Abstract：
:The kinetics of epoxidation of cottonseed oil by peroxyacetic acid generated in situ from hydrogen peroxide and glacial acetic acid in the presence of liquid inorganic acid catalysts were studied. It was possible to obtain up to 78% relative conversion to oxirane with very less oxirane cleavage by in situ technique. The rate constants for sulphuric acid catalysed epoxidation of cottonseed oil were in the range 0.39-5.4 x 10(-6)L mol(-1)s(-1) and the activation energy was found to be 11.7 kcal mol(-1). Some thermodynamic parameters such as enthalpy, entropy, and free energy of activation were determined to be of 11.0 kcal mol(-1), -51.4 cal mol(-1)K(-1) and 28.1 kcal mol(-1), respectively. The order of effectiveness of catalysts was found to be sulphuric acid>phosphoric acid>nitric acid>hydrochloric acid. Acetic acid was found to be superior to formic acid for the in situ cottonseed oil epoxidation.
journal_name
Bioresour Technoljournal_title
Bioresource technologyauthors
Dinda S,Patwardhan AV,Goud VV,Pradhan NCdoi
10.1016/j.biortech.2007.07.015subject
Has Abstractpub_date
2008-06-01 00:00:00pages
3737-44issue
9eissn
0960-8524issn
1873-2976pii
S0960-8524(07)00563-9journal_volume
99pub_type
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