CO2 hydrogenation to formate catalyzed by highly stable and recyclable carbene-iridium under mild condition

被引：21

作者：

Zhou, Lei ^{[1
]}

Yao, Chenfei ^{[1
]}

Ma, Wentao ^{[1
]}

Hu, Jinling ^{[1
]}

Wu, Youting ^{[1
]}

Zhang, Zhibing ^{[1
]}

Hu, Xingbang ^{[1
]}

机构：

[1] Nanjing Univ, Sch Chem & Chem Engn, Nanjing 210093, Peoples R China

来源：

JOURNAL OF CO2 UTILIZATION | 2021年 / 54卷

基金：

中国国家自然科学基金;

关键词：

Carbon dioxide; Hydrogenation; Cyclic (alkyl)(amino)carbenes iridium; Metal-hydride; Formate; CARBON-DIOXIDE HYDROGENATION; DEFINED IRON CATALYST; FORMIC-ACID; COMPLEXES; REDUCTION; METHANOL; COBALT; ACTIVATION; RHODIUM; NANOPARTICLES;

D O I：

10.1016/j.jcou.2021.101769

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The catalytic reactivity of the metal center to H2 and the stability of the metal-hydride intermediate are vital for enhancing the CO2 hydrogenation efficiency. It was found that polymerization can bring a highly hydrophobic and stable 1,5-cyclooctadiene-iridium(I) chloride anchored on polymerized cyclic (alkyl)(amino)carbenes (PCAAC-Ir), which can protect the reactive Ir-H intermediates and the catalyst itself. Above properties makes the PCAAC-Ir superior to the un-polymerized one for the CO2 hydrogenation to formate. Up to 195,600 TON can be achieved, being 38.7 times higher than that of the un-polymerized CAAC-Ir. Besides, the CO2 hydrogenation catalyzed by P-CAAC-Ir performs quite well in water, whereas that catalysed by un-polymerized CAAC-Ir does work under the same condition. In addition, the polymerized catalyst can be easily recycled without significant loss of activity.

引用

页数：6

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