Selective para-xylene production by toluene methylation

C - Chemistry – Metallurgy – 07 – C

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C07C 1/20 (2006.01) C07C 2/66 (2006.01) C07C 2/86 (2006.01)

Patent

CA 2267915

There is provided a process for the selective production of para-xylene which comprises reacting toluene with methanol in the presence of a catalyst comprising a porous crystalline material having a Diffusion Parameter for 2,2 dimethylbutane of about 0.1-15 sec-1 when measured at a temperature of 120 °C and a 2,2 dimethylbutane pressure of 60 torr (8kPa). The porous crystalline material is preferably a medium-pore zeolite, particularly ZSM-5, which has been severely steamed at a temperature of at least 950 °C. The porous crystalline material is preferably combined with at least one oxide modifier, preferably including phosphorus, to control reduction of the micropore volume of the material during the steaming step.

L'invention se rapporte à un processus de production sélective de para-xylène, qui consiste à réagir du toluène avec du méthanol en présence d'un catalyseur comprenant un matériau cristallin poreux, dont le paramètre de diffusion pour 2,2 diméthylbutane varie environ de 0,1 à 15 sec<-1> lorsqu'il est mesuré à une température de 120 DEG C et à une pression de 2,2 diméthylbutane de 60 torrs (8kPa). Ledit matériau cristallin poreux est de préférence une zéolite de porosité moyenne, en particulier ZSM-5, qui a été fortement traitée par vapeur à une température au moins égale à 950 DEG C. Ledit matériau cristallin poreux est de préférence combiné à au moins un modificateur oxyde, de préférence contenant du phosphore, afin de réguler la réduction du volume de micropores dudit matériau pendant l'étape de traitement à la vapeur.

LandOfFree

Say what you really think

Search LandOfFree.com for Canadian inventors and patents. Rate them and share your experience with other people.

Rating

Selective para-xylene production by toluene methylation does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Selective para-xylene production by toluene methylation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Selective para-xylene production by toluene methylation will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFCA-PAI-O-1893762

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.