Ruthenium on the performance of Iron-based catalyst for CO hydrogenation in FTS. The distribution of products was studied for CO hydrogenation, and the reduction action of Iron-ruthenium complex catalyst was study by TPR. The results showed that the yield of the lower hydrocarbons in the products of CO-hydrogenation could be improved obviously with Ruthenium added, and the reduction action of Iron-based catalyst could be promoted obviously.

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19

Heltzel, Jacob M., Matthew Finn, Diana Ainembabazi, Kai Wang, and Adelina M. Voutchkova-Kostal. "Transfer hydrogenation of carbon dioxide and bicarbonate from glycerol under aqueous conditions." Chemical Communications 54, no. 48 (2018): 6184–87. http://dx.doi.org/10.1039/c8cc03157f.

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Catalytic transfer hydrogenation of CO<sub>2</sub> from glycerol to afford formic and lactic acid is an attractive path to valorizing two waste streams. The process is significantly more thermodynamically favorable than direct CO<sub>2</sub> hydrogenation.

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20

Guo, Haijun, Hairong Zhang, Weichao Tang, et al. "Furfural hydrogenation over amorphous alloy catalysts prepared by different reducing agents." BioResources 12, no. 4 (2017): 8755–74. http://dx.doi.org/10.15376/biores.12.4.8755-8774.

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The catalytic hydrogenation of furfural was studied over a series of Ni-B, Co-B, and Ni-Co-B amorphous alloy catalysts that were prepared by the chemical reduction method using KBH4 and NaBH4 as reducing agents. These catalysts were characterized by N2 adsorption/desorption, XRD, XPS, FE-SEM, and TEM. The results showed that NaBH4 had a much stronger reduction ability to enhance the surface concentration of the metallic active sites for furfural hydrogenation and electron transfer capability, leading to much higher hydrogenation activity. In the Ni-Co-B amorphous alloy catalyst, the equilibriu

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21

Jang, Chol Ryong, Vasile Matei, Anca Borcea, Viorel Voicu, Raluca Proscanu, and Dragos Ciuparu. "Hydrogenation of 1-octene by Co-Mo/MCM-41 catalysts." Analele Universitatii "Ovidius" Constanta - Seria Chimie 23, no. 2 (2012): 133–36. http://dx.doi.org/10.2478/v10310-012-0022-5.

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AbstractThe synthesis and characterization of MCM-41 supported Co-Mo catalysts and catalytic hydrogenation of 1-octene to n-octane were discussed. BET specific surface area of MCM-41, calculated from N2 adsorption/desorption isotherm, was 1690 m2/g. The XRD patterns of the Co-Mo/MCM-41 catalysts show that metal species are finely dispersed and the size of CoO and MoO3 particles is below the detection limit by XRD. The 1-octene hydrogenation activity of the catalysts decreased with increasing the Co content up to 9 wt.% for the Co-promoted Co-Mo/MCM-41 catalysts with a MoO3 content of 12 wt.%.

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22

Fu, Huan, Huan Zhang, Guichun Yang, et al. "Highly dispersed rhodium atoms supported on defect-rich Co(OH)₂ for the chemoselective hydrogenation of nitroarenes." New Journal of Chemistry 46, no. 3 (2022): 1158–67. http://dx.doi.org/10.1039/d1nj04936d.

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0.54% Rh/Co(OH)2 exhibited 100% selectivity for –NO2 hydrogenation at >96% conversion for nitroarene hydrogenation. Its excellent catalytic performance is due to the interfacial effect of Rh–Co(OH)2 and Rh in the form of single atoms and nanoclusters.

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23

Long, Jilan, Ying Zhou, and Yingwei Li. "Transfer hydrogenation of unsaturated bonds in the absence of base additives catalyzed by a cobalt-based heterogeneous catalyst." Chemical Communications 51, no. 12 (2015): 2331–34. http://dx.doi.org/10.1039/c4cc08946d.

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A novel non-noble Co@C–N system for catalytic transfer hydrogenation reactions is developed. The heterogeneous Co@C–N catalysts are highly active and selective in the hydrogenation of a variety of unsaturated bonds with isopropanol in the absence of base additives.

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24

Li, Xiuping, Jiaqi Wang, Bolin Yin, et al. "Plasmonic Cu-supported amorphous RuP for efficient photothermal CO₂ hydrogenation to CO." RSC Advances 15, no. 3 (2025): 1658–64. https://doi.org/10.1039/d4ra07361d.

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25

Amann, Peter, Bernhard Klötzer, David Degerman, et al. "The state of zinc in methanol synthesis over a Zn/ZnO/Cu(211) model catalyst." Science 376, no. 6593 (2022): 603–8. http://dx.doi.org/10.1126/science.abj7747.

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The active chemical state of zinc (Zn) in a zinc-copper (Zn-Cu) catalyst during carbon dioxide/carbon monoxide (CO 2 /CO) hydrogenation has been debated to be Zn oxide (ZnO) nanoparticles, metallic Zn, or a Zn-Cu surface alloy. We used x-ray photoelectron spectroscopy at 180 to 500 millibar to probe the nature of Zn and reaction intermediates during CO 2 /CO hydrogenation over Zn/ZnO/Cu(211), where the temperature is sufficiently high for the reaction to rapidly turn over, thus creating an almost adsorbate-free surface. Tuning of the grazing incidence angle makes it possible to achieve either

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26

Vahrenkamp, Heinrich. "Hydrierungen und Dehydrierungen im System Benzonitril/Ru3 (CO)12 /Benzylamin / Hydrogenations and Dehydrogenations in the System Benzonitrile/Ru3 (CO)12 /Benzylamine." Zeitschrift für Naturforschung B 43, no. 6 (1988): 643–47. http://dx.doi.org/10.1515/znb-1988-0601.

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The stepwise interconversions between benzonitrile and benzylamine have been realized in both directions via Ru3 cluster intermediates. The hydrogenation/dehydrogenation system can be entered from Ph-CN, Ru3(CO)12, and H2 yielding HRu3(CO)10(NCHPh) or from PhCH2NH2 and Ru3(CO)12 yielding HRu3(CO)10(NHCH2Ph), These two clusters can be interconverted by thermal hydrogenation and dehydrogenation, with H2Ru3(CO)9(NCH2Ph) as a CO and H2 dependent intermediate. The system can be left only towards benzylamine which is formed in small yields from HRu3(CO)10(NHCH2Ph) at high temperatures and under hig

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27

Kobzar, Elena O., Liudmila N. Stepanova, Aleksandr A. Nepomniashchii, et al. "CuCoMgAlOx Mixed Oxides as Selective Catalysts for the Hydrogenation of Furan Compounds." Hydrogen 4, no. 3 (2023): 644–57. http://dx.doi.org/10.3390/hydrogen4030041.

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Single phase CuCoMgAl-layered hydroxides were obtained by making fine adjustment to their composition through changing the (Co + Cu)/Mg = 0.5; 1; 2; 3 and Co/Cu = 0.5; 1; 2 ratios. The rise of Co/Cu in systems contributed to the increase in their thermal stability. CuCoMgAl-catalysts showed high selectivity of carbonyl group hydrogenation in furfural and 5-hydroxymethylfurfural. In furfural hydrogenation, the selectivity to furfuryl alcohol was more than 99%, and in 5-hydroxymethylfurfural hydrogenation, the selectivity to 2,5-hydroxymethyl furfural was 95%. The surface of the samples with dif

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28

Xu, You Min, Ya Dong Bi, and Xiao Hong Yin. "Liquid Phase Hydrogenation of Maleic Anhydride over Ni Catalysts: Effect of Support on the Catalytic Performance." Advanced Materials Research 1033-1034 (October 2014): 57–60. http://dx.doi.org/10.4028/www.scientific.net/amr.1033-1034.57.

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Ni catalysts supported on CeO2 and HZSM-5 supports were prepared and tested as catalysts in the liquid hydrogenation of maleic anhydride. Particularly Ni/HZSM-5 was active and selective in the hydrogenation of maleic anhydride to ڃ-butyrolactone. The characterization results of X-ray diffraction (XRD), N2 adsorption and CO temperature programmed reduction (CO-TPR) evidenced that the higher C=O hydrogenation ability of Ni/HZSM-5 catalyst was related to strong interaction between Ni particles and HZSM-5, and the high dispersion of fine Ni particles on the surface of support. Further, the acidic

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29

Breton, Sylvie, Anne Brisach-Wittmeyer, José Julian Rios Martín, Manuel León Camacho, Andrzej Lasia, and Hugues Ménard. "Selective Electrocatalytic Hydrogenation of Linolenic Acid onPd/Al2O3andPd-Co/Al2O3Catalysts." International Journal of Electrochemistry 2011 (2011): 1–9. http://dx.doi.org/10.4061/2011/485194.

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Electrochemical hydrogenation of linolenic acid as a model for polyunsaturated acids was studied on Pd and Pd/Al2O3catalysts in acidic and alkaline media. The results are presented in terms of number of double bonds in the polyunsaturated fatty acid and interpreted in terms of the adsorption capacity of the catalysts in these media. The highest hydrogenation yield was obtained with Pd/Al2O3at pH 13, in good correlation with the adsorption power of linolenic acid and its first hydrogenation product, linoleic acid, measured in this solution. A preliminary electrochemical hydrogenation study was

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30

Scharnagl, Florian Korbinian, Maximilian Franz Hertrich, Francesco Ferretti, et al. "Hydrogenation of terminal and internal olefins using a biowaste-derived heterogeneous cobalt catalyst." Science Advances 4, no. 9 (2018): eaau1248. http://dx.doi.org/10.1126/sciadv.aau1248.

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Hydrogenation of olefins is achieved using biowaste-derived cobalt chitosan catalysts. Characterization of the optimal Co@Chitosan-700 by STEM (scanning transmission electron microscopy), EELS (electron energy loss spectroscopy), PXRD (powder x-ray diffraction), and elemental analysis revealed the formation of a distinctive magnetic composite material with high metallic Co content. The general performance of this catalyst is demonstrated in the hydrogenation of 50 olefins including terminal, internal, and functionalized derivatives, as well as renewables. Using this nonnoble metal composite, h

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31

Novodárszki, Gyula, Ferenc Lónyi, Magdolna R. Mihályi, et al. "Reaction Pathways of Gamma-Valerolactone Hydroconversion over Co/SiO2 Catalyst." Catalysts 13, no. 7 (2023): 1144. http://dx.doi.org/10.3390/catal13071144.

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The hydroconversion of γ-valerolactone (GVL) over Co/SiO2 catalyst proceeds in a complex reaction network, resulting in 2-methyltetrahydrofuran (2-MTHF) as the main product, and C4–C5 alcohol and alkane side-products. The catalyst was shown to contain Co0 sites and Lewis acid (Co2+ ion)/Lewis base (O2− ion) pair sites, active for hydrogenation/dehydrogenation and dehydration reactions, respectively. The initial reaction step was confirmed to be the hydrogenation of GVL to key intermediate 1,4-pentanediol (1,4-PD). Cyclodehydration of 1,4-PD led to the main product 2-MTHF, whereas its dehydrati

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32

He, Jiao, Mart Simons, Gleb Fedoseev, et al. "Methoxymethanol formation starting from CO hydrogenation." Astronomy & Astrophysics 659 (March 2022): A65. http://dx.doi.org/10.1051/0004-6361/202142414.

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Context. Methoxymethanol (CH3OCH2OH) has been identified through gas-phase signatures in both high- and low-mass star-forming regions. Like several other C-, O-, and H-containing complex organic molecules (COMs), this molecule is expected to form upon hydrogen addition and abstraction reactions in CO-rich ice through radical recombination of CO hydrogenation products. Aims. The goal of this work is to experimentally and theoretically investigate the most likely solid-state methoxymethanol reaction channel – the recombination of CH2OH and CH3O radicals – for dark interstellar cloud conditions a

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33

Vasiliades, Michalis A., Konstantina K. Kyprianou, Nilenindran S. Govender, et al. "The Effect of CO Partial Pressure on Important Kinetic Parameters of Methanation Reaction on Co-Based FTS Catalyst Studied by SSITKA-MS and Operando DRIFTS-MS Techniques." Catalysts 10, no. 5 (2020): 583. http://dx.doi.org/10.3390/catal10050583.

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A 20 wt% Co-0.05 wt% Pt/γ-Al2O3 catalyst was investigated to obtain a fundamental understanding of the effect of CO partial pressure (constant H2 partial pressure) on important kinetic parameters of the methanation reaction (x vol% CO/25 vol% H2, x = 3, 5 and 7) by performing advanced transient isotopic and operando diffuse reflectance infrared Fourier transform spectroscopy–mass spectrometry (DRIFTS-MS) experiments. Steady State Isotopic Transient Kinetic Analysis (SSITKA) experiments conducted at 1.2 bar, 230 °C after 5 h in CO/H2 revealed that the surface coverages, θCO and θCHx and the mea

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34

He, Zhenhong, Qingli Qian, Zhaofu Zhang, et al. "Synthesis of higher alcohols from CO 2 hydrogenation over a PtRu/Fe 2 O 3 catalyst under supercritical condition." Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 373, no. 2057 (2015): 20150006. http://dx.doi.org/10.1098/rsta.2015.0006.

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Hydrogenation of CO 2 to alcohols is of great importance, especially when producing higher alcohols. In this work, we synthesized heterogeneous PtRu/Fe 2 O 3 , in which the Pt and Ru bimetallic catalysts were supported on Fe 2 O 3 . The catalyst was used to catalyse CO 2 hydrogenation to alcohols. It was demonstrated that the activity and selectivity could be tuned by the bimetallic composition, and the catalyst with a Pt to Ru molar ratio of 1:2 (Pt 1 Ru 2 /Fe 2 O 3 ) had high activity and selectivity at 200°C, which is very low for heterogeneous hydrogenation of CO 2 to produce higher alcoho

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35

Sapag, K., S. Rojas, M. López Granados, J. L. G. Fierro, and S. Mendioroz. "CO hydrogenation with Co catalyst supported on porous media." Journal of Molecular Catalysis A: Chemical 167, no. 1-2 (2001): 81–89. http://dx.doi.org/10.1016/s1381-1169(00)00494-5.

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36

Panpranot, J. "CO Hydrogenation on Ru-Promoted Co/MCM-41 Catalysts." Journal of Catalysis 211, no. 2 (2002): 530–39. http://dx.doi.org/10.1016/s0021-9517(02)93761-9.

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37

Mendes, F. M. T., C. A. C. Perez, F. B. Noronha, and M. Schmal. "TPSR of CO hydrogenation on Co/Nb2O5/Al2O3 catalysts." Catalysis Today 101, no. 1 (2005): 45–50. http://dx.doi.org/10.1016/j.cattod.2004.12.009.

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38

Athariboroujeny, Motahare, Andrew Raub, Viacheslav Iablokov, Sergey Chenakin, Libor Kovarik, and Norbert Kruse. "Competing Mechanisms in CO Hydrogenation over Co-MnOx Catalysts." ACS Catalysis 9, no. 6 (2019): 5603–12. http://dx.doi.org/10.1021/acscatal.9b00967.

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39

Panpranot, Joongjai, James G. Goodwin Jr., and Abdelhamid Sayari. "CO Hydrogenation on Ru-Promoted Co/MCM-41 Catalysts." Journal of Catalysis 211, no. 2 (2002): 530–39. http://dx.doi.org/10.1006/jcat.2002.3761.

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40

Haddad, George J., Bin Chen, and James G. Goodwin, Jr. "Effect of La3+Promotion of Co/SiO2on CO Hydrogenation." Journal of Catalysis 161, no. 1 (1996): 274–81. http://dx.doi.org/10.1006/jcat.1996.0185.

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41

Christensen, Jakob M., Andrew J. Medford, Felix Studt, and Anker D. Jensen. "High Pressure CO Hydrogenation Over Bimetallic Pt–Co Catalysts." Catalysis Letters 144, no. 5 (2014): 777–82. http://dx.doi.org/10.1007/s10562-014-1220-x.

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42

Liu, He, Shiguang Fan, Xu Gong, et al. "Partial Hydrogenation of Anthracene with In Situ Hydrogen Produced from Water-Gas Shift Reaction over Fe-Based Catalysts." Catalysts 10, no. 12 (2020): 1379. http://dx.doi.org/10.3390/catal10121379.

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Partial hydrogenation of anthracene under CO-H2O, N2-H2O, and H2-H2O over Fe-based catalysts was studied at 400 °C and 10 MPa. Results show that the Fe-based catalysts display obvious catalytic activity for anthracene hydrogenation under CO-H2O instead of hydrogenation under N2-H2O and H2-H2O. The activity follows in the order of Fe(NO3)3·9H2O > Fe naphthenate > FeSO4·7H2O. Even though the amount of molecular hydrogen remains higher than that of in situ hydrogen, the anthracene conversion with in situ hydrogen is remarkably higher. It demonstrates that the in situ hydrogen is more active

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43

Du, Chang Hai, Yong Zhao, and De Sun. "A Co-Promoted Ni-B Amorphous Nanoalloy Catalyst for Liquid Phase Hydrogenation of Furfural to Furfural Alcohol." Advanced Materials Research 183-185 (January 2011): 2322–26. http://dx.doi.org/10.4028/www.scientific.net/amr.183-185.2322.

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The Co-promoted Ni-B amorphous nanoalloy catalysts were prepared by the chemical reduction of the aqueous solution containing nickel acetate and cobalt acetate with NaBH4 at room temperature and characterized by BET, XRD and DSC. They were used as catalysts for the liquid phase hydrogenation of furfural to furfural alcohol in alcohol at 353 K under 2.0 MPa of hydrogen. Ni-Co-B catalyst was characterized by XRD as amorphous structure. It was active in the hydrogenation of furfural, and it was significantly more active than Ni-B and Co-B. The optimal Co/ ( Co+Ni ) mole ratio in Ni-Co-B was 0.5.

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44

Lee, Younghyun, Sung Woo Lee, Hyung Ju Kim, Yong Tae Kim, Kun-Yi Andrew Lin, and Jechan Lee. "Hydrogenation of Adiponitrile to Hexamethylenediamine over Raney Ni and Co Catalysts." Applied Sciences 10, no. 21 (2020): 7506. http://dx.doi.org/10.3390/app10217506.

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Hexamethylenediamine (HMDA), a chemical for producing nylon, was produced on Raney Ni and Raney Co catalysts via the hydrogenation of adiponitrile (ADN). HMDA was hydrogenated from ADN via 6-aminohexanenitrile (AHN). For the two catalysts, the effects of five different reaction parameters (reaction temperature, H2 pressure, catalyst loading, and ADN/HMDA ratio in the reactant) on the hydrogenation of ADN were investigated. Similar general trends demonstrating the dependence of ADN hydrogenation on the reaction conditions for both catalysts were observed: higher temperature (60–80 °C) and H2 pr

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45

Popandopulo, M. V., M. I. Ivantsov, M. V. Kulikova, and F. G. Zhagfarov. "Hydrogenation of Carbon Monoxide on Composite Catalytic Systems Based on Nickel and Polyvinyl Alcohol." Chemistry and Technology of Fuels and Oils 629, no. 1 (2022): 29–33. http://dx.doi.org/10.32935/0023-1169-2022-629-1-29-33.

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The article considers the catalytic and physico-chemical properties of composite materials obtained by heat treatment of nickel nitrate immobilized on polyvinyl alcohol. The influence of the composite formation temperature on the phase composition of metal-containing and the particle size is studied. It is shown that the resulting composite material is an active catalyst for the hydrogenation of carbon monoxide without a pre-activation stage. The following synthesis parameters were achieved: the degree of carbon monoxide conversion under the conditions of CO catalytic hydrogenation process: CO

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46

Chung, S. R., K. W. Wang, and T. P. Perng. "Electrochemical Hydrogenation of Crystalline Co Powder." Journal of The Electrochemical Society 153, no. 6 (2006): A1128. http://dx.doi.org/10.1149/1.2189978.

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47

Agnelli, M., H. M. Swaan, C. Marquez-Alvarez, G. A. Martin, and C. Mirodatos. "CO Hydrogenation on a Nickel Catalyst." Journal of Catalysis 175, no. 1 (1998): 117–28. http://dx.doi.org/10.1006/jcat.1998.1978.

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48

Agnelli, M., M. Kolb, and C. Mirodatos. "Co Hydrogenation on a Nickel Catalyst ." Journal of Catalysis 148, no. 1 (1994): 9–21. http://dx.doi.org/10.1006/jcat.1994.1180.

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49

Bowker, Michael. "Methanol Synthesis from CO 2 Hydrogenation." ChemCatChem 11, no. 17 (2019): 4238–46. http://dx.doi.org/10.1002/cctc.201900401.

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50

Simakova, I. L. "Prospects of Application of Spent Autocatalysts: Rh Catalysts for Processing of Renewable Citral." Ecology and Industry of Russia 28, no. 12 (2024): 45–51. https://doi.org/10.18412/1816-0395-2024-12-45-51.

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Data on the activity of model bimetallic catalysts 1%Rh5%Co/ZrO2, 1%Rh5%Cu/ZrO2 and 1%Rh1.5% MnOx/SiO2 in the hydrogenation of renewable citral under mild conditions (70 °C, 10 atm gauge H2) have been obtained. It is shown that the citral hydrogenation rate increases in the series RhCu/ZrO2 < RhMnOx/SiO2 < RhCo/ZrO2, reaching selectivity to citronellal of 70, 78 and 84 %, respectively, at citral conversion of 46 %. It is hypothesized that the presence of impurities of Co, Cu, Mn, silicon oxide and reduced oxides will not affect the hydrogenation activity of Rh in spent autocatalysts.

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