Amine modified, micro-mesoporous matrices for CO2 retention: effect of occluded templates on performance

ELENA I. BASALDELLA; M. SOLEDAD LEGNOVERDE; ESTHER N. PONZI; JUAN C. TARA; NORBERTO FIRPO; EDGARDO L. SOTO

Studies in Surface Science and Catalysis. Zeolites and Related Materials: Trends, Targets and Challenges

Elsevier

Lugar: Paris; Año: 2008; p. 619 - 622

A new research area devoted to the exploration of different CO2 capture technologiesinvolves the use of novel adsorbents. The purpose of this study is to develop adsorbentswhich have a tailored surface functionality for improved CO2 adsorption. We havesynthesized two types of porous matrices: SBA-15 silica and MCM-22 zeolite.Different quantities of amine groups were incorporated into these ordered materialsusing post-synthesis impregnation. Our results show that high capacities were obtainedusing the impregnated samples. Occluded template and amino groups favor theadsorption on SBA-15, meanwhile the best results using MCM-22 were obtainedimpregnating the free-template samples. In these samples, approximately 90% of theCO2 adsorption occurred almost instantaneously, and was removed just as rapidly atroom temperature with an inert gas flow.