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Preparation of Pt Catalysts for 2-propanol Dehydrogenation using Sol-gel Method  

Lee, Yeong-Kweon (JSR Micro Korea Co., Lrd.)
Lee, Hwaung (Clean Technology Center, KIST)
Song, Hyung Keun (Clean Technology Center, KIST)
Na, Byung-Ki (School of Chemical Engineering, Chungbuk National University)
Publication Information
Korean Chemical Engineering Research / v.45, no.4, 2007 , pp. 328-334 More about this Journal
Abstract
Chemical heat pump system of 2-propanol/acetone/hydrogen is most suitable to the recovery of waste heat of power plant. various types of 5 wt% Pt-alumina catalysts were prepared for 2-propanol dehydrogenation using sol-gel method. The characteristics and the dehydrogenation reaction rate of each catalyst were investigated. Pt-alumina xerogel catalyst has excellent reaction rate and good durability in comparison with the existing alumina supported Pt catalysts. Pt-alumina aerogel catalyst had the highest reaction rate in all prepared catalysts, but sufficient aging time was necessary to maintain its reaction rate. A potential advantage of the aerogel catalyst is the fact that the high temperature heat treatment is not required. Without heat treatment or with low temperature heat treatment, the Pt-alumina aerogel catalyst has excellent reaction rate as well as durability and this gives us the economic advantage. Alumina xerogel supported Pt catalyst prepared by incipient wetness method showed good reaction rate, and had good mechanical strength. Blank alumina xerogel prepared by sol-gel method can be used for the support of metal catalysts.
Keywords
Sol-gel Method; 2-Propanol Dehydrogenation; Pt Catalyst; Chemical Heat Pump;
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