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Title: Alkylation of toluene with 1-hexene over macroreticular ion-exchange resins
Author: Cadenas, Madelin
Bringue Tomás, Roger
Fité Piquer, Carles
Iborra Urios, Montserrat
Ramírez, Eliana
Cunill García, Fidel
Keywords: Resines de bescanvi iònic
Ion exchange resins
Issue Date: 11-Aug-2014
Publisher: Elsevier B.V.
Abstract: 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.
Note: Versió postprint del document publicat a:
It is part of: Applied Catalysis A-General, 2014, vol. 485, p. 143-148
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ISSN: 0926-860X
Appears in Collections:Articles publicats en revistes (Enginyeria Química i Química Analítica)

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