Plasma plasma and ten catalysts have different effects on the conversion of methane to carbon dioxide

• Categories:Technical Support
• Author:Plasma cleaning machine-CRF plasma plasma equipment-plasma surface treatment machine manufacturer-chengfeng intelligent manufacturing
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• Time of issue:2022-02-22
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(Summary description)Plasma plasma and ten catalysts have different effects on the conversion of methane to carbon dioxide: Transition metal oxides are an important class of catalysts in industrial catalysts, and the heterogeneous catalytic reactions they participate in are usually carried out by the acid-base action or redox action of the catalyst. The research results of oxidative coupling of methane (OCM) under common catalytic conditions or under the combined action of plasma plasma catalysis show that most transition metal oxide catalysts have certain catalytic activity. Combined with previous studies on plasma plasma catalysis Working experience in methane dehydrogenation reaction under the action of selected transition metals such as Mn, Fe, Co, Ni and W to prepare their supported metal oxide catalysts, and research on CO2 oxidation under the combined action of supported transition metal oxide catalysts and plasma plasma Catalytic activity in the reaction of CH4 to C2 hydrocarbons. The order of methane conversion under the combined action of ten transition metal oxide catalysts such as NiO/Y-Al2O3 and plasma plasma is as follows: NiO/Y-Al2O3>ZnO/Y-Al2O3≈MoO3/Y-Al2O3>Re2Q7/Y-Al2O3>TiO2/7-Al2O3≈Cr2O3/Y-Al2O3≈Mn2O3/Y-Al2O3>Na2WO4/Y-Al2O3≈FeO3/ Y-Al2O3>Co2O2/Y-Al2O3. The order of carbon dioxide conversion rates is: Ni0/Y-Al2O3>TiO2/Y-Al2O3>Co2O3/Y-Al2O3> Na2WO4/Y-Al2O3≈Fe2O3/Y-Al2O3>Re2O7/Y-Al2O3≈Cr2O3/Y-Al2O3>Mn2O3/Y-Al2O3≈MoO3/ Y-Al2O3>ZnO/Y-Al2O3. It can be seen that under the same experimental conditions, the above ten catalysts and plasma plasma have different effects on the conversion of methane and carbon dioxide, and are different from the conversion of methane and carbon dioxide under the action of pure plasma (26.7% and 20.2%, respectively). NiO/Y-AL2O3 combined with plasma gave higher methane and carbon dioxide conversions (32.6% and 34.2%, respectively), while Co2O3/Y-Al2O3 and ZnO/Y-Al2O3 gave lower methane and carbon dioxide conversions rate (22.4% and 17.6%, respectively), the former is 10.2% and 16.6% higher than the latter, respectively. It shows that the catalysts participate in the C-H bond and C-O bond cleavage process of methane and carbon dioxide to different degrees.