Chemistry of hydrocarbon compounds – Saturated compound synthesis – By isomerization
Patent
1993-02-03
1994-03-08
Pal, Asok
Chemistry of hydrocarbon compounds
Saturated compound synthesis
By isomerization
585734, 585746, 585747, 585748, C07C 513
Patent
active
052929884
ABSTRACT:
Materials which have been prepared by a method which includes the steps of (1) impregnating alumina with a sulfate of at least one metal selected from the group consisting of copper, iron, cobalt, nickel, manganese, zinc and magnesium, (2) calcining the thus-obtained impregnated alumina materials, and (3) heating the calcined materials with AlCl.sub.3 and at least one chlorinated hydrocarbon (preferably CCl.sub.4) at a temperature of about 40.degree.-90.degree. C. are employed as catalysts in the isomerization of C.sub.5 -C.sub.10 cycloalkanes (preferably methylcyclopentane). A select group of the thus-prepared materials are employed as catalysts in the isomerization of C.sub.4 -C.sub.10 alkanes (preferably n-pentane and 2-methylbutane). Preferably, the catalyst preparation method also includes a step of treating the calcined impregnated alumina materials with gaseous hydrogen chloride before they are heated with AlCl.sub.3 and the chlorinated hydrocarbon(s).
REFERENCES:
patent: 2820074 (1958-01-01), Pines
patent: 2963528 (1960-12-01), Schwartz et al.
patent: 3238272 (1966-03-01), Nixon
patent: 3248343 (1966-04-01), Kelly et al.
patent: 3420909 (1969-01-01), Schmerling
patent: 3502735 (1970-03-01), Copelin
patent: 3523072 (1970-08-01), Schneider et al.
patent: 3631211 (1971-12-01), Schmerling
patent: 3655797 (1972-04-01), Schmerling
patent: 3846503 (1974-11-01), Schmerling et al.
patent: 5004859 (1991-04-01), Schmidt et al.
N. Kitajima, "Two Component Friedel-Crafts Catalysts as Solid Superacids", Materials Chemistry and Physics 17 (1987), pp. 31-48.
N. Kitajima et al., "Cu(AlCl.sub.4).sub.2 as a Catalyst for the Isomerization of Pentane at Room Temperature", Journal of Molecular Catalysis 10 (1981), pp. 121-122.
Y. Ono et al., "Isomerization of Pentane with AlCl.sub.3 -CuSO.sub.4 Mixtures", Journal of Catalysis 64 (1980), pp. 13-17.
N. Kitajima et al., "On the Active Species of Aluminum(III) Bromide-Copper(II) Bromide Mixtures as Catalysts for the Isomerization of Pentane", Journal Chem. Society, Perkin Transactions II, 1980, pp. 1201-1205.
Y. Ono et al., "Isomerization of Pentane with Aluminum Chloride (Gallium Chloride)-Cupric Salt Complexes", Proceedings 7th Internat. Congress Catalys., Tokyo, 1980, pp. 1006-1017.
Y. Ono et al., "Highly Selective Isomerization of Pentane with AlBr.sub.3 -Metal Sulfate Mixtures", Chemistry Letters, 1978, pp. 1061-1064.
Achutamurthy P.
Brandes K. K.
Pal Asok
Phillips Petroleum Company
LandOfFree
Preparation and use of isomerization catalysts does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Preparation and use of isomerization catalysts, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Preparation and use of isomerization catalysts will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-155451