| X-ray studies of carbon dioxide intercalation in Na-fluorohectorite clay at near-ambient conditions. | |
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MedLine Citation:
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PMID: 22221040 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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We show experimentally that gaseous CO<sub>2</sub> intercalates into the interlayer space of the synthetic smectite clay Na-fluorohectorite at conditions not too far from ambient. The mean interlayer repetition distance of the clay when CO<sub>2</sub> is intercalated is found to be for the conditions 20 °C and 15 bar. The magnitude of the expansion of the interlayer upon intercalation is indistinguishable from that observed in the dehydrated-monohydrated transition for H<sub>2</sub>O, but the possibility of water intercalation is ruled out by a careful analysis of the experimental conditions and repeating the measurements exposing the clay to nitrogen gas. The dynamics of the process is observed to be dependent on the pressure, with a higher intercalation rate at increased pressure. The rate of CO<sub>2</sub> intercalation at the studied conditions is found to be several orders of magnitude slower than the intercalation rate of water or humidity at ambient pressure and temperature. |
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Authors:
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Henrik Hemmen; Erlend Granbo Rolseth; Davi de Miranda Fonseca; Elisabeth Lindbo Hansen; Jon Otto Fossum; Tomás S Plivelic |
Publication Detail:
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Type: JOURNAL ARTICLE Date: 2012-1-5 |
Journal Detail:
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Title: Langmuir : the ACS journal of surfaces and colloids Volume: - ISSN: 1520-5827 ISO Abbreviation: - Publication Date: 2012 Jan |
Date Detail:
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Created Date: 2012-1-6 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9882736 Medline TA: Langmuir Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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