Issue 7, 2012

Silicon oxynitrides of KCC-1, SBA-15 and MCM-41 for CO2 capture with excellent stability and regenerability

Abstract

We report the use of silicon oxynitrides as novel adsorbents for CO2 capture. Three series of functionalized materials based on KCC-1, SBA-15 and MCM-41 with Si–NH2 groups were prepared using a simple one-step process via thermal ammonolysis using ammonia gas, and they demonstrated excellent CO2 capture capabilities. These materials overcome several limitations of conventional amine-grafted mesoporous silica. They offer good CO2 capture capacity, faster adsorption–desorption kinetics, efficient regeneration and reuse, more crucially excellent thermal and mechanical stability even in oxidative environments, and a clean and green synthesis route, which allows the overall CO2 capture process to be practical and sustainable.

Graphical abstract: Silicon oxynitrides of KCC-1, SBA-15 and MCM-41 for CO2 capture with excellent stability and regenerability

Supplementary files

Article information

Article type
Edge Article
Submitted
20 Mar 2012
Accepted
01 May 2012
First published
10 May 2012

Chem. Sci., 2012,3, 2224-2229

Silicon oxynitrides of KCC-1, SBA-15 and MCM-41 for CO2 capture with excellent stability and regenerability

U. Patil, A. Fihri, A. Emwas and V. Polshettiwar, Chem. Sci., 2012, 3, 2224 DOI: 10.1039/C2SC20356A

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