Sm掺杂 CeO₂/C 复合物的制备及其对二氧化碳加甲醇生成碳酸二甲酯性能的影响研究

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中图分类号：TQ225.5 文献标志码：A 文章编号：2095-2945（2025）20-0075-04

Abstract： Compounding cerium oxide （ceO2） with carbon is an effective means to optimize the chemical environment around catalyticactivesites.Inthispaper，theefectofSmelementcontentonthecatalyticactivityofcarbon-cerumoxidecomposie 1 CeO2/C ）wasinvestigated. The results showed that the space-time yield of the 3% Sm-CeO/C catalyst was ashigh as 4.06 mmol/gcat at a pressure of 6.9MPa and a temperature of 140‰ for 2 hours.Combined with material characterization，it was foundthatSmdopingcouldinducethegenerationofoxygenvacancies（O.）inthecatalyst，furterimprovingtheactivityof the catalyst.

Keywords： DMC; CeO2/C composite; doping modification; oxygen vacancy; catalytic activity

随着工业的快速发展， CO2 排放量逐年递增，由此引发的大气污染问题已成为当前亟需应对的关键环境挑战。（剩余5333字）