Pd Cluster Nanowires as Highly Efficient Catalysts for Selective Hydrogenation Reactions

Palladium is a key catalyst invaluable to many industrial processes and fine‐chemical synthesis. Although recent progress has allowed the synthesis of Pd nanoparticles with various shapes by using different techniques, the facile synthesis of Pd nanocrystals and turning them into a highly active, se...

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Bibliographic Details
Published in:Chemistry : a European journal 2012-02, Vol.18 (9), p.2639-2645
Main Authors: Zhang, Zhi-Cheng, Zhang, Xin, Yu, Qi-Yu, Liu, Zhi-Chang, Xu, Chun-Ming, Gao, Jin-Sen, Zhuang, Jing, Wang, Xun
Format: Article
Language:English
Subjects:
Aqueous solutions
butadiene
Catalysis
Catalysts
Chemistry
cinnamaldehyde
Clusters
Hydrogenation
Nanoparticles
Nanoparticles - chemistry
nanostructures
Nanotechnology
Nanowires
Nanowires - chemistry
Palladium
Palladium - chemistry
selective hydrogenation
Surface Properties
Synthesis
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Summary:Palladium is a key catalyst invaluable to many industrial processes and fine‐chemical synthesis. Although recent progress has allowed the synthesis of Pd nanoparticles with various shapes by using different techniques, the facile synthesis of Pd nanocrystals and turning them into a highly active, selective, and stable catalyst systems still remain challenging. Herein, we report the highly selective one‐pot synthesis of monodisperse Pd cluster nanowires in aqueous solution; these consist of interconnected nanoparticles and may serve as highly active catalysts because of the enrichment of high index facets on the surface, including {443}, {331}, and {221} steps. For the first time, carbon nanotube and γ‐Al2O3 immobilized Pd cluster nanowires showed highly enhanced catalytic performance in the liquid‐phase selective hydrogenation of cinnamaldehyde and gas‐phase hydrogenation of 1,3butadiene relative to immobilized Pd icosahedra and nanocubes, as well as commercial Pd catalysts. Power in the cluster: Monodisperse Pd cluster nanowires, which consist of interconnected nanoparticles (see figure), have been synthesized in aqueous solution and may serve as highly active catalysts due to the enrichment of high index facets on the surface. Carbon nanotube and γ‐Al2O3 immobilized Pd cluster nanowires showed enhanced catalytic performance in hydrogenations reactions.
ISSN:0947-6539
1521-3765
DOI:10.1002/chem.201102903