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Citation: Fu Xiangkai, Ma Xuebing, Wen Shuying. Hydrogenation Activity of Zirconium Phosphite-Polyvinylpyrrolidone-Palladium Catalyst[J]. Chinese Journal of Applied Chemistry, ;1998, 15(1): 17-21. shu

Hydrogenation Activity of Zirconium Phosphite-Polyvinylpyrrolidone-Palladium Catalyst

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

Received Date: 18 April 1997
Revised Date: 15 September 1997

Zirconium phosphite-polyvinylpyrrolidone (Zr(HPO₃)₂·H₂O-PVP) supporter and corresponding palladium catalysts were prepared and characterized by IR, TG, DTA, BET surface area and XPS measurements, The immobilized PVP on the supporter amounted to 41 to 51 gram per mol Zr(HPO₃)₂·H₂O. The Zr(HPO₃)₂·H₂O-PVP-Pd catalysts exhibit high activities: 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 the catalyst with Zr(HPO₄)₂·H₂O-PVP-Pd is also described.
- zirconium phosphite-polyvinylpyrrolidone,
- palladium catalyst,
- hydrogenation,
- catalytic activity,
- characterization
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