Titaniun-vanadium-tin comprising catalyst and process for...

Details Titaniun-vanadium-tin comprising catalyst and process for... Titaniun-vanadium-tin comprising catalyst and process for...

B - Operations, Transporting

01

J

B01J 23/22 (2006.01) C07C 51/265 (2006.01) C07C 51/31 (2006.01) B01J 23/00 (2006.01)

Patent

CA 2489556

Disclosed are catalytic compositions comprising oxides of titanium, vanadium and tin which are suitable for the production of phthalic anhydride by oxidizing o-xylene and/or napthalene in the gas phase. The catalysts exibit excellent activity and selectivity. The catalyst comprise 2 to 15% by weight (calculated as V2O5) of vanadium, from 1 to 15% by weight (calculated as SnO2) of tin and further comprise from 70 to 97% by weight (calculated as TiO2) of titanium. In a preferred embodiment the catalyst of the invention comprise up to 5% by weight (calculated as M2O) of at least one alkali metal, preferably lithium, potassium or rubidium, and more preferrably cesium. In an even more preferred embodiment, cesium is present in an amount of from 0.01 to 2% by weight (calculated as Cs2O).

Cette invention concerne des compositions catalytiques renfermant des oxydes de titane, de vanadium et d'étain pouvant être utilisées pour produire de l'anhydride phtalique par l'oxydation d'o-xylène et/ou de naphtalène en phase gazeuse. Les catalyseurs présentent une excellente activité et une excellente sélectivité. Ces catalyseurs renferment entre 2 et 15 % en poids (calculé en tant que V¿2?O¿5?) de vanadium,¿ ?entre 1 et 15 % en poids (calculé en tant que SnO¿2?) d'étain¿ ?et entre 70 et 97 % en poids (calculé en tant que TiO¿2?) de titane.¿ ?Dans un mode de réalisation préféré de cette invention, les catalyseurs comprennent jusqu'à 5 % en poids (calculé en tant que M¿2?O) d'au moins un métal alcalin, de préférence du lithium, du potassium ou du rubidium, mieux encore du césium. Idéalement, la quantité de césium présente est comprise entre 0,01 et 2 % en poids (calculé en tant que Cs¿2?O).

Affiliated with

Also associated with

Rating

Titaniun-vanadium-tin comprising catalyst and process for... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Titaniun-vanadium-tin comprising catalyst and process for..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Titaniun-vanadium-tin comprising catalyst and process for... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1634131