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Auto-thermal reforming of acetic acid for hydrogen production by Zn_(x)Ni_(y)CrO_(m±δ) catalysts:Effect of Cr promoted Ni-Zn intermetallic compound
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作者 xuanyi jia Xiaomin Hu +3 位作者 Qiao Wang Baiquan Chen Xingyue Xie Lihong Huang 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2022年第3期216-221,共6页
A series of Zn_(x)Ni_(y)CrO_(m±δ)catalysts were synthesized via a typical co-precipitation method,in which Zn-Cr layered double hydroxides(LDHs)were found and Ni-Zn intermetallic compound(IMC)was formed after re... A series of Zn_(x)Ni_(y)CrO_(m±δ)catalysts were synthesized via a typical co-precipitation method,in which Zn-Cr layered double hydroxides(LDHs)were found and Ni-Zn intermetallic compound(IMC)was formed after reduction in hydrogen.During auto-thermal reforming(ATR)of acetic acid(HAc),the Ni-Zn IMC was transformed into Ni/(amorphous-ZnO)-ZnCr_(2)O_(4) species with uniformed distribution and appropriate interaction within these Ni-Zn-Cr-O species;besides,the adsorbed oxygen promoted the activation and transfer of oxygen species;therefore,deactivation by oxidation,sintering and coking was inhibited.And the optimized Zn_(2.37)Ni_(0.63)CrO_(4.5±δ)catalyst presented high activity and stability in a 45-h ATR test with HAc conversion near 100%and hydrogen yield at 2.7 mol-H_(2)/mol-HAc,showing potential for hydrogen production via ATR of HAc. 展开更多
关键词 Ni-Zn intermetallic compound Zn-Cr layered double hydroxide Hydrogen production Auto-thermal reforming Biomass CATALYSIS
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