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Issue 7, 2012
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Silicon oxynitrides of KCC-1, SBA-15 and MCM-41 for CO2 capture with excellent stability and regenerability

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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

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Supplementary files

Article information


Submitted
20 Mar 2012
Accepted
01 May 2012
First published
10 May 2012

Chem. Sci., 2012,3, 2224-2229
Article type
Edge Article

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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