Methylation of toluene in the presence of a phosphorus-modified

Details Methylation of toluene in the presence of a phosphorus-modified Methylation of toluene in the presence of a phosphorus-modified

1975-08-19

1977-01-11

Gantz, Delbert E.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

252411R, 252437, 252455Z, 260671C, C07C 1352, C07C 1508

Patent

active

040026981

ABSTRACT:
Process for the methylation of toluene to selectively yield para-xylene by reacting toluene with a methylating agent, such as methanol, in the presence of a catalyst comprising a crystalline aluminosilicate zeolite, which zeolite has a silica/alumina ratio of at least about 12 and a constraint index, as hereinafter defined, within the approximate range of 1 to 12, the catalyst having been modified by the addition thereto of phosphorus in an amount of at least 0.5 percent by weight and activated by vapor phase treatment at a temperature between about 400.degree. C. and about 650.degree. C. for at least about 1 hour with a methanol/water mixture.

REFERENCES:
patent: 3751506 (1973-08-01), Burress
patent: 3764563 (1973-10-01), Minachev et al.
patent: 3911041 (1975-10-01), Kaeding et al.

Affiliated with

Also associated with

Rating

Methylation of toluene in the presence of a phosphorus-modified does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Methylation of toluene in the presence of a phosphorus-modified , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Methylation of toluene in the presence of a phosphorus-modified will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1743407