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Influence of the Brønsted acidity, SiO2/Al2O3 ratio and Rh–Pd content on the ring opening. Part II. Selective ring opening of methylcyclohexane

Paper ID Volume ID Publish Year Pages File Format Full-Text
40207 45845 2014 9 PDF Available
Title
Influence of the Brønsted acidity, SiO2/Al2O3 ratio and Rh–Pd content on the ring opening. Part II. Selective ring opening of methylcyclohexane
Abstract

•Methylcyclohexane ring opening using Rh–Pd supported on SiO2/Al2O3 was studied.•Total and the Brønsted acidity have a higher influence on the activity for decalin ring opening than for single ring opening.•The influence of the metal charge is more important on the reaction of MCH.•All the catalysts display a high MCH conversion which increases with the reaction temperature.•Catalysts with Rh/Pd = 2 and monometallic Rh1 supported on SIRAL 40 has the highest yield to ring opening products.

Monometallic and bimetallic Pd–Rh catalysts with various Rh/Pd atomic ratios (=0.5, 1 and 2) and a total metal charge of 1 wt% supported on SiO2–Al2O3 (SIRAL 40, 20, 5) were studied for the ring opening of methylcyclohexane (MCH). The results were compared with those obtained previously for ring opening of decalin. It was found that the total acidity and the Brønsted acidity of the support have a higher influence on the activity for ring opening of naphthenic bicycles than on the activity for opening single rings. The influence of the metal charge is more important on the reaction of MCH. All the catalysts display a high MCH conversion, which increases with the reaction temperature. The bimetallic catalyst with the Rh/Pd ratio equal to 2 and supported on SIRAL 40 has the highest yield to ring opening products.

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Keywords
Ring opening; Brønsted acidity; Bimetallic catalysts; Rh–Pd; Bifunctional catalysts; Methylcyclohexane; Decalin
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Influence of the Brønsted acidity, SiO2/Al2O3 ratio and Rh–Pd content on the ring opening. Part II. Selective ring opening of methylcyclohexane
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 469, 17 January 2014, Pages 541–549
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
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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
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