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Kinetics of Oxidative Coupling of Methane over Na/BaTiO3/MgO Catalyst: Mechanistic Aspects
OCM Oxidative coupling Methane Reaction rate Reaction mechanism
2009/7/28
The kinetics of oxidative coupling of methane reaction over a Na/BaTiO3/MgO catalyst was studied under differential conditions in a fixed bed flow reactor. The experiments were carried out at 725, 77...
Development of a Co-MgO Catalyst for High-pressure Dry Reforming of Methane Based on Design of Experiment, Artificial Neural Network and Grid Search
Methane dry reforming Combinatorial catalysis Design of experiment
2009/7/24
Dry reforming of methane is a potentially important process to convert the greenhouse gases carbon dioxide and methane simultaneously to syngas (CO + H2). The most serious problem with the dry reform...
摘要采用TPR、BET、XRD、TG及反应性能评价等研究方法，考察了焙烧温度对甲烷催化部分氧化制合成气Ni/MgO-Al2O3催化剂结构和性能的影响。研究结果表明，随焙烧温度的升高， Ni/MgO-Al2O3中的镍物种与载体作用逐渐增强，生成了NiAl2O4尖晶石和NiMgO2固熔体。虽然焙烧温度提高会使催化剂比表面降低，由于尖晶石结构的形成，其热稳定性会明显提高，将有利于抑制催化剂在反应过程中因...
摘要采用分步浸渍法制备了MgO改性的Ni/Al2O3催化剂，采用BET、XRD、H2TPR、TEM和活性评价等研究方法，考察了MgO助剂对Ni/Al2O3催化剂物化性质和甲烷部分氧化制合成气反应性能的影响。实验结果表明，MgO助剂提高了催化剂镍物种的均一性，抑制了NiAl2O4尖晶石的形成，并且增强了镍物种与载体的相互作用，这与MgO、NiO形成固溶体及与Al2O3形成MgAl2O4有关。同时，...