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Synthesis of Mesoporous Palladium Nanoparticles and Its Application in Heck Reaction

In our study, 3D interconnection channels of mesoporous silica MCM-48 was used as template. We try to fill the channels with the metal precussor by ¡§incipient wetness¡¨ technique. After the reduction with H2, the composites containning metal Pd and MCM-48 could be obtained. Then, Pd nanowire network was obtained through HF etching.
The mesoporous palladium nanoparticles are obtained and we try to use it as the catalyst in the Heck coupling reaction of £\-methylstyrene and p-bromoacetophenone. We find that our catalyst have different effect in this Heck reaction. The terminal and internal (E/Z form) isomer ratio variated in the reaction. In the future, we will attempt to apply our mesoporous Palladium nanoparticles as organic molecule storage.
The MCM-48 and mesoporous Palladium nanoparticles were characterized by transmission electron microscopy (TEM), X-ray diffraction (XRD), scanning electron microscopy (SEM) and high-resolution nitrogen adsorption.We used NMR and GC to trace the reaction. Heck reaction was performed as a test reaction to compare catalytic performances of the meosoporous Palladium nanoparticles and the catalyst of refrence.

Identiferoai:union.ndltd.org:NSYSU/oai:NSYSU:etd-0120109-233351
Date20 January 2009
CreatorsLi, Jheng-Guang
ContributorsHsiu-Wei Chen, Teng-Yuan Dong, Liang-Shiu Lee, Chin-Hsing Chou
PublisherNSYSU
Source SetsNSYSU Electronic Thesis and Dissertation Archive
LanguageCholon
Detected LanguageEnglish
Typetext
Formatapplication/pdf
Sourcehttp://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0120109-233351
Rightsnot_available, Copyright information available at source archive

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