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Effects of alkaline additives on conversion of 2,4,5-trichlorophenol over Pd-Rh/C catalysts

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Title Effects of alkaline additives on conversion of 2,4,5-trichlorophenol over Pd-Rh/C catalysts
 
Creator Pozan, Gülin Selda
 
Subject Hydrodechlorination
2,4,5-Trichlorophenol
Pd/Rh/C catalyst
Alkaline additives
 
Description 52-57
Effects of alkaline additives on conversion of 2,4,5-trichlorophenol (TCP) over Pd-Rh/C catalysts were studied at 80ºC and 1 Atm. The catalysts were prepared by incipient wetness impregnation of carbon support and characterized by BET surface area, temperature programmed reduction (TPR) and X-ray diffraction (XRD) methods. The dechlorination of TCP occurs mainly via two pathways: hydrodechlorination and hydrolysis. The dechlorination of TCP can be accelerated significantly by alkalis. The addition of alkali had increasing effect on the initial reaction rate, conversion and crystallite size of Pd. The initial TCP dechlorination activity without alkali was found to be in the following order: 0.97%Pd/C>0.8%Pd/0.19%Rh/C>0.98%Rh/C. The selectivities of mono and di-chlorophenol were also improved with
Pd/C catalyst.
 
Date 2009-02-19T11:03:35Z
2009-02-19T11:03:35Z
2009-01
 
Type Article
 
Identifier 0971–457X
http://hdl.handle.net/123456789/3215
 
Language en_US
 
Publisher CSIR
 
Source IJCT Vol.16(1) [January 2009]