MgO纳米晶负载镍催化剂用于甲烷蒸汽重整反应(英文)

【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. 【作者单位】： Department
【关键词】： Steam reforming Carbon deposition Nickel‐magnesia solid solution
【基金】：supported by Islamic Azad University,Omidiyeh Branch
【分类号】：O643.32
【正文快照】： 1.Introduction The reforming of methane with steam is used in industry for synthesis gas production[1].In this process,different catalysts have been used.Deactivation of nickel catalysts as a result of carbon deposition is a main problem in this process[

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