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首页> 外文期刊>Catalysis Today >Preparation of structured catalysts with Ni and Ni Rh/CeO2 catalytic layers for syngas production by biogas reforming processes
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Preparation of structured catalysts with Ni and Ni Rh/CeO2 catalytic layers for syngas production by biogas reforming processes

机译：使用Ni和Ni Rh / CeO2催化层制备结构化催化剂，以通过沼气重整工艺生产合成气

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摘要

Ni(7.5 wt.%)/CeO2 and Ni(7.5 wt.%)-Rh(0.5 wt.%)/CeO2 powders (previously prepared by solution combustion synthesis) were washcoated on cordierite monolith and alumina open-cell foam by means of support dip-coating into acid-free catalyst dispersion. Catalytic performances toward the steam reforming (SR) and the oxy-steam reforming (OSR) of biogas were investigated and compared at different temperatures (700-800 degrees C) and weight space velocities (WSV = 70,000-350,000 Nml g(cat)(-1) h(-1)). Coating load was controlled by multiple depositions; homogeneous and well adherent layers were found. Catalytic tests demonstrated superior performances of the bimetallic samples (Ni-Rh/CeO2) compared to the monometallic one (Ni/CeO2), especially at high space velocity. At the same time, foam showed better performances with respect to the monolithic support toward the SR and OSR processes. (C) 2016 Elsevier B.V. All rights reserved.
机译：将Ni（7.5wt。％）/ CeO 2和Ni（7.5wt。％）-Rh（0.5wt。％）/ CeO 2粉末（先前通过溶液燃烧合成制备）通过堇青石整料和氧化铝开孔泡沫涂覆在基体上。支持浸涂成无酸催化剂分散体。研究并比较了在不同温度（700-800摄氏度）和空速（WSV = 70,000-350,000 Nml g（cat）（）下，沼气的蒸汽重整（SR）和氧-蒸汽重整（OSR）的催化性能（ -1）h（-1））。涂层负荷由多次沉积控制;发现均匀且粘附良好的层。催化测试表明，双金属样品（Ni-Rh / CeO2）的性能优于单金属样品（Ni / CeO2），特别是在高空速下。同时，相对于用于SR和OSR工艺的整体式载体，泡沫材料表现出更好的性能。 （C）2016 Elsevier B.V.保留所有权利。

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