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Ultra-low palladium catalysts for phenylacetylene semihydrogenation: Synthesis by modified pulsed laser ablation–deposition

Paper ID Volume ID Publish Year Pages File Format Full-Text
40128 45844 2013 8 PDF Available
Title
Ultra-low palladium catalysts for phenylacetylene semihydrogenation: Synthesis by modified pulsed laser ablation–deposition
Abstract

•Pd nanocatalysts are prepared by modified pulsed ablation–deposition method.•The Pd particles’ size and distribution are controlled by the plasma properties.•Pd catalysts show excellent activity in the semihydrogenation of phenylacetylene.

Pulsed laser ablation–deposition (PLA–PLD) in inhomogeneous electrical and electromagnetic fields was used to synthesise supported Pd catalysts. A modified PLA–PLD method opens up opportunities for obtaining Pd nanoparticles with the size from 2 to 5 nm by varying the deposition conditions. The catalysts were investigated by transmission electron microscopy (TEM) and X-ray photoelectron spectroscopy (XPS). The content of metal in catalysts was ultra-low (0.011–0.016 wt%). The catalysts demonstrated unexpectedly high activity for phenylacetylene semihydrogenation (TOFv 18–55 s−1, TOFs 41–224 s−1) at the Pd/substrate molar ratio less than 1/100 000 and styrene selectivity up to 93%.

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Keywords
Heterogeneous egg-shell catalysts; Palladium nanoparticles; Phenylacetylene semihydrogenation; Pulsed laser ablation–deposition; Ultra-low precious metal content
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Ultra-low palladium catalysts for phenylacetylene semihydrogenation: Synthesis by modified pulsed laser ablation–deposition
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volumes 464–465, 15 August 2013, Pages 253–260
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
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Any Questions? feel free to contact us