Compositions – Preservative agents – Anti-oxidants or chemical change inhibitants
Patent
1978-09-11
1982-11-09
Konopka, P. E.
Compositions
Preservative agents
Anti-oxidants or chemical change inhibitants
585408, 585466, 585467, 585469, 585640, B01J 2938, C07C 124, C07C 266, C07C 522
Patent
active
043583954
ABSTRACT:
A method is provided for regeneration of a catalyst comprising a crystalline aluminosilicate zeolite characterized by a silica to alumina mole ratio of at least about 12, a constraint index, as hereinafter defined, within the approximate range of 1 to 12, which catalyst has undergone controlled precoking by exposing the same to a thermally decomposable organic compound at a temperature in excess of the decomposition temperature of said compound but less than about 1200.degree. F., at a hydrogen to organic compound mole ratio of between 0 and 1 to deposit at least about 1 weight percent coke thereon, such precoked catalyst having been deactivated by formation of a carbonaceous deposit thereon as a result of use of the same in catalytically converting an organic charge under conditions less severe, i.e., at a lower temperature and/or a higher hydrogen concentration than those employed during said precoking which comprises contacting the aged catalyst with an atmosphere comprising hydrogen at a temperature between about 800.degree. F. and about 1200.degree. F. and a pressure between about 0 and about 2000 psig for a period of time sufficient to at least partially restore the activity of the catalyst.
REFERENCES:
patent: 4001346 (1977-01-01), Chu
patent: 4088706 (1978-05-01), Keading
patent: 4128592 (1978-12-01), Keading
Haag Werner O.
Olson David H.
Rodewald Paul G.
Gilman Michael G.
Huggett Charles A.
Keen Malcolm D.
Konopka P. E.
Mobil Oil Corporation
LandOfFree
Hydrogen regeneration of coke-selectivated crystalline aluminosi does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Hydrogen regeneration of coke-selectivated crystalline aluminosi, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hydrogen regeneration of coke-selectivated crystalline aluminosi will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-745244