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Stabilized Rh0-nanoparticles-Montmorillonite clay composite: Synthesis and catalytic transfer hydrogenation reaction

Paper ID Volume ID Publish Year Pages File Format Full-Text
40012 45842 2014 6 PDF Available
Title
Stabilized Rh0-nanoparticles-Montmorillonite clay composite: Synthesis and catalytic transfer hydrogenation reaction
Abstract

•Montmorillonite clay is activated with mineral acid to generate nanopores of desired dimension.•Rh0-nanoparticles are generated into the modified Montmorillonite clay.•The supported Rh0-nanoparticles are found excellent catalyst in transfer hydrogenation of carbonyl compounds to corresponding alcohols.•The used catalyst is recyclable for several catalytic runs without significant lost in activity.

Rh0-nanoparticles of around 5 nm size distributed homogeneously into the nanopores of acid activated Montmorillonite clay were generated by incipient wetness impregnation of RhCl3, followed by reduction with ethylene glycol. Acid activation of the Montmorillonite clay was carried out by treating with H2SO4 under controlled condition to increase the surface area by generating nanopores upto about 10 nm sizes, which act as a host and stabilize nanoparticles into the pores. The synthesized Rh0-nanoparticles-clay composites characterized by PXRD, SEM-EDX, HRTEM, XPS and N2-adsorption confirm generation of Rh0-nanoparticle below 5 nm size and fully reduced to metallic state. The supported metal nanoparticles serve as efficient heterogeneous catalyst for reduction of some important aromatic carbonyl compounds leading to corresponding alcohols through transfer hydrogenation up to 100% conversion (GC) and selectivity, where isopropanol was used as both solvent and reductant. The catalyst remained active for several runs without significant loss of its catalytic activities.

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Keywords
Rh0-nanoparticles; Acid activated Montmorillonite; Nanopores; Transfer hydrogenation; Reduction
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Stabilized Rh0-nanoparticles-Montmorillonite clay composite: Synthesis and catalytic transfer hydrogenation reaction
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 470, 30 January 2014, Pages 355–360
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