Enhanced C₂ oxygenate synthesis by CO hydrogenation over Rh-based catalyst supported on a novel SiO₂

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• 作者：Jun Yu ; Dongsen Mao ; ^{dsmao@sit.edu.cn} ; Guanzhong Lu ; Qiangsheng Guo ; Lupeng Han
• 关键词：SiO2 ; Rh&ndash ; Mn&ndash ; Li catalyst ; CO hydrogenation ; C2 oxygenates
• 刊名：Catalysis Communications
• 出版年：2012
• 期刊代码：12_15667367
• 类别：ce
• 出版时间：5 July, 2012
• 卷：24
• 期：Complete
• 页码：25-29
• 文件大小：570 K

摘要

A novel SiO₂ synthesized by the St枚ber method was studied as the support for Rh-Mn-Li catalyst, and better performance for C₂ oxygenate synthesis via CO hydrogenation was achieved compared with the counterpart using commercial SiO₂ as the support. The investigation based on the catalytic performance and characterizations of the catalysts suggests that the hydroxyl-metal interaction over the catalyst supported on SiO₂ prepared by the St枚ber method results in a change in the CO adsorption on Rh particles, which promotes the CO dissociation and CO insertion, leading to higher CO conversion and C₂ oxygenate selectivity.