Hydrogenation Activity of Zirconium Phosphite-Polyvinylpyrrolidone-Palladium Catalyst

Chinese Journal of Applied Chemistry ›› 1998, Vol. 0 ›› Issue (1): 17-21.

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Hydrogenation Activity of Zirconium Phosphite-Polyvinylpyrrolidone-Palladium Catalyst

Fu Xiangkai, Ma Xuebing, Wen Shuying

College of Chemistry and Chemical Engineering, Southwest-ChinaNormal University, Chongqing 400715

Received:1997-04-18 Revised:1997-09-15 Published:1998-02-10 Online:1998-02-10

Abstract

Abstract: Zirconium phosphite-polyvinylpyrrolidone (Zr(HPO₃)₂·H₂O-PVP) supporter andcorresponding palladium catalysts were prepared and characterized by IR, TG, DTA, BETsurface area and XPS measurements, The immobilized PVP on the supporter amounted to 41to 51 gram per mol Zr(HPO₃)₂·H₂O.The Zr(HPO₃)₂·H₂O-PVP-Pd catalysts exhibit highactivities: in hydrogenation of 7 tested substituted olefins and nitrobenzene under atmospher-ic pressure the conversions were above 97.3%.The influences of crystallization time, Pd %,VP unit/Pd ratio, catalyst amount used in the hydrogenation, reaction temperature, sol-vents, pH of the media and substractes on the catalytic activity were examined.The cata-lysts can be used for 15 times without serious loss of the activity.The comparation of thecatalyst with Zr(HPO₄)₂·H₂O-PVP-Pd is also described.

Key words: zirconium phosphite-polyvinylpyrrolidone, palladium catalyst, hydrogenation, catalytic activity, characterization

Fu Xiangkai, Ma Xuebing, Wen Shuying. Hydrogenation Activity of Zirconium Phosphite-Polyvinylpyrrolidone-Palladium Catalyst[J]. Chinese Journal of Applied Chemistry, 1998, 0(1): 17-21.

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Hydrogenation Activity of Zirconium Phosphite-Polyvinylpyrrolidone-Palladium Catalyst

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