Please use this identifier to cite or link to this item: http://nopr.niscair.res.in/handle/123456789/32851
Title: Synthesis of 2,3,3,3-tetrafluoropropene by catalytic dehydrofluorination of 1,1,1,3,3-pentafluoropropane over Ni-Cr2O3 catalyst
Authors: Wang, Fang
Liang, Yan
Zhang, Wen-Xia
Wang, Yue-Juan
Lu, Ji-Qing
Luo, Meng-Fei
Keywords: Catalysts;Nickel catalysts;Dehydrofluorination;Nickel;Nickel acetate;Chromium;Pentafluoropropane;Tetrafluoropropene
Issue Date: Oct-2015
Publisher: NISCAIR-CSIR, India
Abstract: 2,3,3,3-Tetrafluoropropene (HFO-1234yf) has been synthesized from 1,1,1,3,3-pentafluoropropane (HFC-245fa) by dehydrofluorination over a series of Ni-Cr2O3 catalysts. HFC-245fa could be readily dehydrofluorinated to HFO-1234yf and 1,3,3,3-tetrafluoropropene (HFO-1234ze) over these catalysts. Characterization results reveal that the Ni species in the catalysts is mainly metallic. Ammonia temperature-programmed desorption results indicate that the surface acidity is enhanced with increasing Ni contents in the catalysts, which is responsible for the increased selectivity towards HFO-1234yf. The formation of carbon during the reaction led to the coverage of surface acidic sites, which accounted for the decrease of the selectivity to HFO-1234yf.
Page(s): 1192-1197
URI: http://hdl.handle.net/123456789/32851
ISSN: 0975-0975(Online); 0376-4710(Print)
Appears in Collections:IJC-A Vol.54A(10) [October 2015]

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