Document Detail

Acid activated montmorillonite as catalysts in methyl esterification reactions of lauric Acid.
MedLine Citation:
PMID:  22975784     Owner:  NLM     Status:  In-Data-Review    
The catalytic activity of acid activated montmorillonite in the esterification of free fatty acids (FFA) is reported. Standard Montmorillonite (MMT) type STx-1 provided by the Clay Mineral Society repository was activated using phosphoric, nitric and sulphuric acids under different conditions and the resulting materials were characterized and evaluated as catalysts in the methyl esterification of lauric acid. Blank reactions carried out in the absence of any added catalyst presented conversions of 32.64, 69.79 and 79.23%, for alcohol:lauric acid molar ratios of 60:1, 12:1 and 6:1, respectively. In the presence of the untreated clay and using molar ratios of 12:1 and 6:1 with 12% of catalyst, conversions of 70.92 and 82.30% were obtained, respectively. For the acid activated clays, conversions up to 93.08% of lauric acid to methyl laurate were obtained, much higher than those observed for the thermal conversion or using untreated montmorillonite. Relative good correlations were observed between the catalytic activity and the development of acid sites and textural properties of the resulting materials. Therefore, a simple acid activation was able to improve the catalytic activity and produce clay catalysts that are environmental friendly, cost effective, noncorrosive and reusable.
Leandro Zatta; Luiz Pereira Ramos; Fernando Wypych
Related Documents :
7490214 - Bacillopeptins, new cyclic lipopeptide antibiotics from bacillus subtilis fr-2.
24064734 - Altitudinal variation of antioxidant components and capability in indocalamus latifoliu...
23457334 - Akt-dependent activation of the heart 6-phosphofructo-2-kinase/fructose-2,6-bisphosphat...
24412974 - A naphthalene-containing amino acid enables hydrogelation of a conjugate of nucleobase-...
7395764 - Effects of amino acid infusion and renal failure on the uptake and release of amino aci...
24442804 - Apical dominance in roots of pisum sativum l.
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Journal of oleo science     Volume:  61     ISSN:  1347-3352     ISO Abbreviation:  J Oleo Sci     Publication Date:  2012  
Date Detail:
Created Date:  2012-09-14     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101175339     Medline TA:  J Oleo Sci     Country:  Japan    
Other Details:
Languages:  eng     Pagination:  497-504     Citation Subset:  IM    
CEPESQ - Research Center in Applied Chemistry, Department of Chemistry, Federal University of Paraná
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

Previous Document:  Conjugated Linoleic Acids Inhibit Hypoxia Inducible Factor-1? Stabilization under Hypoxic Condition ...
Next Document:  Oxidative stability of glyceroglycolipids containing polyunsaturated Fatty acids.