Hydrodechlorination of 1,1-Dichlorotetrafluoroethane over Pd/Al2O3 Catalyst. Effect of Hydrogen Pressure and Catalyst Pretreatment

• Autorzy: Karpiński Z. , d’Itri J. L.
• Języki publikacji: EN

Abstrakty

EN

An alumina-supported palladium catalyst has been studied in CF3CFCl2 hydrodechlorination at 100 graduate C using a static-circulation system. At higher partial pressures of H2, when the existence of the beta-PdH phase is awaited, the reaction occurs similarly as at lower hydrogen pressures. This indicates that either the beta-PdH formation does not have any special effect on active sites of this reaction, or the presence of CF3CFCl2 in the system inhibits this phase transformation. Various pretreatments of the 2 wt.% Pd/Al2O3 influence markedly its catalytic behavior. In particular, reoxidation and subsequent low temperature reduction of the catalyst, prereduced at 600°C, generates a very high activity, however, the selectivity towards CF3CFH2 is not much altered.

• Wydawca: Polskie Towarzystwo Chemiczne
• Czasopismo: Polish Journal of Chemistry
• Rocznik: 2000
• Tom: Vol. 74, nr 10
• Strony: 1421--1421
• Opis fizyczny: –1425, Bibliogr. 19 poz., rys.

Twórcy

autor

Karpiński Z.

autor

d’Itri J. L.

• Department of Catalysis on Metals, Institute of Physical Chemistry, Polish Academy of Sciences, ul. Kasprzaka 44/52, 01-224 Warszawa, Poland