DSpace
 

DSpace at IIT Bombay >
IITB Publications >
Article >

Please use this identifier to cite or link to this item: http://dspace.library.iitb.ac.in/jspui/handle/10054/1065

Title: A water soluble nanostructured platinum (0) metal catalyst from platinum carbonyl molecular clusters: synthesis, characterization and application in the selective hydrogenations of olefins, ketones and aldehydes
Authors: MAITY, PRASENJIT
BASU, SUSMIT
BHADURI, SUMIT
LAHIRI, GOUTAM KUMAR
Keywords: catalyst activity
hydrogenation
synthesis (chemical)
platinum compounds
solubility
Issue Date: 2007
Publisher: Elsevier
Citation: Journal of Molecular Catalysis A: Chemical 270(1-2), 117-122
Abstract: High nuclearity platinum carbonyl cluster anions (Chini's clusters) have been used as precursors to prepare a platinum nanocatalyst. The ionic polyelectrolyte poly(diallyldimethylammonium chloride) has been used as the support material for anchoring [Pt30(CO)60]2− via ion-pairing and subsequent stabilization of the nanoparticles. The polymer-supported material has been studied by spectroscopy (NIR, 13C NMR, and IR) and TEM before and after its use as a water soluble hydrogenation catalyst. The nanocatalyst is found to be effective for the chemoselective hydrogenation of olefinic, aldehydic and ketonic double bonds. For most of the substrates isolation of the product and reuse of the catalyst are extremely easy due to the automatic phase separation of the products from the catalyst. The spectral features of the fresh catalyst show retention of the carbonyl ligands and molecular identity of the parent cluster, but after use the carbonyl ligands appear to be lost. TEM of the supported material before and after use as a catalyst shows the presence of platinum nanoparticles with majority (≥70%) of the particles in the range of 2–6 nm. Smaller particles are dominant in the used catalyst and this observation is rationalized on the basis of the known reactivity of Chini's clusters with dihydrogen.
URI: http://dx.doi.org/10.1016/j.molcata.2007.01.039
http://hdl.handle.net/10054/1065
http://dspace.library.iitb.ac.in/xmlui/handle/10054/1065
ISSN: 1381-1169
Appears in Collections:Article

Files in This Item:

File Description SizeFormat
5258.pdf467.28 kBAdobe PDFView/Open
View Statistics

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

 

Valid XHTML 1.0! DSpace Software Copyright © 2002-2010  Duraspace - Feedback