The Canadian Journal of Chemical Engineering, Early View (Online Version
of Record published before inclusion in an issue), Article first published
online: 30 APR 2012
Adsorption microcalorimetry applied to the
characterisation of adsorbents for CO2 capture
F. Wilton Miranda da Silva 1
Débora A. Soares Maia 2
Ronan S. Oliveira 1
Juan Carlos Moreno-Piraján 3
Karim Sapag 2
Célio L. Cavalcante 1
Giorgio Zgrablich 2
Diana C. S. Azevedo 1
diana@gpsa.ufc.br
1 Grupo de Pesquisa em Separações por Adsorção (GPSA), Department of Chemical
Engineering, Universidade Federal do Ceará, Campus Universitário do Pici, Bl.
709, 60455-760 Fortaleza, CE, Brazil
2 Instituto de Física Aplicada (INFAP/CONICET), Universidad Nacional de San
Luis, San Luis, Argentina
3 Grupo de Investigación en Sólidos Porosos y Calorimetría, Departamento de
Química, Universidad de Los Andes, Bogotá, Colombia
Abstract
Results suggest that amino groups may be
blocking some physisorption sites, leading to restricted chemisorption on the
outer surface. The primary contribution
of this study is the simultaneous measurement of adsorption isotherms and
respective differential enthalpy curves for amine-impregnated adsorbents, which
may be considered a fingerprint of the modified surface chemistry.
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