Catalytic activity and reaction mechanism of CO2 hydrogenation to methanol catalyzed by solid solution
CHEN Zhiyuan
WANG Yuning
ZHOU Jiabin
GONG Jiesong
HUANG Zhenhui
AI Zhao
LI Dongfang
GAO Wengui
Abstract：Solid solution catalyst has good catalytic activity in the study of CO2 hydrogenation to methanol,due to its changes of features like solid solution strengthening,lattice distortion and solid solution structure.Solid solution strength-ening can effectively improve the thermal stability of the catalyst,so that it can maintain stable catalytic performance un-der high temperature and high pressure conditions.Lattice distortion can adjust the electronic structure and surface active site of the catalyst,enhance the interfacial structural interaction and promote the adsorption and activation of reactant mo-lecules.The solid solution structure can create more oxygen vacancies and form bimetallic site synergistic effect,which makes the key intermediate of the reaction more stable in the process of activating CO2 at high temperature,so as to effect-ively inhibit the generation of CO.The controversy on the mechanism of CO2 hydrogenation to methanol mainly focuses on two intermediates:formate species(HCOO*)and carboxyl group species(COOH*).Among them,solid solution cata-lysts are more inclined to formate mechanism,which considers formate(HCOO*)and methoxy(CH3O*)as key interme-diates in the reaction.Gallium zirconium,indium zirconium and zinc zirconium are the three most common solid solution catalysts.The catalytic activity and reaction mechanism of these three catalysts are summarized.Finally,the problems ex-isting in the field of CO2 hydrogenation of solid solution catalyst to methanol are discussed and prospected.
Keywords：solid solution catalystCO2 hydrogenation to methanolreaction mechanismcatalytic activitymodifica-tion research
Publication Date：2025-07-31
Online Publishing Date：2025-08-22(First online date of this platform, not the publication date of the document)
Pages：15( 3602-3616 )