Chemistry of hydrocarbon compounds – Aromatic compound synthesis – By alkyl or aryl transfer between molecules – e.g.,...
Patent
1997-09-15
1998-06-09
Caldarola, Glenn
Chemistry of hydrocarbon compounds
Aromatic compound synthesis
By alkyl or aryl transfer between molecules, e.g.,...
585906, C07C 612
Patent
active
057637202
ABSTRACT:
A heavy aromatics feed is converted to lighter aromatics products, such as benzene, toluene and xylenes by contacting a C.sub.9 + aromatics fraction and benzene and/or toluene over a catalyst comprising a zeolite, such as ZSM-12, and a hydrogenation component, preferably platinum. The catalyst, complete with hydrogenation component, is treated to reduce aromatics loss. Treatment includes exposure to steam and/or sulfur after incorporation of the hydrogenation component. For additional stability and aromatics retention the steamed and/or sulfur treated catalyst is sulfided by cofeeding a source of sulfur. In a further embodiment of the invention a low hydrogen partial pressure is employed to retain aromatics.
REFERENCES:
patent: 3729409 (1973-04-01), Chen
patent: 3767568 (1973-10-01), Chen
patent: 3832449 (1974-08-01), Rosinski et al.
patent: 3948758 (1976-04-01), Bonacci et al.
patent: 3957621 (1976-05-01), Bonacci et al.
patent: 3965208 (1976-06-01), Butter et al.
patent: 3965209 (1976-06-01), Butter et al.
patent: 4001346 (1977-01-01), Chu
patent: 4007231 (1977-02-01), Butter
patent: 4011276 (1977-03-01), Chu
patent: 4016218 (1977-04-01), Haag et al.
patent: 4016219 (1977-04-01), Kaeding
patent: 4029716 (1977-06-01), Kaeding
patent: 4052476 (1977-10-01), Morrison
patent: 4100215 (1978-07-01), Chen
patent: 4117026 (1978-09-01), Haag et al.
patent: 4127471 (1978-11-01), Suggitt et al.
patent: 4150062 (1979-04-01), Garwood et al.
patent: 4152364 (1979-05-01), Chu
patent: 4172813 (1979-10-01), Feinstein et al.
patent: 4341914 (1982-07-01), Berger
patent: 4365104 (1982-12-01), Kaeding
patent: 4367359 (1983-01-01), Kaeding
patent: 4370508 (1983-01-01), Kaeding
patent: 4380685 (1983-04-01), Chu
patent: 4418235 (1983-11-01), Haag et al.
patent: 4753720 (1988-06-01), Morrison
patent: 4812223 (1989-03-01), Hickey, Jr. et al.
patent: 4857666 (1989-08-01), Barger et al.
patent: 4891458 (1990-01-01), Innes et al.
patent: 4983274 (1991-01-01), Chen et al.
patent: 5030787 (1991-07-01), Absil et al.
patent: 5406016 (1995-04-01), Cook et al.
Das et al., "Transalkylation and Disproportionation of Toluene and C.sub.9 Aromatics over Zeolite Beta" 23 Catalyst Letters pp. 161-168 (1994).
Das et al., "Zeolite Beta Catalyzed C.sub.7 and C.sub.9 Aromatics Transformation" 116 Applied Catalysis A: General, pp. 71-79 (1994).
Wang et al., "Disproprtionation of Toluene and of Trimethylbenzene and Their Translkylation over Zeolite Beta", 29 Ind. Eng. Chem. Res. pp. 2005-2012 (1990).
Yamada et al. "Hydrogenation by CoMo/Al.sub.2 O.sub.3 Catalyst (Part 3) Effect of H.sub.2 S on Hydrogenation of Monoaromatic Hydrocarbons" vol. 31, No. 2, Sekiyu Gakkaishi, pp. 118-124 (1988).
Buchanan John S.
Chester Arthur W.
Fung Anthony S.
Kinn Timothy F.
Mizrahi Sadi
Caldarola Glenn
Dang Thuan D.
Loo Blossom E.
Mobil Oil Corporation
Santini Dennis P.
LandOfFree
Transalkylation process for producing aromatic product using a t does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Transalkylation process for producing aromatic product using a t, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Transalkylation process for producing aromatic product using a t will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2201670