Issue 6, 2018

An efficient atom-economical chemoselective CO2 cycloaddition using lanthanum oxide/tetrabutyl ammonium bromide

Abstract

The cycloaddition reaction between carbon dioxide (CO2) and epoxides is an attractive example for the synthesis of value-added chemicals exploiting CO2 greenhouse emissions gas. In this study, we reported on propylene carbonate (PC) production mediated by a lanthanum oxide (La–O)/tetrabutyl ammonium bromide (TBAB) binary mixture. The effect of different reaction parameters including catalyst/co-catalyst loading, the amount of substrate, CO2 pressure, temperature, and reaction time was investigated. The binary catalytic system showed high catalytic conversion and selectivity. Catalyst reusability experiments indicated that the binary system was recyclable over five times without losing its activity/selectivity. In addition, a plausible reaction mechanism based on spectroscopic and kinetic measurements was presented, which was supported by density functional theory (DFT) calculations.

Graphical abstract: An efficient atom-economical chemoselective CO2 cycloaddition using lanthanum oxide/tetrabutyl ammonium bromide

Supplementary files

Article information

Article type
Paper
Submitted
26 Feb 2018
Accepted
05 Apr 2018
First published
06 Apr 2018

Sustainable Energy Fuels, 2018,2, 1342-1349

An efficient atom-economical chemoselective CO2 cycloaddition using lanthanum oxide/tetrabutyl ammonium bromide

A. K. Qaroush, F. A. Alsoubani, A. M. Al-Khateeb, E. Nabih, E. Al-Ramahi, M. F. Khanfar, K. I. Assaf and A. F. Eftaiha, Sustainable Energy Fuels, 2018, 2, 1342 DOI: 10.1039/C8SE00092A

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