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Alkylation of toluene with 1-hexene over macroreticular ion-exchange resins

Paper ID Volume ID Publish Year Pages File Format Full-Text
39561 45827 2014 6 PDF Available
Title
Alkylation of toluene with 1-hexene over macroreticular ion-exchange resins
Abstract

•The alkylation of toluene and 1-hexene was performed at 373 K over macroreticular resins.•Double bond isomerization, dimerization and mono-alkylation were the main reactions.•Neither skeletal isomerization nor cracking reactions were observed.•With a Ralkene/toluene = 1, selectivity to C12 dimers was 22% and to alkylates 45.5%.•Products can be used to boost naphtha streams in the refining industry directly.

The macroreticular acidic ion-exchange resins Amberlyst 35, Amberlyst 46 and Purolite CT 275 were investigated as catalysts for the alkylation of toluene with 1-hexene and simultaneous dimerization and isomerization of the olefin at 373 K. After six hours of reaction, 1-hexene conversion was complete. At low toluene concentration double-bound isomerization of 1-hexene was the main reaction. As toluene concentration increased, double-bond isomerization decreased and toluene alkylation and olefin dimerization reactions increased. By using Purolite CT 275 resin and for an almost equimolar toluene to 1-hexene ratio, the selectivity to dimers was 22%, that of mono- and di-alkylated compounds were 42% and 3.5%, respectively, while that of double-bound isomerization was 32.5%. These reactions catalyzed by macroreticular ion-exchange resins of high acid capacity and degree of crosslinking can be useful to boost naphtha streams in the refining industry by reducing volatile compounds and aromatics of low boiling point.

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Keywords
Alkylation; Dimerization; Toluene; 1-Hexene; Macroreticular ion-exchange resins
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Alkylation of toluene with 1-hexene over macroreticular ion-exchange resins
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 485, 5 September 2014, Pages 143–148
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