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Enrichment of Hydrogen Production from Biomass‐Gasification‐Derived Syngas over Spinel‐Type Aluminate‐Supported Nickel Catalysts
Author(s) -
Chuang KuiHao,
Chen BingNan,
Wey MingYen
Publication year - 2018
Publication title -
energy technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.91
H-Index - 44
eISSN - 2194-4296
pISSN - 2194-4288
DOI - 10.1002/ente.201700473
Subject(s) - syngas , catalysis , hydrogen production , spinel , chemical engineering , steam reforming , coke , syngas to gasoline plus , water gas shift reaction , carbon dioxide reforming , methane , methane reformer , mesoporous material , chemistry , materials science , inorganic chemistry , organic chemistry , metallurgy , engineering
Abstract Synthesis gas produced through biomass gasification can be converted into H 2 ‐rich gas by catalytic methane decomposition or reforming reactions. In this study, we investigate the promotion of hydrogen production by the catalytic reforming of a model biomass‐gasification‐derived syngas over Ni/MAl 2 O 4 (M=Mg, Ni, and Ca) catalysts. Three mesoporous spinel supports were synthesized by solution combustion. Ni/NiAl 2 O 4 and Ni/CaAl 2 O 4 exhibited better catalytic activities and stabilities for syngas reforming than the other catalysts. These results are ascribable to interactions between the metallic catalyst and spinel supports, and stronger interactions lead to smaller catalyst particles. The formation of coke deposits is associated with CH 4 decomposition during the syngas reforming reaction. Clearly, H 2 production is lower at 900 °C because of increased competition from the reverse water–gas shift reaction that shifts the reaction between CO 2 and H 2 toward the generation of CO and H 2 O.