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Methylcyclopentane transformation on Ge–Rh bimetallic catalysts prepared by organometallic grafting

Paper ID Volume ID Publish Year Pages File Format Full-Text
52711 46882 2007 7 PDF Available
Title
Methylcyclopentane transformation on Ge–Rh bimetallic catalysts prepared by organometallic grafting
Abstract

Ge–Rh/Al2O3 catalysts were prepared by organometallic grafting, with nominal Ge loadings of 1/8, 1/4, 1/2 and 1 monolayer and actual loading of 300, 600, 2000 and 2100 ppm. The dispersion decreased proportionally to the Ge loading up to 600 ppm Ge. Methylcyclopentane was used as catalytic test reaction. The selectivity of ring opening was 70–90%. Addition of 300 and 600 ppm Ge divided the contiguous Rh sites to smaller ensembles. Here mostly 2-methylpentane gave C1–C5 fragments, its surface intermediate undergoing fragmentation without desorption, like on Rh with D < 60–70%. More Ge (2000 ppm) divided further Rh and also may have penetrated into subsurface layers. Here all primary ring opening products gave fragments, similarly to small Rh particles.

Keywords
Rh; Ge–Rh catalysts; Rhodium; Methylcyclopentane ring opening; Organometallic grafting
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Methylcyclopentane transformation on Ge–Rh bimetallic catalysts prepared by organometallic grafting
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 8, Issue 4, April 2007, Pages 686–692
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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