Chemistry of hydrocarbon compounds – Aromatic compound synthesis – By alkyl or aryl transfer between molecules – e.g.,...
Reexamination Certificate
2005-01-25
2005-01-25
Dang, Thuan Dinh (Department: 1764)
Chemistry of hydrocarbon compounds
Aromatic compound synthesis
By alkyl or aryl transfer between molecules, e.g.,...
C585S470000
Reexamination Certificate
active
06846964
ABSTRACT:
A method is provided for conversion of heavy alkylaromatic compounds, particularly those in the C8-C12range, into more valuable aromatics of benzene, toluene and xylene utilizing a toluene disproportionation unit containing a nickel, palladium or platinum-modified mordenite catalyst. The method allows large amounts of these heavy alkylaromatic compounds to be processed without adversely affecting catalyst activity or catalyst life. This is accomplished by introducing the heavy alkylaromatic compounds into the reactor at constant reaction severity conditions and maintaining those conditions during conversion.
REFERENCES:
patent: 3780122 (1973-12-01), Pollitzer
patent: 4761514 (1988-08-01), Menard
patent: 5475180 (1995-12-01), Shamshoum et al.
patent: 5952535 (1999-09-01), King et al.
patent: 2761905 (1998-10-01), None
“Mordenite-containing catalysts in reactions of toluene disproportionation and trans-alkylation”, N.R. Bursian et al, J. Appl. Chem. USSR, vol. 57, No. 6, 1984, pp. 1151-1154, XP001099168.
“Toluene-disproportionation over aluminum-deficient and metal-loaded mordenites. 1. Catalytic activity and aging.” S.S. Bhavikatti and S.R. Patwardhan, Ind.Eng.Chem.Prod.Res.Dev. vol. 20, No. 1, 1981, pp. 102-105, XP001096495.
Butler James R.
Xiao Xin
Dang Thuan Dinh
Fina Technology, Inc.
Madan Mossman & Sriram P.C.
LandOfFree
Method of conversion of heavy aromatics does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method of conversion of heavy aromatics, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of conversion of heavy aromatics will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3397921