Adsorption of Carbon Dioxide on Aminosilane-modified Mesoporous Silica

Aminosilane-modified mesoporous silica was prepared by grafting various aminosilanes on mesoporous silica, SBA-15, and the applicability as a novel adsorbent for CO2 capture and separation from flue gases was examined. Pore walls of SBA-15 were modified uniformly with aminosilanes by grafting and re...

Full description

Saved in:
Bibliographic Details
Published in:Journal of the Japan Petroleum Institute 2005, Vol.48(1), pp.29-36
Main Authors: Hiyoshi, Norihito, Yogo, Katsunori, Yashima, Tatsuaki
Format: Article
Language:English
Subjects:
Aminosilane modified SBA-15
Applied sciences
Carbon dioxide adsorption
Crude oil, natural gas and petroleum products
Energy
Exact sciences and technology
Fuels
Mesoporous silica adsorbent
Water tolerant adsorbent
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Aminosilane-modified mesoporous silica was prepared by grafting various aminosilanes on mesoporous silica, SBA-15, and the applicability as a novel adsorbent for CO2 capture and separation from flue gases was examined. Pore walls of SBA-15 were modified uniformly with aminosilanes by grafting and relatively high surface area and uniform pore size were retained. Adsorption capacities of CO2 in the presence of water were compared with those in the absence of water by a flow method. Adsorption capacities of aminosilane-modified SBA-15 were comparable in the presence and absence of water vapor. In particular, the adsorption capacity of (3-trimethoxysilylpropyl)diethylenetriamine SBA-15 reached 1.2 mmol·g−1 in the presence of water vapor at 333 K, which is comparable to the adsorption capacity of zeolite Na-Y in the absence of water vapor. In addition, these adsorbents were completely regenerated by heating to 423 K in a He flow.
ISSN:1346-8804
1349-273X
DOI:10.1627/jpi.48.29