Mesoporous amine-modified SiO2 aerogel: a potential CO2 sorbent

Sheng Cui; Weiwei Cheng; Xiaodong Shen; Maohong Fan; Armistead (Ted) Russell; Zhanwu Wu; Xibin Yi

doi:10.1039/C0EE00442A

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Mesoporous amine-modified SiO₂ aerogel: a potential CO₂ sorbent†‡

Sheng Cui,^abc Weiwei Cheng,^ab Xiaodong Shen,*^ab Maohong Fan,*^dc Armistead (Ted) Russell,^c Zhanwu Wu^ab and Xibin Yi^ab

Author affiliations

* Corresponding authors

^a State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing University of Technology, Nanjing, PR China

^b College of Materials Science and Engineering, Nanjing University of Technology, Nanjing, PR China
E-mail: xdshen@njut.edu.cn
Fax: +86 02583221690
Tel: +86 02583587234

^c School of Civil and Environmental Engineering, Georgia Institute of Technology, Atlanta, GA, USA
E-mail: mfan3@mail.gatech.edu

^d Department of Chemical and Petroleum Engineering, University of Wyoming, Laramie, WY, USA
E-mail: mfan@uw.edu
Tel: +1 3077665633

Abstract

An amine-modified SiO₂ aerogel (AMSA) was prepared using the sol–gel method and supercritical drying technology. CO₂ adsorption tests were conducted under different conditions. High adsorption capacities were achieved in the presence of water vapor, with the highest CO₂ adsorption capacity of 6.97 mmol/g-sorbent at 25 °C. A novel adsorption mechanism associated with the CO₂ sorption process is proposed. The test results indicate that AMSA is a promising CO₂ adsorbent.

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Article information

DOI: https://doi.org/10.1039/C0EE00442A
Article type: Communication
Submitted: 15 Sep 2010
Accepted: 24 Feb 2011
First published: 05 May 2011

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Energy Environ. Sci., 2011,4, 2070-2074

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Mesoporous amine-modified SiO₂ aerogel: a potential CO₂ sorbent

S. Cui, W. Cheng, X. Shen, M. Fan, A. (. Russell, Z. Wu and X. Yi, Energy Environ. Sci., 2011, 4, 2070 DOI: 10.1039/C0EE00442A

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