Abstract
AbstractThis article provides a critical review of Ni‐based catalysts employed in high temperature and ultra‐high temperature water gas shift reaction (WGS) for hydrogen production and methane suppression. The promotional role of nature and type of active metal and support for WGS reaction is discussed with respect to activity and selectivity. This review mainly covers the recent strategic catalytic formulations like promotion with alkali metals, alloying with another metal and core@‐shell‐like structures for suppressing methanation during WGS reaction. The change in nature and strength of CO adsorption over modified Ni‐surfaces is discussed using available in situ CO‐DRIFTS results. The various WGS reaction and CO methanation pathways are also presented together with insights gained from computational DFT studies.
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