Sustainable H2 production from ethanol steam reforming over a macro-mesoporous Ni/Mg-Al-O catalytic monolith  

作　　者：Ruixue GU Guangming ZENG Jingjing SHAO Yuan LIU Johannes W. Schwank Yongdan LI 

机构地区：[1]Tianjin Key Laboratory of Applied Catalysis Science and Technology and State Key Laboratory for Chemical Engineering (Tianjin University), School of Chemical Engineering, Tianjin University, Tianjin 300072, China [2]Department of Chemical Engineering, University of Michigan, Ann Arbor, MI 48109-2136, USA

出　　处：《Frontiers of Chemical Science and Engineering》2013年第3期270-278,共9页化学科学与工程前沿（英文版）

摘　　要：A macro-meso-porous monolithic Ni-based catalyst was prepared via an impregnation route using polystyrene foam as the template and then used in the steam reforming of ethanol to produce a H2-rich gas. The Ni/Mg-A1 catalyst has a hierarchically macro-meso-porous structure as indicated by photographs and scanning electron microscopy （SEM）. The surface area of the catalyst was 230 m2＂ g 1 and the Ni dispersion was 5.62%. Compared to the pelletized sample that was prepared without a template, the macro-meso-porous Ni/Mg-A1 monolith exhibited superior reactivity in terms of H2 production and also had lower CH4 yields at 700~C and 800℃. Furthermore, the monolithic catalyst maintained excellent activity and H2 selectivity after 100-h on-stream at 700℃, as well as good resistance to coking and metal sintering.A macro-meso-porous monolithic Ni-based catalyst was prepared via an impregnation route using polystyrene foam as the template and then used in the steam reforming of ethanol to produce a H2-rich gas. The Ni/Mg-A1 catalyst has a hierarchically macro-meso-porous structure as indicated by photographs and scanning electron microscopy （SEM）. The surface area of the catalyst was 230 m2＂ g 1 and the Ni dispersion was 5.62%. Compared to the pelletized sample that was prepared without a template, the macro-meso-porous Ni/Mg-A1 monolith exhibited superior reactivity in terms of H2 production and also had lower CH4 yields at 700~C and 800℃. Furthermore, the monolithic catalyst maintained excellent activity and H2 selectivity after 100-h on-stream at 700℃, as well as good resistance to coking and metal sintering.

关 键 词：macroporous Ni-based catalyst hydrogen production ethanol steam reforming 

分 类 号：TQ127.2[化学工程—无机化工] O643[理学—物理化学]