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Mechanistic kinetics of catalytic oxidation of 1-butanethiol in light oil sweetening

Paper ID Volume ID Publish Year Pages File Format Full-Text
55212 47043 2012 6 PDF Available
Title
Mechanistic kinetics of catalytic oxidation of 1-butanethiol in light oil sweetening
Abstract

In the present study the kinetics of liquid phase oxidation of light thiols using novel cobalt phthalocyanine sulphonamide catalyst developed indigenously was investigated in a semi batch reactor. 1-Butanethiol was chosen to represent thiols in lighter range of petroleum fractions like liquefied petroleum gas and light straight run naphtha. Rate data was collected under experimental conditions representing industrial conditions. Effects of process parameters like catalyst concentration and initial feed mercaptan concentration on reaction rates were investigated. A mechanism based rate expression was deduced to explain the observed behavior. Its parameters estimated using Line weaver plots and further fine tuned by using optimization technique. The effective rate law represented a first order kinetics which explained the observed experimental phenomenon reasonably well for commonly encountered industrial conditions.

Graphical abstractFigure optionsDownload full-size imageDownload high-quality image (43 K)Download as PowerPoint slideHighlights► Cobalt phthalocyanine sulphonamide catalyst (CoPSc) has been found more active and stable than commercial catalyst. ► Kinetics of catalytic oxidation of light thiols using a novel CoPSc catalyst was investigated. ► A mechanism based rate expression was used to explain the observed rate behavior at higher RSH feed concentration and its parameters estimated. ► Optimum catalyst CoPSc dosage was established as 200 ppm. ► A linear rate expression was proposed for industrial scale oxidizer design.

Keywords
Thiol; Sweetening; Cobalt phthalocyanine sulfonamide catalyst; Line weaver plot; Michaelis–Menten kinetics
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Mechanistic kinetics of catalytic oxidation of 1-butanethiol in light oil sweetening
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Today - Volume 198, Issue 1, 30 December 2012, Pages 246–251
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us