Effects of Ir content on selective hydrogenation of crotonaldehyde over Ir/ZrO2 catalysts
Effects of Ir content on selective hydrogenation of crotonaldehyde over Ir/ZrO2 catalysts
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DOI：
10.1016/j.catcom.2012.01.019
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发表时间：
2012-05
影响因子：
3.7
通讯作者：
Lin Zhu;Gengshen Hu;Jiqing Lu;Guanqun Xie;Ping Chen;M. Luo
中科院分区：
文献类型：
--
作者：
Lin Zhu;Gengshen Hu;Jiqing Lu;Guanqun Xie;Ping Chen;M. Luo
考察了一系列不同铱含量的铱/氧化锆催化剂对丁烯醛气相选择加氢的影响。结果表明，催化剂的活性随Ir含量的增加而增加，但在反应过程中，催化剂均发生了快速失活，这可能是由于脱羰反应产生的CO中毒所致。当催化剂中铱含量为3%时，巴豆醇的选择性最高（82.2%），这归因于催化剂中合适的铱颗粒尺寸和最高的表面酸中心数量。
A series of Ir/ZrO2catalysts 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.