SCI和EI收录∣中国化工学会会刊

中国化学工程学报 ›› 2022, Vol. 43 ›› Issue (3): 216-221.DOI: 10.1016/j.cjche.2021.04.017

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Auto-thermal reforming of acetic acid for hydrogen production by ZnxNiyCrOm±δ catalysts: Effect of Cr promoted Ni-Zn intermetallic compound

Xuanyi Jia1, Xiaomin Hu1, Qiao Wang1, Baiquan Chen1, Xingyue Xie1, Lihong Huang1,2   

  1. 1. Department of Chemical and Pharmaceutical Engineering, Chengdu University of Technology, Chengdu 610059, China;
    2. Richard G. Lugar Center for Renewable Energy, Indiana University-Purdue University, Indianapolis, IN 46202, United States
  • 收稿日期:2020-07-09 修回日期:2021-04-06 出版日期:2022-03-28 发布日期:2022-04-28
  • 通讯作者: Lihong Huang,E-mail:huanglihong06@cdut.cn
  • 基金资助:
    This work was supported by International Cooperation Program from Sichuan Science and Technology Program (Nos. 2019YFH0181, 2015HH0013) and the National Natural Science Foundation of China (No. 21276031).

Auto-thermal reforming of acetic acid for hydrogen production by ZnxNiyCrOm±δ catalysts: Effect of Cr promoted Ni-Zn intermetallic compound

Xuanyi Jia1, Xiaomin Hu1, Qiao Wang1, Baiquan Chen1, Xingyue Xie1, Lihong Huang1,2   

  1. 1. Department of Chemical and Pharmaceutical Engineering, Chengdu University of Technology, Chengdu 610059, China;
    2. Richard G. Lugar Center for Renewable Energy, Indiana University-Purdue University, Indianapolis, IN 46202, United States
  • Received:2020-07-09 Revised:2021-04-06 Online:2022-03-28 Published:2022-04-28
  • Contact: Lihong Huang,E-mail:huanglihong06@cdut.cn
  • Supported by:
    This work was supported by International Cooperation Program from Sichuan Science and Technology Program (Nos. 2019YFH0181, 2015HH0013) and the National Natural Science Foundation of China (No. 21276031).

摘要: A series of ZnxNiyCrOm±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)-ZnCr2O4 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 Zn2.37Ni0.63CrO4.5±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-H2/mol-HAc, showing potential for hydrogen production via ATR of HAc.

关键词: Ni-Zn intermetallic compound, Zn-Cr layered double hydroxide, Hydrogen production, Auto-thermal reforming, Biomass, Catalysis

Abstract: A series of ZnxNiyCrOm±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)-ZnCr2O4 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 Zn2.37Ni0.63CrO4.5±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-H2/mol-HAc, showing potential for hydrogen production via ATR of HAc.

Key words: Ni-Zn intermetallic compound, Zn-Cr layered double hydroxide, Hydrogen production, Auto-thermal reforming, Biomass, Catalysis