Document Detail

Determination of structural modification in acid activated montmorillonite clay by FT-IR spectroscopy.
MedLine Citation:
PMID:  16635584     Owner:  NLM     Status:  MEDLINE    
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.
Beena Tyagi; Chintan D Chudasama; Raksh V Jasra
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Publication Detail:
Type:  Journal Article     Date:  2006-04-24
Journal Detail:
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:
Created Date:  2006-05-10     Completed Date:  2006-08-21     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9602533     Medline TA:  Spectrochim Acta A Mol Biomol Spectrosc     Country:  England    
Other Details:
Languages:  eng     Pagination:  273-8     Citation Subset:  IM    
Department of Silicates and Catalysis Discipline, Central Salt and Marine Chemicals Research Institute (CSMCRI), G.B. Marg, 364 002 Bhavnagar, Gujarat, India.
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MeSH Terms
Aluminum Silicates / chemistry*
Bentonite / chemistry*
Silicates / chemistry
Spectroscopy, Fourier Transform Infrared
Sulfuric Acids / chemistry*
Reg. No./Substance:
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

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