| Determination of structural modification in acid activated montmorillonite clay by FT-IR spectroscopy. | |
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MedLine Citation:
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PMID: 16635584 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The structural modifications and the Bronsted acid sites generated during the acid treatment of montmorillonite clay with varied concentration of sulphuric acid was determined using FT-IR spectroscopy. Octahedral sheet is affected at low acid concentration resulting into the dissolution of cations; among them Mg2+ cations are prone to dissolve than Fe2+/3+ and Al3+. Tetrahedral sheet is affected at higher acid concentration. The partial substitution of octahedral Al3+ by Mg2+ or Fe2+/3+ cations and the presence of other non-smectite minerals such as kaolinites was also been clearly identified, thus making FT-IR spectroscopy as a rapid technique for monitoring the structural features of montmorillonite clay. |
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Authors:
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Beena Tyagi; Chintan D Chudasama; Raksh V Jasra |
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Publication Detail:
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Type: Journal Article Date: 2006-04-24 |
Journal Detail:
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Title: Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy Volume: 64 ISSN: 1386-1425 ISO Abbreviation: Spectrochim Acta A Mol Biomol Spectrosc Publication Date: 2006 May |
Date Detail:
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Created Date: 2006-05-10 Completed Date: 2006-08-21 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9602533 Medline TA: Spectrochim Acta A Mol Biomol Spectrosc Country: England |
Other Details:
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Languages: eng Pagination: 273-8 Citation Subset: IM |
Affiliation:
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Department of Silicates and Catalysis Discipline, Central Salt and Marine Chemicals Research Institute (CSMCRI), G.B. Marg, 364 002 Bhavnagar, Gujarat, India. btyagi@csmcri.org |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Aluminum Silicates
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chemistry* Bentonite / chemistry* Silicates / chemistry Spectroscopy, Fourier Transform Infrared Sulfuric Acids / chemistry* |
| Chemical | |
Reg. No./Substance:
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0/Aluminum Silicates; 0/Silicates; 0/Sulfuric Acids; 12199-37-0/Smectite; 1302-78-9/Bentonite; 1302-87-0/clay; 7664-93-9/sulfuric acid |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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