Please use this identifier to cite or link to this item: http://nopr.niscair.res.in/handle/123456789/3215
Title: Effects of alkaline additives on conversion of 2,4,5-trichlorophenol over Pd-Rh/C catalysts
Authors: Pozan, Gülin Selda
Keywords: Hydrodechlorination
2,4,5-Trichlorophenol
Pd/Rh/C catalyst
Alkaline additives
Issue Date: Jan-2009
Publisher: CSIR
Abstract: 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.
Description: 52-57
URI: http://hdl.handle.net/123456789/3215
ISSN: 0971–457X
Appears in Collections:IJCT Vol.16(1) [January 2009]

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