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Issue 8, 2016
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Bromide promoted hydrogenation of CO2 to higher alcohols using Ru–Co homogeneous catalyst

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Abstract

Iodides are commonly used promoters in C2+OH synthesis from CO2/CO hydrogenation. Here we report the highly efficient synthesis of C2+OH from CO2 hydrogenation over a Ru3(CO)12–Co4(CO)12 bimetallic catalyst with bis(triphenylphosphoranylidene)ammonium chloride (PPNCl) as the cocatalyst and LiBr as the promoter. Methanol, ethanol, propanol and isobutanol were formed at milder conditions. The catalytic system had a much better overall performance than those of reported iodide promoted systems because PPNCl and LiBr cooperated very well in accelerating the reaction. LiBr enhanced the activity and PPNCl improved the selectivity, and thus both the activity and selectivity were very high when both of them were used simultaneously. In addition, the catalyst could be reused for at least five cycles without an obvious change of catalytic performance.

Graphical abstract: Bromide promoted hydrogenation of CO2 to higher alcohols using Ru–Co homogeneous catalyst

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Supplementary files

Article information


Submitted
23 Mar 2016
Accepted
17 Apr 2016
First published
18 Apr 2016

This article is Open Access
All publication charges for this article have been paid for by the Royal Society of Chemistry

Chem. Sci., 2016,7, 5200-5205
Article type
Edge Article

Bromide promoted hydrogenation of CO2 to higher alcohols using Ru–Co homogeneous catalyst

M. Cui, Q. Qian, Z. He, Z. Zhang, J. Ma, T. Wu, G. Yang and B. Han, Chem. Sci., 2016, 7, 5200
DOI: 10.1039/C6SC01314G

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