聚乙烯吡咯烷酮稳定的钯纳米粒子催化加氢

催化学报 ›› 2008, Vol. 29 ›› Issue (11): 1165-1168.

聚乙烯吡咯烷酮稳定的钯纳米粒子催化加氢

Nelly ZAKARINA, Essen BEKTUROV

DV Sokolsky Institute of Organic Catalysis and Electrochemistry, 142 Kunaev str, Almaty, 050010, Kazakhstan; AB Bekturov Institute of Chemistry Sciences, 106 Ualikhanov str, Almaty, 050010, Kazakhstan

收稿日期:2008-11-25 出版日期:2008-11-25 发布日期:2012-08-17

Platinum Nanoparticles Stabilized by Polyvinylpyrrolidone for Hydrogenation

Nelly ZAKARINA, Essen BEKTUROV

DV Sokolsky Institute of Organic Catalysis and Electrochemistry, 142 Kunaev str, Almaty, 050010, Kazakhstan; AB Bekturov Institute of Chemistry Sciences, 106 Ualikhanov str, Almaty, 050010, Kazakhstan

Received:2008-11-25 Online:2008-11-25 Published:2012-08-17

摘要/Abstract

摘要： Nanosized colloidal platinum was prepared by reduction of H2PtCl6 in methanol-water mixture by refluxing. The particle size and morphology were characterized by transmission electron microscopy and electron diffraction. The influence of polyvinylpyrrolidone (PVP) molecular mass (MM), PVP concentration, and reduction time on platinum particle size was investigated. Small (1-2 nm) Pt particles are formed in the case of PVP with MM=1.2×104. With increasing polymer MM and decreasing polymer concentration, large aggregates from small particles appear. High catalytic activity of the obtained colloidal platinum in hydrogenation of acetylene compounds is shown. The effect of Pt particle size on the catalytic activity was studied.

关键词: colloid, platinum, polymer, polyvinylpyrrolidone, hydrogenation

Abstract: Nanosized colloidal platinum was prepared by reduction of H2PtCl6 in the pre sence of polyvinylpyrrolidone (PVP) in a methanol-water mixture by refluxing. T he sample showed high catalytic activity for acetylene hydrogenation. The PVP mo lecular mass, their concentration, and reduction time have effects on Pt particle size and catalytic activity.

Key words: colloid, platinum, polymer, polyvinylpyrrolidone, hydrogenation

Nelly ZAKARINA;Essen BEKTUROV. 聚乙烯吡咯烷酮稳定的钯纳米粒子催化加氢[J]. 催化学报, 2008, 29(11): 1165-1168.

Nelly ZAKARINA;Essen BEKTUROV. Platinum Nanoparticles Stabilized by Polyvinylpyrrolidone for Hydrogenation[J]. Chinese Journal of Catalysis, 2008, 29(11): 1165-1168.

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