The research status of Cu-based cata-lysts and the reaction mechanism of carbon dioxide hydrogenation to methanol were reviewed with 50 references.The effect of water on catalysts during carbon dioxide reaction was analyzed,and the modi-fication technology of Cu-based catalysts for hy-drothermal stability was elaborated in terms of the design of catalyst components,the design of mi-crostructures,and the design of the reaction device.It was also pointed out that the optimization of the preparation process,and the regulation of the reac-tion process,and the development of hydrophobic modification technology,and the development of new types of reactor were the directions of improvement for the solution of the deactivation of Cu-based cata-lysts.
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