Efficient synthesis of acetic acid via Rh catalyzed methanol hydrocarboxylation with CO2 and H2 under milder conditions

被引：50

作者：

Cui, Meng ^{[1
,2
]}

Qian, Qingli ^{[1
]}

Zhang, Jingjing ^{[1
,2
]}

Chen, Chunjun ^{[1
,2
]}

Han, Buxing ^{[1
,2
]}

机构：

[1] Chinese Acad Sci, Inst Chem, Beijing Natl Lab Mol Sci,CAS Res Educ Ctr Excelle, CAS Key Lab Colloid Interface & Chem Thermodynam, Beijing 100190, Peoples R China

[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

来源：

GREEN CHEMISTRY | 2017年 / 19卷 / 15期

基金：

中国国家自然科学基金;

关键词：

CARBON-DIOXIDE; CARBOXYLIC-ACIDS; FORMIC-ACID; ORGANIC-SYNTHESIS; BUILDING-BLOCK; HYDROGENATION; CARBONYLATION; COMPLEX; HALIDES; ACTIVATION;

D O I：

10.1039/c7gc01391d

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Acetic acid is an important bulk chemical and synthesis of acetic acid via methanol hydrocarboxylation with CO2 and H-2 is a very promising route. In this work, we studied the reaction over a number of catalytic systems. It was found that Rh-2(CO)(4)Cl-2 with 4-methylimidazole (4-MI) as the ligand was very efficient in the presence of LiCl and LiI. Acetic acid began to form at 150 degrees C. The TOF was as high as 26.2 h(-1) and the yield of acetic acid could reach 81.8% at 180 degrees C. The catalytic system had obvious advantages, such as simplicity, high activity and selectivity, milder reaction conditions, and less corrosiveness. The excellent cooperation of CO and Cl-in Rh-2(CO)(4)Cl-2, suitable basicity and aromaticity of the ligand 4-MI, and the hydrogen bonding ability of Cl-were crucial for the outstanding performance of the catalytic system. The control experiments showed that the reaction did not proceed via the CO pathway.

引用

页码：3558 / 3565

页数：8

共 45 条

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