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Journal articles on the topic 'Reaction of catalytic CO oxidation'

Author: Grafiati

Published: 28 June 2021

Last updated: 29 July 2025

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1

Zhou, Xue-Fei, and Jing Liu. "Co(salen) catalysed oxidation of synthetic lignin-like polymer: Co(salen) effects." Chemical Industry 66, no. 5 (2012): 685–92. http://dx.doi.org/10.2298/hemind120124031z.

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In this paper, Co(salen) [salen = N, N?-bis(salicylidene)ethylenediamine] complex was studied as oxygen activators for the catalytic oxidation of a lignin model polymer using water as the solvent, with molecular oxygen and hydrogen peroxide as the oxidants. The effect of Co(salen) on oxidation was tested by spectroscopic methods (FTIR, 13C-NMR and GC-MS). The reactions catalysed by Co(salen) included C?-alcohol oxidation, C?-C? side chain cleavage, demethoxylation, aromatic ring cleavage, and ?-O-4 cleavage. In addition to the mechanistic information obtained, the effect of Co(salen) suggests

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2

Mishchenko, Denis D., Zakhar S. Vinokurov, Tatyana N. Afonasenko та ін. "Insights into the Contribution of Oxidation-Reduction Pretreatment for Mn0.2Zr0.8O2−δ Catalyst of CO Oxidation Reaction". Materials 16, № 9 (2023): 3508. http://dx.doi.org/10.3390/ma16093508.

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A Mn0.2Zr0.8O2−δ mixed oxide catalyst was synthesized via the co-precipitation method and studied in a CO oxidation reaction after different redox pretreatments. The surface and structural properties of the catalyst were studied before and after the pretreatment using XRD, XANES, XPS, and TEM techniques. Operando XRD was used to monitor the changes in the crystal structure under pretreatment and reaction conditions. The catalytic properties were found to depend on the activation procedure: reducing the CO atmosphere at 400–600 °C and the reaction mixture (O2 excess) or oxidative O2 atmosphere

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3

Dosa, Melodj, Miguel Jose Marin-Figueredo, Enrico Sartoretti, et al. "Cerium-Copper Oxides Synthesized in a Multi-Inlet Vortex Reactor as Effective Nanocatalysts for CO and Ethene Oxidation Reactions." Catalysts 12, no. 4 (2022): 364. http://dx.doi.org/10.3390/catal12040364.

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In this study, a set of CuCeOx catalysts was prepared via the coprecipitation method using a Multi-Inlet Vortex Reactor: the Cu wt.% content is 5, 10, 20, 30 and 60. Moreover, pure CeO2 and CuO were synthesized for comparison purposes. The physico-chemical properties of this set of samples were investigated by complementary techniques, e.g., XRD, N2 physisorption at −196 °C, Scanning Electron Microscopy, XPS, FT-IR, Raman spectroscopy and H2-TPR. Then, the CuCeOx catalysts were tested for the CO and ethene oxidation reactions. As a whole, all the prepared samples presented good catalytic perfo

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4

Répécaud, Pierre-Alexis, Monica Ceretti, Mimoun Aouine, et al. "Brownmillerites CaFeO2.5 and SrFeO2.5 as Catalyst Support for CO Oxidation." Molecules 26, no. 21 (2021): 6413. http://dx.doi.org/10.3390/molecules26216413.

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The support material can play an important role in oxidation catalysis, notably for CO oxidation. Here, we study two materials of the Brownmillerite family, CaFeO2.5 and SrFeO2.5, as one example of a stoichiometric phase (CaFeO2.5, CFO) and one existing in different modifications (SrFeO2.75, SrFeO2.875 and SrFeO3, SFO). The two materials are synthesized using two synthesis methods, one bottom-up approach via a complexation route and one top-down method (electric arc fusion), allowing to study the impact of the specific surface area on the oxygen mobility and catalytic performance. CO oxidation

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5

Oleksenko, Lyudmila, George Fedorenko, Igor Matushko, Nelly Maksymovych, and Inna Vasylenko. "Perspectives for usage of adsorption semiconductor sensors based on Pd/SnO2 in environmental monitoring of carbon monoxide and methane emission." E3S Web of Conferences 280 (2021): 06003. http://dx.doi.org/10.1051/e3sconf/202128006003.

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Nanosized semiconductor sensor materials based on SnO2 with different palladium contents were obtained via zol-gel technology with the use of ethylene glycol and hydrate of tin (VI) chloride as precursors. Morphology and phase composition of nanosized sensor materials were studied by X-ray diffraction and TEM methods. Catalytic activities of the Pd/SnO2 nanomaterials in the reaction of H2 and CO oxidation were investigated. Adsorption semiconductor sensors based on Pd/SnO2 nanomaterials were made by their calcination up to 620 0C in air and the sensors were found to be highly sensitive to pres

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6

Al Soubaihi, Rola Mohammad, Khaled Mohammad Saoud, Myo Tay Zar Myint, Mats A. Göthelid, and Joydeep Dutta. "CO Oxidation Efficiency and Hysteresis Behavior over Mesoporous Pd/SiO2 Catalyst." Catalysts 11, no. 1 (2021): 131. http://dx.doi.org/10.3390/catal11010131.

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Carbon monoxide (CO) oxidation is considered an important reaction in heterogeneous industrial catalysis and has been extensively studied. Pd supported on SiO2 aerogel catalysts exhibit good catalytic activity toward this reaction owing to their CO bond activation capability and thermal stability. Pd/SiO2 catalysts were investigated using carbon monoxide (CO) oxidation as a model reaction. The catalyst becomes active, and the conversion increases after the temperature reaches the ignition temperature (Tig). A normal hysteresis in carbon monoxide (CO) oxidation has been observed, where the cata

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7

Bzovska and Mryglod. "Chemical oscillations in catalytic CO oxidation reaction." Condensed Matter Physics 13, no. 3 (2010): 34801. http://dx.doi.org/10.5488/cmp.13.34801.

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8

Dobrosz-Gómez, Izabela, Miguel-Ángel Gómez-García, and Jacek Michał Rynkowski. "The Origin of Au/Ce1-xZrxO2 Catalyst’s Active Sites in Low-Temperature CO Oxidation." Catalysts 10, no. 11 (2020): 1312. http://dx.doi.org/10.3390/catal10111312.

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Gold catalysts have found applications in many reactions of both industrial and environmental importance. Great interest has been paid to the development of new processes that reduce energy consumption and minimize pollution. Among these reactions, the catalytic oxidation of carbon monoxide (CO) is an important one, considering that a high concentration of CO in the atmosphere creates serious health and environmental problems. This paper examines the most important achievements and conclusions arising from the own authorship contributions concerning (2 wt. % Au)/Ce1−xZrxO2 catalyst’s active si

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9

Li, Guobo, Weiwei Feng, Yiwei Luo, et al. "Unraveling FeOx Nanoparticles Confined on Fibrous Mesoporous Silica Catalyst Construction and CO Catalytic Oxidation Performance." Catalysts 14, no. 1 (2024): 63. http://dx.doi.org/10.3390/catal14010063.

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Catalytic oxidation is used to control carbon monoxide (CO) emissions from industrial exhaust. In this study, a mesoporous silica material, KCC-1, was synthesized and used as a carrier with a high specific surface area to confine active component FeOx nanoparticles (NPs), and the CO catalytic oxidation performance of x%Fe@KCC-1 catalysts (x represents the mass loading of Fe) was studied. The experimental results showed that due to its large specific surface area and abundant mesopores, the FeOx NPs were highly dispersed on the surface of the KCC-1 carrier. The particle size of FeOx was very sm

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10

Mahmood, Asif, Shahid M. Ramay, Yousef Al-Zeghayer, Sajjad Haider, Muhammad Ali Shar, and Yasir Khalid. "Thermal Treatment Effect on Catalytic Activity of Au/TiO₂ for CO Oxidation." Applied Mechanics and Materials 548-549 (April 2014): 254–58. http://dx.doi.org/10.4028/www.scientific.net/amm.548-549.254.

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A novel and well-organized study for the synthesis and enhanced catalytic activity of Au/TiO2catalysts has been developed. A momentous improvement in the catalytic activity of Au/TiO2in CO oxidation and preferential oxidation reaction by thermal treatment has been studied. Au/TiO2catalyst (Au (1 wt.%) supported on TiO2) was prepared by conventional deposition-precipitation method with NaOH followed by washing, drying and calcination in air at 400 °C for 4 h. Thermal treatment of Au/TiO2was performed at 450 °C under 0.05 mTorr. The activity of the catalysts has been examined in the reaction of

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11

Peng, Anyang, Mayfair C. Kung, Robert R. O. Brydon, et al. "Noncontact catalysis: Initiation of selective ethylbenzene oxidation by Au cluster-facilitated cyclooctene epoxidation." Science Advances 6, no. 5 (2020): eaax6637. http://dx.doi.org/10.1126/sciadv.aax6637.

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Traditionally, a catalyst functions by direct interaction with reactants. In a new noncontact catalytic system (NCCS), an intermediate produced by one catalytic reaction serves as an intermediary to enable an independent reaction to proceed. An example is the selective oxidation of ethylbenzene, which could not occur in the presence of either solubilized Au nanoclusters or cyclooctene, but proceeded readily when both were present simultaneously. The Au-initiated selective epoxidation of cyclooctene generated cyclooctenyl peroxy and oxy radicals that served as intermediaries to initiate the eth

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12

Han, Qiuwan, Dongyang Zhang, Jiuli Guo, Baolin Zhu, Weiping Huang та Shoumin Zhang. "Improved Catalytic Performance of Au/α-Fe2O3-Like-Worm Catalyst for Low Temperature CO Oxidation". Nanomaterials 9, № 8 (2019): 1118. http://dx.doi.org/10.3390/nano9081118.

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The gold catalysts supported on various morphologies of α-Fe2O3 in carbon monoxide (CO) oxidation reaction have been studied for many researchers. However, how to improve the catalytic activity and thermal stability for CO oxidation is still important. In this work, an unusual morphology of α-Fe2O3 was prepared by hydrothermal method and gold nanoparticles were supported using a deposition-precipitation method. Au/α-Fe2O3 catalyst exhibited great activity for CO oxidation. The crystal structure and microstructure images of α-Fe2O3 were carried out by X-ray diffraction (XRD) and scanning electr

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13

Kappis, Konstantinos, Christos Papadopoulos, Joan Papavasiliou, et al. "Tuning the Catalytic Properties of Copper-Promoted Nanoceria via a Hydrothermal Method." Catalysts 9, no. 2 (2019): 138. http://dx.doi.org/10.3390/catal9020138.

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Copper-cerium mixed oxide catalysts have gained ground over the years in the field of heterogeneous catalysis and especially in CO oxidation reaction due to their remarkable performance. In this study, a series of highly active, atomically dispersed copper-ceria nanocatalysts were synthesized via appropriate tuning of a novel hydrothermal method. Various physicochemical techniques including electron paramagnetic resonance (EPR) spectroscopy, X-ray diffraction (XRD), N2 adsorption, scanning electron microscopy (SEM), Raman spectroscopy, and ultraviolet-visible diffuse reflectance spectroscopy (

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14

Liu, Xin, Xin Zhang, and Changgong Meng. "Coadsorption Interfered CO Oxidation over Atomically Dispersed Au on h-BN." Molecules 27, no. 11 (2022): 3627. http://dx.doi.org/10.3390/molecules27113627.

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Similar to the metal centers in biocatalysis and homogeneous catalysis, the metal species in single atom catalysts (SACs) are charged, atomically dispersed and stabilized by support and substrate. The reaction condition dependent catalytic performance of SACs has long been realized, but seldom investigated before. We investigated CO oxidation pathways over SACs in reaction conditions using atomically dispersed Au on h-BN (AuBN) as a model with extensive first-principles-based calculations. We demonstrated that the adsorption of reactants, namely CO, O2 and CO2, and their coadsorption with reac

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15

Peng, Liwen, Haiwang Wang, and Mengge Lv. "A Novel Preparation of Mn/NiCo2O4 Catalyst with High Catalytic Activity on Methane." Journal of Nanoelectronics and Optoelectronics 16, no. 6 (2021): 926–32. http://dx.doi.org/10.1166/jno.2021.3029.

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In this paper, a Mn/NiCo2O4 catalyst was prepared for the complete oxidation of low-concentration methane. When the ratio of Mn: Co is 1:4, the catalyst has the best catalytic activity, and the best methane conversion temperature Feis 400 °C. In addition, the catalytic activity remains stable during the long-term reaction, showing adequate thermal stability. The catalyst is grown on FeCrAl alloy by hydrothermal method to complete the catalytic oxidation of methane. In the catalysis process, the Mn/NiCo2O4-FeCrAl catalyst is energized and the current is directly passed through the alloy substra

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16

Turaeva, N. "SIZE EFFECTS IN THE D-BAND MODEL OF CO OXIDATION BY GOLD NANOPARTICLES." «Узбекский физический журнал» 20, no. 4 (2018): 236–42. http://dx.doi.org/10.52304/.v20i4.98.

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The volcano-type size dependence of the extraordinary catalytic activity of gold nanoparticles in CO oxidation is discussed on the basis of combination of the d-band model, the jellium model of metal clusters and the role of Fermi level in catalytic activity. The reaction rate depends non-monotonically upon the size of nanoparticles, due to exponential dependences of adsorption of reagents and desorption of products on the differences of the Fermi level of the metal cluster and antibonding states of CO and CO2 molecules forming chemical bonds with the nanoparticle, respectively. The origin of

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17

LÓPEZ-CARREÑO, L. D. "EFFECTS OF FINITE REACTION RATES ON THE KINETIC PHASE TRANSITIONS IN THE CATALYTIC OXIDATION OF CARBON MONOXIDE." Surface Review and Letters 09, no. 05n06 (2002): 1735–39. http://dx.doi.org/10.1142/s0218625x02004311.

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Oxidation of carbon monoxide is one of the most extensively studied heterogeneous catalysis reactions, being important among other applications in automobile-emission control. Catalytic oxidation of carbon monoxide on platinum (111) surface was simulated by the Monte Carlo technique following an extended version of the model proposed by Ziff, Gulari and Barshad (ZGB). In the simulation, a simple square two-dimensional lattice of active sites replaces the surface of the catalyst. Finite reaction rates for (i) diffusion of the reactive species on the surface, (ii) reaction of a CO molecule with

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18

Mo, Shengpeng, Qi Zhang, Yuhai Sun, et al. "Gaseous CO and toluene co-oxidation over monolithic core–shell Co3O4-based hetero-structured catalysts." Journal of Materials Chemistry A 7, no. 27 (2019): 16197–210. http://dx.doi.org/10.1039/c9ta03750k.

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Gaseous CO co-existence could improve catalytic toluene oxidation over Co<sub>3</sub>O<sub>4</sub>-based catalysts, and the reaction mechanism on the CO/toluene oxidation may be mutually independent in the presence of both CO and toluene.

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19

Eid, Kamel, Yahia Ahmad, Assem Mohamed, Anas Elsafy, and Siham Al-Qaradawi. "Versatile Synthesis of Pd and Cu Co-Doped Porous Carbon Nitride Nanowires for Catalytic CO Oxidation Reaction." Catalysts 8, no. 10 (2018): 411. http://dx.doi.org/10.3390/catal8100411.

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Developing efficient catalyst for CO oxidation at low-temperature is crucial in various industrial and environmental remediation applications. Herein, we present a versatile approach for controlled synthesis of carbon nitride nanowires (CN NWs) doped with palladium and copper (Pd/Cu/CN NWs) for CO oxidation reactions. This is based on the polymerization of melamine by nitric acid in the presence of metal-precursors followed by annealing under nitrogen. This intriguingly drove the formation of well-defined, one-dimensional nanowires architecture with a high surface area (120 m2 g−1) and doped a

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20

Zhang, Yu, Xiao-Ling Feng, Jia-Ye Ni, Bo Fu, Hai-Min Shen, and Yuan-Bin She. "Efficient Inhibition of Deep Conversion of Partial Oxidation Products in C-H Bonds’ Functionalization Utilizing O2 via Relay Catalysis of Dual Metalloporphyrins on Surface of Hybrid Silica Possessing Capacity for Product Exclusion." Biomimetics 9, no. 5 (2024): 272. http://dx.doi.org/10.3390/biomimetics9050272.

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To inhibit the deep conversion of partial oxidation products (POX-products) in C-H bonds’ functionalization utilizing O2, 5-(4-(chloromethyl)phenyl)-10,15,20-tris(perfluorophenyl)porphyrin cobalt(II) and 5-(4-(chloromethyl)phenyl)-10,15,20-tris(perfluorophenyl)porphyrin copper(II) were immobilized on the surface of hybrid silica to conduct relay catalysis on the surface. Fluorocarbons with low polarity and heterogeneous catalysis were devised to decrease the convenient accessibility of polar POX-products to catalytic centers on the lower polar surface. Relay catalysis between Co and Cu was des

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21

Mohiuddin, A. K. M. "Development of Catalytic Converter Using Non-Precious Metals." Advanced Materials Research 1115 (July 2015): 462–67. http://dx.doi.org/10.4028/www.scientific.net/amr.1115.462.

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This paper shows the uses of low cost metal for the development of catalytic converters. While bringing down the cost, attention must be paid on the performance capability of the catalytic converter. The objective of this work is to develop and design a low cost catalytic converter using copper as the main catalyst in the catalyst system. Copper powder was chosen as the alternative catalyst to reduce the use of precious group metals (PGMs) platinum, palladium, and rhodium. A spark ignition engine’s catalytic converter has to perform the oxidation of CO, oxidation of HC and reduction of NOxsimu

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22

Petrov, L. A., J. Soria, and R. Cataluna. "Influence of Copper on the Catalytic Activity of Supported Rhodium Catalysts in the Reactions of CO Oxidation and NO Reduction." Eurasian Chemico-Technological Journal 4, no. 4 (2017): 265. http://dx.doi.org/10.18321/ectj543.

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<p>The catalytic activity of Cu, Rh, and Rh/Cu, catalysts supported on Al<sub>2</sub>O<sub>3</sub>, CeO<sub>2</sub> and CeO<sub>2</sub>/Al<sub>2</sub>O<sub>3</sub> in reactions of CO oxidation and NO reduction has been studied in temperature-programmed regime. Addition of Cu to Rh catalysts decreases temperature at which 5 and 50% degree of conversion, while end of reaction temperature is not influenced by presence of Cu. The presence of Cu has positive effect on the activity of Rh containing catalysts in the low tem

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23

Dong, Feng, Yuan Guo, Dongyang Zhang, Baolin Zhu, Weiping Huang, and Shoumin Zhang. "Gold Nanoparticles Supported on Urchin-Like CuO: Synthesis, Characterization, and Their Catalytic Performance for CO Oxidation." Nanomaterials 10, no. 1 (2019): 67. http://dx.doi.org/10.3390/nano10010067.

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Gold catalysts have been studied in-depth due to their unique activities for catalytic CO oxidation. Supports have intrinsic motivation for the high activity of gold catalysts. Thermally stable urchin-like CuO microspheres, which are potential support for gold catalysts, were prepared by facile solution-method. Then gold nanoparticles were loaded on them by deposition-precipitation method. The obtained gold catalysts were characterized by SEM, XRD, TEM, BET, ICP, and XPS. Their catalytic activity for CO oxidation was also evaluated. TEM results revealed that the gold nanoparticles with small s

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24

Kong, De-Long, Jian-Xun Du, Wei-Ming Chu, Chun-Ying Ma, Jia-Yi Tao, and Wen-Hua Feng. "Ag/Pyridine Co-Mediated Oxidative Arylthiocyanation of Activated Alkenes." Molecules 23, no. 10 (2018): 2727. http://dx.doi.org/10.3390/molecules23102727.

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An efficient Ag/pyridine co-mediated oxidative arylthiocyanation of activated alkenes via radical addition/cyclization cascade process was developed. This reaction could be carried out under mild conditions to provide biologically interesting 3-alkylthiocyanato-2-oxindoles in good to excellent yields. Mechanistic studies suggested a unique NCS• radical addition path and clarified the dual roles of catalytic pyridine as base and crucial ligand to accelerate the oxidation of Ag(I) to Ag(II), which is likely oxidant responsible for the formation of NCS• radical. These mechanistic results may impa

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25

Zhu, Xinbo, Xiqiang Wu, Jin Liu та ін. "Soot Oxidation over γ-Al2O3-Supported Manganese-Based Binary Catalyst in a Dielectric Barrier Discharge Reactor". Catalysts 12, № 7 (2022): 716. http://dx.doi.org/10.3390/catal12070716.

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In this work, soot oxidation was conducted over a series of Mn-X/γ-Al2O3 (M = Ce, Co and Cu) binary catalysts in a dielectric barrier discharge reactor. The soot conversion in the plasma–catalytic system was in the order of Mn/γ-Al2O3 (57.7%) > Mn-Co/γ-Al2O3 (53.9%) > Mn-Ce/γ-Al2O3 (51.6%) > Mn-Cu/γ-Al2O3 (47.7%) during the 30 min soot oxidation process at 14 W and 150 °C. Meanwhile, the doping of Ce, Co and Cu slightly improved the CO2 selectivity of the process by 4.7% to 10.3% compared to soot oxidation over Mn/γ-Al2O3.It is worth to note that the order of CO2 selectivity was in th

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26

Li, Jing-Jing, Bao-Lin Zhu, Gui-Chang Wang, Zun-Feng Liu, Wei-Ping Huang, and Shou-Min Zhang. "Enhanced CO catalytic oxidation over an Au–Pt alloy supported on TiO2 nanotubes: investigation of the hydroxyl and Au/Pt ratio influences." Catalysis Science & Technology 8, no. 23 (2018): 6109–22. http://dx.doi.org/10.1039/c8cy01642a.

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27

Mouanni, Sihem, Tassadit Mazari, Sihem Benadji, Leila Dermeche, Catherine Marchal-Roch, and Cherifa Rabia. "Simple and Green Adipic Acid Synthesis from Cyclohexanone and/or Cyclohexanol Oxidation with Efficient (NH4)xHyMzPMo12O40 (M: Fe, Co, Ni) Catalysts." Bulletin of Chemical Reaction Engineering & Catalysis 13, no. 2 (2018): 386. http://dx.doi.org/10.9767/bcrec.13.2.1749.386-392.

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The oxidation of cyclohexanone and/or cyclohexanol to adipic acid (AA) was performed at 90 °C with a reaction time of 20 h, in the presence of H2O2 as oxidant and transition metal substituted ammonia polyoxometalates of formula, (NH4)xHyMzPMo12O40 (M: Fe, Co, or Ni, and x = 2.5 or 2.28) as catalysts. The catalytic results showed that the AA yield is sensitive to the transition metal nature and to the reaction conditions (sample weight and substrate amount). The (NH4)2.29H0.39Co0.16PMo12O40 was found to be the better catalytic system toward AA synthesis from cyclohexanone oxidation, with 40% of

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28

Mundschau, M., M. E. Kordesch, B. Rausenberger, W. Engel, A. M. Bradshaw, and E. Zeitler. "The influence of surface defects on the catalytic reaction of submonolayer films observed by photoemission electron microscopy." Proceedings, annual meeting, Electron Microscopy Society of America 48, no. 4 (1990): 268–69. http://dx.doi.org/10.1017/s0424820100174473.

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Defects on surfaces are known to greatly enhance the rate of many catalytic reactions. In some cases, the active sites in catalysis may reside only at defect sites. Surface defects are best characterized by microscopic techniques. It was demonstrated earlier that catalytic reactions can be followed using an ultra high vacuum version of a classical photoemission electron microscope. This technique can image submonolayer coverages because of the extreme sensitivity of photoemission to local work function.We report here studies on the catalytic oxidation of adsorbed CO on Pt which was followed in

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Zhang, Hao, Tan Meng, Min Zhang, et al. "Understanding the Role of Active Lattice Oxygen in CO Oxidation Catalyzed by Copper-Doped Mn2O3@MnO2." Molecules 30, no. 4 (2025): 865. https://doi.org/10.3390/molecules30040865.

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Although the hopcalite catalyst, primarily composed of manganese oxide and copper oxide, has been extensively studied for carbon monoxide (CO) elimination, there remains significant potential to optimize its structure and activity. Herein, Cu-doped Mn3O2@MnO2 catalysts featuring highly exposed interfacial regions were prepared. The correlation between interfacial exposure and catalytic activity indicates that the interfacial region serves as the active site for CO catalytic oxidation. The characteristic adsorption of CO by Cu species significantly enhances the catalytic activity of the catalys

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Todorova, Totka, Petya Petrova, and Yuri Kalvachev. "Catalytic Oxidation of CO and Benzene over Metal Nanoparticles Loaded on Hierarchical MFI Zeolite." Molecules 26, no. 19 (2021): 5893. http://dx.doi.org/10.3390/molecules26195893.

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In order to obtain highly active catalytic materials for oxidation of carbon monoxide and volatile organic compounds (VOCs), monometallic platinum, copper, and palladium catalysts were prepared by using of two types of ZSM-5 zeolite as supports—parent ZSM-5 and the same one treated by HF and NH4F buffer solution. The catalyst samples, obtained by loading of platinum, palladium, and copper on ZSM-5 zeolite treated using HF and NH4F buffer solution, were more active in the reaction of CO and benzene oxidation compared with catalyst samples containing untreated zeolite. The presence of secondary

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Wu, Ke, Liang Zhou, Chun-Jiang Jia, Ling-Dong Sun, and Chun-Hua Yan. "Pt-embedded-CeO2hollow spheres for enhancing CO oxidation performance." Materials Chemistry Frontiers 1, no. 9 (2017): 1754–63. http://dx.doi.org/10.1039/c7qm00244k.

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32

Krishnan, Ranganathan, Shiuan-Yau Wu, and Hsin-Tsung Chen. "Catalytic CO oxidation on B-doped and BN co-doped penta-graphene: a computational study." Physical Chemistry Chemical Physics 20, no. 41 (2018): 26414–21. http://dx.doi.org/10.1039/c8cp04745f.

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The catalytic reaction of carbon monoxide oxidation on boron-doped and boron–nitrogen co-doped penta-graphene materials has been systematically studied by utilizing spin-polarized density functional theory (DFT) calculations.

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Díaz-Verde, Álvaro, Salvador Montilla-Verdú, Verónica Torregrosa-Rivero, and María-José Illán-Gómez. "Tailoring the Composition of BaxBO3 (B = Fe, Mn) Mixed Oxides as CO or Soot Oxidation Catalysts in Simulated GDI Engine Exhaust Conditions." Molecules 28, no. 8 (2023): 3327. http://dx.doi.org/10.3390/molecules28083327.

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Mixed oxides with perovskite-type structure (ABO3) are promising catalysts for atmospheric pollution control due to their interesting and tunable physicochemical properties. In this work, two series of BaxMnO3 and BaxFeO3 (x = 1 and 0.7) catalysts were synthesized using the sol–gel method adapted to aqueous medium. The samples were characterized by μ-XRF, XRD, FT-IR, XPS, H2-TPR, and O2-TPD. The catalytic activity for CO and GDI soot oxidation was determined by temperature-programmed reaction experiments (CO-TPR and soot-TPR, respectively). The results reveal that a decrease in the Ba content

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Ko, Eun-Yong, Eun Duck Park, Kyung Won Seo, Hyun Chul Lee, Doohwan Lee, and Soonho Kim. "Nanosized Pt-Co Catalysts for the Preferential CO Oxidation." Journal of Nanoscience and Nanotechnology 6, no. 11 (2006): 3567–71. http://dx.doi.org/10.1166/jnn.2006.17984.

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The preferential CO oxidation in the presence of excess hydrogen was studied over Pt-Co/γ-Al2O3. CO chemisorption, X-ray diffraction (XRD), transmission electron microscopy (TEM), energy dispersive X-ray spectrometer (EDX) and temperature programmed reduction (TPR) were conducted to characterize active catalysts. The catalytic activity for CO oxidation and methanation at low temperatures increased with the amounts of cobalt in Pt-Co/γ-Al2O3. This accompanied the TPR peak shift to lower temperatures. The optimum molar ratio between Co and Pt was determined to be 10. The co-impregnated Pt-Co/γ-A

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35

Isupova, Lyubov, Vladimir Rogov, Evgenii Gerasimov, and Igor Prosvirin. "Influence of the LaMn1−xFexO3 (x = 0–1) Composition on Catalytic Activities in the Reactions Involving Oxygen." Catalysts 12, no. 12 (2022): 1563. http://dx.doi.org/10.3390/catal12121563.

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Perovskite samples of the LaMn1−xFexO3 (x = 0–1) series were prepared by the Pechini method; their physicochemical properties were studied using XRD, HRTEM, XPS, and BET, and their catalytic activity was estimated in nitrous oxide decomposition and methane and CO oxidation reactions. In methane and CO oxidation reactions, all intermediate (0 < x < 1) samples of the series exhibited a lower catalytic activity normalized to the unit surface area as compared to the extreme terms, whereas in the nitrous oxide decomposition all intermediate samples were more active than extreme terms of the s

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Hu, Ting Ting, and Lin Hua Zhu. "Preparation of Gold Nanoparticles Supported on Montmorillonite and its Catalytic Activity for CO Oxidation." Advanced Materials Research 955-959 (June 2014): 51–55. http://dx.doi.org/10.4028/www.scientific.net/amr.955-959.51.

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Gold catalysts supported on Na-MMT and Al-PILM noted as Au/Na-MMT and Au/Al-PILM respectively were prepared using Au(en)2Cl3 as precursor, and the catalytic oxidation activity for CO oxidation was investigated. The influence of different carriers on the conversion of CO was discussed. The phase of catalysts, the actual gold loading and the morphology of gold nanoparticles were characterized by X-ray diffraction(XRD), X-ray fluorescence analysis(XRF) and Transmission electron microscopy(TEM). The results showed that Au/Al-PILM exhibited higher catalytic activity for the oxidation reaction of CO

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Wang, Ying-Ying. "Theoretical study of the oxidation of formic acid on a PtPd(111) surface." Progress in Reaction Kinetics and Mechanism 44, no. 1 (2019): 67–73. http://dx.doi.org/10.1177/1468678319830512.

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By performing density functional theory calculations, the adsorption configurations of formic acid and possible reaction pathway for HCOOH oxidation on PtPd(111) surface are located. Results show that CO2 is preferentially formed as the main product of the catalytic oxidation of formic acid. The formation of CO on the pure Pd surface could not possibly occur during formic acid decomposition on the PtPd(111) surface owing to the high reaction barrier. Therefore, no poisoning of catalyst would occur on the PtPd(111) surface. Our results indicate that the significantly increased catalytic activit

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Zhang, Xuejun, Min Zhao, Zhongxian Song, et al. "The effect of different metal oxides on the catalytic activity of a Co3O4 catalyst for toluene combustion: importance of the structure–property relationship and surface active species." New Journal of Chemistry 43, no. 27 (2019): 10868–77. http://dx.doi.org/10.1039/c9nj01783f.

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The Co–La catalyst was used to the catalytic oxidation of toluene. The LaCoO<sub>3</sub> perovskite was detected. The abundance of Co<sup>3+</sup> and active oxygen contributed synergistically to the redox cycle reaction, which could improve the catalytic activity.

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Li, Xiaodi, Shan Ren, Zhichao Chen, et al. "A Review of Mn-Based Catalysts for Abating NOx and CO in Low-Temperature Flue Gas: Performance and Mechanisms." Molecules 28, no. 19 (2023): 6885. http://dx.doi.org/10.3390/molecules28196885.

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Mn-based catalysts have attracted significant attention in the field of catalytic research, particularly in NOx catalytic reductions and CO catalytic oxidation, owing to their good catalytic activity at low temperatures. In this review, we summarize the recent progress of Mn-based catalysts for the removal of NOx and CO. The effects of crystallinity, valence states, morphology, and active component dispersion on the catalytic performance of Mn-based catalysts are thoroughly reviewed. This review delves into the reaction mechanisms of Mn-based catalysts for NOx reduction, CO oxidation, and the

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Sun, Youyi. "Opinion — On a New Mechamistic Model Toward the Catalytic Reactions: From Hydrogen Combustion to Fischer-Tropsch Reaction." American Journal of Physical Chemistry 13, no. 2 (2024): 35–42. http://dx.doi.org/10.11648/j.ajpc.20241302.12.

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Mechanism research in catalytic chemistry is both fascinating and confusing, particularly when it comes to solid-state catalysts, the nature of catalytic behaviours has been unidentified so far. For a mechanistic model to be acceptable, it should have an ability to explain all unique aspects of a given catalytic reaction and provide an illuminating explanation to a widely range of catalytic reaction. In our recent reports, a new mechanistic model was suggested for catalytic CO&lt;sub&gt;2&lt;/sub&gt; reduction reaction on Cu metal and hydrogen evolution reaction on various tran

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Zedan, Abdallah F., Safa Gaber, Amina S. AlJaber, and Kyriaki Polychronopoulou. "CO Oxidation at Near-Ambient Temperatures over TiO2-Supported Pd-Cu Catalysts: Promoting Effect of Pd-Cu Nanointerface and TiO2 Morphology." Nanomaterials 11, no. 7 (2021): 1675. http://dx.doi.org/10.3390/nano11071675.

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Significant improvement of the catalytic activity of palladium-based catalysts toward carbon monoxide (CO) oxidation reaction has been achieved through alloying and using different support materials. This work demonstrates the promoting effects of the nanointerface and the morphological features of the support on the CO oxidation reaction using a Pd-Cu/TiO2 catalyst. Pd-Cu catalysts supported on TiO2 were synthesized with wet chemical approaches and their catalytic activities for CO oxidation reaction were evaluated. The physicochemical properties of the prepared catalysts were studied using s

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Jiang, Angran, Zhibo Ren, Yaqi Qu, Yanjun Zhang, and Jianwei Li. "Promotional Effect of Pt-Doping on the Catalytic Performance of Pt−CeO2 Catalyst for CO Oxidation." Catalysts 12, no. 5 (2022): 529. http://dx.doi.org/10.3390/catal12050529.

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Growing interest in the development of a hydrogen economy means that CO oxidation is increasingly important for upgrading H2-rich fuel gas streams for fuel cells. CeO2-supported catalysts are the most promising candidates for the catalytic oxidation of CO because of their high activity. In the present work, DFT+U calculations were performed to investigate the stability and CO oxidation reactivity of Ptn (n = 1−4) clusters supported on CeO2(111) (Pt/CeO2) and Pt-doped CeO2(111) (Pt/(Pt−Ce)O2) surfaces. The Pt clusters showed similar nucleation behavior on both CeO2 and (Pt−Ce)O2 surfaces. Furth

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Palagin, Dennis, and Jonathan P. K. Doye. "CO oxidation catalysed by Pd-based bimetallic nanoalloys." Physical Chemistry Chemical Physics 17, no. 42 (2015): 28010–21. http://dx.doi.org/10.1039/c5cp00889a.

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Density functional theory based global geometry optimization has been used to demonstrate the crucial influence of the geometry of the catalytic cluster on the energy barriers for the CO oxidation reaction over Pd-based bimetallic nanoalloys.

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Smolin, Alexander V., Мikhail N. Mikhailov, Aleksey F. Gadzaov та Leonid M. Kustov. "Dynamics of Oxidation of Reduced Forms of CO2 under Electrochemical and Open-Сircuit Conditions on Polycrystalline Pt in H2CO3". Metals 11, № 2 (2021): 274. http://dx.doi.org/10.3390/met11020274.

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The problem of identifying correlations between catalytic and electrocatalytic processes is one of the fundamental problems of catalysis among “simple” organic substances, and the oxidation of CO and rCO2 is of great interest, since CO and CO2 are considered in pairs both during catalytic and electrocatalytic transformations. In the case of electrocatalysis, this analysis is important in the study of fuel cells. In this paper, we studied the correlation between the oxidation of reduced forms of CO2 (rCO2) under potentiodynamic-galvanoctatic electrochemical and open-circuit conditions of measur

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Suchorski, Y., I. Bespalov, J. Zeininger та ін. "CO Oxidation on Stepped Rh Surfaces: μm-Scale Versus Nanoscale". Catalysis Letters 150, № 3 (2019): 605–12. http://dx.doi.org/10.1007/s10562-019-02950-0.

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Abstract The catalytic CO oxidation reaction on stepped Rh surfaces in the 10−6 mbar pressure range was studied in situ on individual μm-sized high-Miller-index domains of a polycrystalline Rh foil and on nm-sized facets of a Rh tip, employing photoemission electron microscopy (PEEM) and field-ion/field-emission microscopy (FIM/FEM), respectively. Such approach permits a direct comparison of the reaction kinetics for crystallographically different regions under identical reaction conditions. The catalytic activity of the different Rh surfaces, particularly their tolerance towards poisoning by

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El-Shobaky, G. A., A. S. Ahmad, A. M. Ghozza та S. M. El-Khouly. "Surface and Catalytic Properties of γ-Irradiated Fe2O3/Al2O3 Solids". Adsorption Science & Technology 13, № 3 (1996): 153–63. http://dx.doi.org/10.1177/026361749601300302.

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Two specimens of Fe2O3/Al2O3 solids were prepared by impregnating a known mass of finely-powdered Al(OH)3 with calculated amounts of ferric nitrate solutions followed by drying at 120°C and calcination in air at 400°C for 4 h. The mixed solids thus prepared had the nominal molar compositions 0.06Fe2O3/Al2O3 and 0.125Fe2O3/Al2O3 (FeAl-I and FeAl-II). The surface and catalytic properties of various irradiated solids (15–200 Mrad) were studied using nitrogen adsorption at −196°C and catalysis of CO oxidation by O2 at 150–280°C using a static method. The results obtained revealed that γ-irradiatio

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Chen, Liqing, Fanhui Guo, Jianjun Wu, Ping Li, and Yixin Zhang. "Research on Coal Tar Pitch Catalytic Oxidation and Its Effect on the Emission of PAHs during Co-Carbonation with Coal." Catalysts 11, no. 12 (2021): 1428. http://dx.doi.org/10.3390/catal11121428.

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Coal tar pitch (CTP) is abundant and widely used, but its properties will be affected due to oxidation aging during storage. In this study, CTP was oxidized by simulating the air oxidation process, and the change of chemical structure has been analyzed by Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), and both gas chromatography and mass spectrometry (GCMS). The effects of the oxidized and unoxidized CTP co-carbonization with coal on the polycyclic aromatic hydrocarbons (PAHs) emission were detected by GCMS. The small and medium-molecule aromatic substances were reduc

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Gao, Wei, Sai Tang, Ting Wu, Jianhong Wu, Kai Cheng, and Minggui Xia. "Solid Fe Resources Separated from Rolling Oil Sludge for CO Oxidation." International Journal of Molecular Sciences 23, no. 20 (2022): 12134. http://dx.doi.org/10.3390/ijms232012134.

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The efficient recycling of valuable resources from rolling oil sludge (ROS) to gain new uses remains a formidable challenge. In this study, we reported the recycling of solid Fe resources from ROS by a catalytic hydrogenation technique and its catalytic performance for CO oxidation. The solid Fe resources, after calcination in air (Fe2O3-H), exhibited comparable activity to those prepared by the calcinations of ferric nitrate (Fe2O3-C), suggesting that the solid resources have excellent recycling value when used as raw materials for CO oxidation catalyst preparation. Further studies to improve

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Dey, Subhashish, Ganesh Chandra Dhal, Devendra Mohan, and Ram Prasad. "Effect of Preparation Conditions on the Catalytic Activity of CuMnOx Catalysts for CO Oxidation." Bulletin of Chemical Reaction Engineering & Catalysis 12, no. 3 (2017): 437. http://dx.doi.org/10.9767/bcrec.12.3.900.437-451.

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The hopcalite (CuMnOx) catalyst is a well-known catalyst for oxidation of CO at ambient temperature. It has prepared by co-precipitation method and the preparation parameters were like Copper/Manganese (Cu:Mn) molar ratios, drying temperature, drying time, calcination temperature and calcination time has an influence on activity of the resultant catalyst. The activity of the catalyst was measured in flowing air calcinations (FAC) conditions. The reaction temperature was increased from ambient to a higher value at which complete oxidation of CO was achieved. The particle size, weight of catalys

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Al Soubaihi, Rola, Khaled Saoud, and Joydeep Dutta. "Critical Review of Low-Temperature CO Oxidation and Hysteresis Phenomenon on Heterogeneous Catalysts." Catalysts 8, no. 12 (2018): 660. http://dx.doi.org/10.3390/catal8120660.

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There is a growing demand for new heterogeneous catalysts for cost-effective catalysis. Currently, the hysteresis phenomenon during low-temperature CO oxidation is an important topic in heterogeneous catalysis. Hysteresis provides important information about fluctuating reaction conditions that affect the regeneration of active sites and indicate the restoration of catalyst activity. Understanding its dynamic behavior, such as hysteresis and self-sustained kinetic oscillations, during CO oxidation, is crucial for the development of cost-effective, stable and long-lasting catalysts. Hysteresis

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