Development of Carbon-Based “Molecular Basket” Sorbent for CO2 Capture

Ind. Eng. Chem. Res., 2012, 51 (7), pp 3048–3057
Development of Carbon-Based “Molecular Basket” Sorbent for CO₂ Capture
Dongxiang Wang†, Xiaoliang Ma†‡*, Cigdem Sentorun-Shalaby†, and Chunshan Song*†
maxiaoliang@kisr.edu.kw
csong@psu.edu
† Clean Fuels and Catalysis Program, EMS Energy Institute and Department of Energy and Mineral Engineering, Pennsylvania State University, 209 Academic Projects Building, University Park, Pennsylvania 16802, United States
‡ Petroleum Research & Studies Center, Kuwait Institute for Scientific Research, P.O. Box 24885 Safat, 13109 Kuwait
Abstract
Describes development a new type of “molecular basket” sorbent (MBS) by using inexpensive and commercially available carbon materials instead of mesoporous silica molecular sieves as supports for CO₂ capture from flue gas.
Several commercial carbon materials, including activated carbons and carbon blacks, with different pore sizes and pore volumes were used to prepare the carbon-based MBS (CB-MBS) by loading the CO₂-philic polyethylenimine (PEI) on them. The CO₂ sorption performance of the prepared CB-MBS was evaluated by using a thermogravimetric analyzer and a fixed-bed flow sorption system. Effects of the pore properties of the carbon supports, PEI loading amount, sorption temperature, and moisture on the sorption capacity were examined.
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