MgO纳米晶负载镍催化剂用于甲烷蒸汽重整反应(英文)  

A nanocrystalline MgO support for Ni catalysts for steam reforming of CH_4

作　　者：Mahmood ANDACHE Mehran REZAEI Mansour KAZEMI MOGHADAM 

机构地区：[1]Department of Chemistry,Islamic Azad University,Omidiyeh Branch [2]Catalyst and Advanced Materials Research Laboratory,Chemical Engineering Department,Faculty of Engineering,University of Kashan [3]Chemical Engineering Department,Iran University of Science and Technology

出　　处：《催化学报》2013年第7期1443-1448,共6页

基　　金：supported by Islamic Azad University,Omidiyeh Branch

摘　　要：Nanocrystalline MgO with a relatively high surface area and mesoporous structure was synthesized by a surfactant assisted precipitation method for use as the support of nickel catalysts for steam reforming of methane. The samples were characterized by X‐ray diffraction, N2 adsorption, temperature‐programmed reduction, temperature‐programmed oxidation, scanning electron microscopy, and transmission electron microscopy. The catalysts showed high catalytic activity and good stability in the steam reforming of methane. Increasing the nickel loading up to 10 wt% gave increased activity. Catalysts with higher nickel loadings showed more deposited carbon after reaction. The excellent anti‐coking performance of the catalysts was attributed to the formation of a nickel‐magnesia solid solution, basicity of the support surface, and nickel‐support interaction.Nanocrystalline MgO with a relatively high surface area and mesoporous structure was synthesized by a surfactant assisted precipitation method for use as the support of nickel catalysts for steam reforming of methane. The samples were characterized by X‐ray diffraction, N2 adsorption, temperature‐programmed reduction, temperature‐programmed oxidation, scanning electron microscopy, and transmission electron microscopy. The catalysts showed high catalytic activity and good stability in the steam reforming of methane. Increasing the nickel loading up to 10 wt% gave increased activity. Catalysts with higher nickel loadings showed more deposited carbon after reaction. The excellent anti‐coking performance of the catalysts was attributed to the formation of a nickel‐magnesia solid solution, basicity of the support surface, and nickel‐support interaction.

关 键 词：镍催化剂 甲烷重整 MGO 纳米晶 水蒸气重整 载体 透射电子显微镜 扫描电子显微镜 

分 类 号：O643.32[理学—物理化学]