Synthesis of mesoporous materials SBA-15 and CMK-3 from fly ash and their application for CO2 adsorption

A supernatant solution of silicate species extracted from coal fly ash in a power plant by alkali fusion was used in acidic condition to prepare a mesoporous silica SBA-15. The SBA-15 was used as a template for the synthesis of a mesoporous carbon CMK-3 using sucrose as a carbon source. Characteriza...

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Bibliographic Details
Published inJournal of porous materials Vol. 16; no. 5; pp. 545 - 551
Main Authors Chandrasekar, Govindasamy, Son, Won-Jin, Ahn, Wha-Seung
Format Journal Article
LanguageEnglish
Published Boston Springer US 01.10.2009
Springer Nature B.V
Subjects
Catalysis
Characterization and Evaluation of Materials
Chemistry
Chemistry and Materials Science
Physical Chemistry
Power plants
Silica
Fly ash
Alkali fusion
CMK-3
Carbon dioxide adsorption
SBA-15
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Summary:A supernatant solution of silicate species extracted from coal fly ash in a power plant by alkali fusion was used in acidic condition to prepare a mesoporous silica SBA-15. The SBA-15 was used as a template for the synthesis of a mesoporous carbon CMK-3 using sucrose as a carbon source. Characterization of the produced mesoporous materials by XRD, N 2 adsorption-desorption, SEM, and TEM confirmed the formation of well-ordered hexagonal mesostructures. Textural properties were found close to those prepared by pure chemicals. SBA-15 after polyethyleneimine impregnation and CMK-3 were tested for carbon dioxide adsorption, successfully demonstrating the possibility of recycling the industrial waste product in a power plant into a useful adsorbent.
ISSN:1380-2224
1573-4854
DOI:10.1007/s10934-008-9231-x