An efficient ternary catalyst ZnBr2/K2CO3/[Bmim]Br for chemical fixation of CO2 into cyclic carbonates at ambient conditions

Content Provider	Semantic Scholar
Author	Zhang, Huizi Kong, Xianqiang Cao, Changsheng Pang, Guangsheng Shi, Yanhui
Copyright Year	2016
Abstract	Abstract A simple, readily available and recyclable ternary catalytic system of ZnBr2/K2CO3/[Bmim]Br was developed for the efficient conversion of CO2 and epoxides (both internal and terminal epoxides) to cyclic carbonates under very mild conditions (room temperature, 1 atm) with excellent yields (>90% for 18 examples). The catalytic activity would not be affected by CO2 in the presence of small amount of water and air. The reactions would even be carried out under CO2 partial pressure as low as 0.5 atm, giving carbonate in good yield. This process has been repeated 5 times without any obvious decrease in catalytic activity. The influences of the type of catalyst, catalyst loading, CO2 pressure, reaction time, and temperature on the reaction yields have been investigated. The possible reaction mechanism was proposed based on the reaction results.
Starting Page	76
Ending Page	82
Page Count	7
File Format	PDF HTM / HTML
DOI	10.1016/j.jcou.2016.03.001
Volume Number	14
Alternate Webpage(s)	https://daneshyari.com/article/preview/63545.pdf
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article