Effects of Ir content on selective hydrogenation of crotonaldehyde over Ir/ZrO₂ catalysts

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• 作者：Lin Zhu ; Geng-Shen Hu ; Ji-Qing Lu ; Guan-Qun Xie ; Ping Chen ; Meng-Fei Luo ; ^{mengfeiluo@zjnu.cn}
• 关键词：Ir/ZrO2 catalyst ; Crotonaldehyde hydrogenation ; Crotyl alcohol ; Lewis acid sites
• 刊名：Catalysis Communications
• 出版年：2012
• 期刊代码：12_15667367
• 类别：ce
• 出版时间：5 May, 2012
• 卷：21
• 期：Complete
• 页码：5-8
• 文件大小：494 K

摘要

A series of Ir/ZrO₂ catalysts with different Ir contents were tested for gas phase selective hydrogenation of crotonaldehyde. It was found that the reactivity of the catalyst increased with increasing Ir content, but rapid deactivation was observed on all the catalysts during the reaction, which might be due to CO poisoning generated by decarbonylation reaction. The highest selectivity (82.2%) to crotyl alcohol was obtained over a catalyst with 3%Ir content, which was attributed to the proper Ir particle size and the highest amount of surface acid sites in the catalyst.