%0 Journal Article
%T ¾ÛÒÒÏ©ßÁ¿©ÍéͪÎȶ¨µÄîÙÄÉÃ×Á£×Ó´ß»¯¼ÓÇâ
%A Nelly ZAKARINA
%A Essen BEKTUROV
%J ´ß»¯Ñ§±¨
%P 1165-1168
%D 2008
%X £¿NanosizedcolloidalplatinumwaspreparedbyreductionofH2PtCl6inmethanol-watermixturebyrefluxing.Theparticlesizeandmorphologywerecharacterizedbytransmissionelectronmicroscopyandelectrondiffraction.Theinfluenceofpolyvinylpyrrolidone(PVP)molecularmass(MM),PVPconcentration,andreductiontimeonplatinumparticlesizewasinvestigated.Small(1-2nm)PtparticlesareformedinthecaseofPVPwithMM=1.2¡Á104.WithincreasingpolymerMManddecreasingpolymerconcentration,largeaggregatesfromsmallparticlesappear.Highcatalyticactivityoftheobtainedcolloidalplatinuminhydrogenationofacetylenecompoundsisshown.TheeffectofPtparticlesizeonthecatalyticactivitywasstudied.
%K colloid
%K platinum
%K polymer
%K polyvinylpyrrolidone
%K hydrogenation
%U http://www.chxb.cn/CN/abstract/abstract17336.shtml