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n-Heptane isomerization over Pt/WO3-ZrO2: A kinetic study

Paper ID Volume ID Publish Year Pages File Format Full-Text
42498 45928 2009 9 PDF Available
Title
n-Heptane isomerization over Pt/WO3-ZrO2: A kinetic study
Abstract

Kinetics of n-C7 isomerization was investigated over Pt loaded WO3-ZrO2 using a fixed-bed reactor under hydrogen pressure and the effect of reaction conditions on the activity of the catalyst towards n-C7 isomerization and product selectivity was studied. The study shows that the cracked products appear mainly from di-branched isomers of heptane. By controlling the reaction conditions, the octane number of the feed was increased from 0 to 32 with 93% fuel volume recovery. The major product among the mono-branched isomers was 3-methyhexane while 2,3-dimethylpentane was dominant among di-branched isomers. Craking products consisted mainly of propane and isobutane which were produced from dimethylpentanes. Simplified kinetic models were developed based on the reaction conditions. The apparent kinetic parameters for mono-isomerization (M), di-isomerization (D) and cracking (C) reactions were estimated using nonlinear regression analysis. The apparent activation energies were found to decrease as follows: EC > EM > ED.

Graphical abstractIsomerization of n-C7 was studied over Pt/WO3-ZrO2 using a fixed-bed reactor under hydrogen pressure. The study shows that the cracked products appear mainly from di-branched isomers of heptane. By controlling the reaction conditions, the octane number of the feed was increased from 0 to 32 with 93% fuel volume recovery. Simplified kinetic models were developed based on the reaction conditions. The apparent activation energies were found to decrease as follows: EC > EM > ED.Figure optionsDownload full-size imageDownload as PowerPoint slide

Keywords
n-Heptane isomerization; Platinum promoted tungstated zirconia; Fixed-bed reactor; Kinetic modeling
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n-Heptane isomerization over Pt/WO3-ZrO2: A kinetic study
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 368, Issues 1–2, 31 October 2009, Pages 56–64
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
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Full-text PDF Download
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Any Questions? feel free to contact us