期刊
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
卷 130, 期 43, 页码 14026-+出版社
AMER CHEMICAL SOC
DOI: 10.1021/ja805050c
关键词
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资金
- U.S. DOE [DE-AC03-76SF00098, DEAC02-05CH11231]
Well-defined platinum nanoparticles between 0.8 and 5.0 nm were prepared using dendrimer and polymer capping agents and supported onto mesoporous SBA-15 silica. Using these model catalysts, pyrrole hydrogenation was demonstrated to be structure sensitive because ring opening occurred more easily over larger particles compared to smaller ones. The phenomenon is caused by surface roughness or electronic effects that change with particle size.
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