氢甲酰化
丙烯
钴
催化作用
铑
烯烃纤维
金属
烯烃
合成气
化学
无机化学
材料科学
有机化学
作者
Zhengtian Pu,Jiankang Zhao,Hujun Yin,Jin Zhao,Xinlong Ma,Jie Zeng
出处
期刊:Nano Letters
[American Chemical Society]
日期:2023-12-05
标识
DOI:10.1021/acs.nanolett.3c03667
摘要
Currently, the hydroformylation of short olefins is operated almost exclusively by using Rh catalysts. Considering the high cost and scarcity of rhodium resources, it is important to develop non-noble metal catalysts toward hydroformylation. Herein, we report an efficient cobalt-based catalyst rich in interfacial sites between metallic and oxidized cobalt species for the hydroformylation of short olefin, propene, under a moderate syngas pressure. The catalyst exhibited a high specific activity of 252 mol molCo–1 h–1 in toluene under 2 bar of propene and 40 bar of CO/H2 mixed gas (CO/H2 = 1:1) at 160 °C. According to mechanistic studies, the interface of metallic and oxidized cobalt species promoted the adsorption of CO and propene. Moreover, the interfacial sites lowered the energy barrier for CO* hydrogenation and C–C coupling compared with metallic cobalt.
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