期刊
ACS CATALYSIS
卷 6, 期 2, 页码 722-732出版社
AMER CHEMICAL SOC
DOI: 10.1021/acscatal.5b02594
关键词
catalysis; iron-based; water-gas shift; H2O; CO; CO2; H-2; high temperature; mechanism; promoters
资金
- National Science Foundation [CBET-1511689]
This article critically reviews the literature on iron-based catalysts for the high-temperature water-gas shift (HT-WGS) reaction. The reaction mechanism, reaction intermediates, rate-determining step, kinetics, active site, and promoters are covered. Unlike the low-temperature water-gas shift (LT-WGS) reaction by Cu/ZnO catalysts that has received intensive analysis with modern in situ and operando spectroscopy and DFT studies, the corresponding HT-WGS reaction by Fe-based catalysts still lacks a fundamental understanding because of the absence of modern catalysis studies of this important catalytic system. Given the role of the WGS catalysts on production of H-2 for a hydrogen economy, it is imperative that the fundamental molecular-level understanding of the HT-WGS catalyst be advanced.
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