期刊
JOURNAL OF PHYSICAL CHEMISTRY C
卷 114, 期 19, 页码 8828-8836出版社
AMER CHEMICAL SOC
DOI: 10.1021/jp1014934
关键词
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资金
- Direccion General de Investigacion Cientifica y Tecnica of Spain [MAT2006-14274-C02-01]
By partial exchange of surface protons of a polyoxometalate (POM; H(5)PO(40)V(2)Mo(10)) by an ionic liquid (IL; butylmethylimidazolium, bmim(+)), a protonic IL-POM ([bmim](4)HPO(40)V(2)Mo(10)) was obtained. Further exchange of this material with Pd(2+) yields a final solid that HRTEM and EXAFS-XANES techniques show to be formed by very regular nanoparticles of NO with similar to 2 nm diameter, which are supported on 1 pm particles of IL-POM hybrid material. The NO nanoparticles can be easily reduced to Pd, and the resultant material is an active and selective catalyst for the Heck reaction. The catalyst can be recycled, though metal leaching occurs in polar solvents. This can be an interesting material for performing Pd-catalyzed reactions in nonpolar solvents or for working in gas-phase reactions.
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