期刊
FRONTIERS OF CHEMICAL SCIENCE AND ENGINEERING
卷 7, 期 3, 页码 270-278出版社
HIGHER EDUCATION PRESS
DOI: 10.1007/s11705-013-1337-2
关键词
macroporous Ni-based catalyst; monolith; hydrogen production; ethanol steam reforming
资金
- Program of Introducing Talents to the University Disciplines [B06006]
- Program for Changjiang Scholars and Innovative Research Teams in Universities [IRT 0641]
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 H-2-rich gas. The Ni/Mg-Al 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 m(2) . 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-Al monolith exhibited superior reactivity in terms of H-2 production and also had lower CH4 yields at 700 degrees C and 800 degrees C. Furthermore, the monolithic catalyst maintained excellent activity and H-2 selectivity after 100-h on-stream at 700 degrees C, as well as good resistance to coking and metal sintering.
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