A process for the preparation of 1,1,1,2-tetrafluoroethane

Details A process for the preparation of 1,1,1,2-tetrafluoroethane A process for the preparation of 1,1,1,2-tetrafluoroethane

C - Chemistry, Metallurgy

07

C

C07C 17/21 (2006.01) B01J 23/26 (2006.01) B01J 37/03 (2006.01) C07C 17/20 (2006.01) C07C 19/08 (2006.01)

Patent

CA 2403117

The invention relates to a process for preparing a co-precipitated Cr2O3/Al2O3 catalyst promoted by zinc, said process comprising co-precipitation of chromium and aluminum metal hydroxides from corresponding trivalent metal salt solutions using NH4OH, NaOH or KOH as a base and followed by calcination to give mixed oxide precatalyst in amorphous form which is impregnated with an activity promoting amount of Zinc compound. The catalyst is used for the preparation of HFL-134a by fluorination of trichloroethylene and fluorination of the intermediate product of the former reaction (HCFC-133A).

L'invention concerne un procédé de préparation d'un catalyseur de Cr203/Al203 coprécipité favorisée par le zinc. Ce procédé consiste à coprécipiter des hydroxydes de chrome et de métal d'aluminium à partir de solutions de sel de métal trivalent, à l'aide de NH4OH, NaOH, ou KOH sous forme d'une base, puis à les calciner pour obtenir un précatalyseur d'oxyde mélangé sous forme amorphe. Ce dernier est imprégné d'une quantité de zinc favorisant l'activité. Ce catalyseur est utilisé pour préparer du HFL-134a par fluoration de trichloroéthylène et fluoration du produit intermédiaire de la réaction préalable (HCFC-133a).

Affiliated with

Also associated with

Rating

A process for the preparation of 1,1,1,2-tetrafluoroethane does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with A process for the preparation of 1,1,1,2-tetrafluoroethane, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A process for the preparation of 1,1,1,2-tetrafluoroethane will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1439945