Intercalation of CO2 Selected by Type of Interlayer Cation in Dried Synthetic Hectorite
Source abstract
Abstract
High Resolution Image Download MS PowerPoint Slide Clay minerals are abundant in caprock formations for anthropogenic storage sites for CO 2, and they are potential capture materials for CO 2 postcombustion sequestration. We investigate the response to CO 2 exposure of dried fluorohectorite clay intercalated with Li +, Na +, Cs +, Ca 2+, and Ba 2+ . By in situ powder X-ray diffraction, we demonstrate that fluorohectorite with Na +, Cs +, Ca 2+, or Ba 2+ does not swell in response to CO 2 and that Li-fluorohectorite does swell. A linear uptake response is observed for Li-fluorohectorite by gravimetric adsorption, and we relate the adsorption to tightly bound residual water, which exposes adsorption sites within the interlayer. The experimental results are supported by DFT calculations.
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Research context
OpenAlex topics: Clay minerals and soil interactions · CO2 Sequestration and Geologic Interactions · High-pressure geophysics and materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Department of Physics, Norwegian University of Science and Technology, N-7491 Trondheim, Norway
Helmholtz-Zentrum-Berlin, 14109 Berlin, Germany
Departamento de Física dos Materiais e Mecânica, Instituto de Física, Universidade de São Paulo, 05508-090 São Paulo, SP Brazil
Institute for Energy Technology (IFE), 2007 Kjeller, Norway
Bavarian Polymer Institute and Department of Chemistry, University of Bayreuth, 95447 Bayreuth, Germany
Universidade Federal do ABC (UFABC), Av. dos Estados, 5001 - Santa Terezinha, Santo André, SP CEP 09210-580, Brazil
Funding
Norges Forskningsr?d · Deutsche Forschungsgemeinschaft · Conselho Nacional de Desenvolvimento Cient?fico e Tecnol?gico · Funda??o Amaz?nia Paraense de Amparo ? Pesquisa · Norges Teknisk-Naturvitenskapelige Universitet · Research Centre for Gas Innovation
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