期刊
JOURNAL OF NANOPARTICLE RESEARCH
卷 16, 期 4, 页码 1-10出版社
SPRINGER
DOI: 10.1007/s11051-014-2366-6
关键词
Palladium; Nanoparticles; Oxidation; Agglomeration; Ionic liquid; Nanostructured catalysts
资金
- University Grants Commission-New Delhi
The search for more efficient catalytic systems that might combine the advantages of both homogenous (catalyst modulation) and heterogenous catalysis (catalyst recycling) is still the challenge of modern chemistry. With the advent of nanochemistry, it has been possible to prepare soluble analogues of heterogenous catalysts. These nanoparticles are generally stabilized against aggregation into larger less active particles by electrostatic or steric protection. In the present case, we demonstrate the use of room temperature ionic liquids (ILs) as effective agents of dispersion of palladium nanoparticles (prepared from palladium chloride with 5 +/- A 0.5 nm size distribution) that are recyclable catalysts for aerobic oxidation of alcohols under mild conditions. The particles suspended in ILs show no metal agglomeration or loss of catalytic activity even on prolonged use. An attempt has been made to elucidate the reaction mechanism of aerobic alcohol oxidation using a soluble palladium catalyst.
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