期刊
ACS APPLIED MATERIALS & INTERFACES
卷 6, 期 11, 页码 8807-8816出版社
AMER CHEMICAL SOC
DOI: 10.1021/am501528a
关键词
hydrogenation; Pd catalysis; hybrid-materials; amine-modified silica; dendrimers
资金
- Russian Foundation for Basic Research [110300817]
- National Science Foundation [CHE 1049569]
- Division Of Chemistry
- Direct For Mathematical & Physical Scien [1049569] Funding Source: National Science Foundation
New heterogeneous hydrogenation catalysts, based on Pd nanoparticles and polypropyleneimine (PPI) dendrimers of the third generation that have been covalently grafted to a silica surface modified with polyallylamine (PAA) have been synthesized. The final products were characterized by TEM, XPS, and solid-state NMR spectroscopy. The synthesized materials are effective catalysts for selective hydrogenation of dienes to monoenes and phenyl acetylene to styrene at very high substrate/Pd ratios with turnover rates higher than related Pd nanoparticle catalysts. The synthesized catalysts can be reused without any loss of activity in the case of styrene and isoprene.
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