Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Organic compound containing
Patent
1998-11-10
2000-01-04
Wood, Elizabeth D.
Catalyst, solid sorbent, or support therefor: product or process
Catalyst or precursor therefor
Organic compound containing
502150, 502152, 502172, B01J 3100, B01J 3122
Patent
active
060109769
ABSTRACT:
A novel catalyst, which is a complex of organotin with a high boiling electron donor compound acting as solvent which includes bidentate ligands which form 1:1 bidentate and/or 1:2 monodentate adducts with R'.sub.2 SnX.sub.2 (X=Cl, R'O, R'COO or R'COS), R'.sub.3 SnX, R'.sub.2 SnO, Ph.sub.3-n R'SnX.sub.n or Ph.sub.4-n SnX.sub.n (wherein R'=C.sub.q H.sub.2q-1 n=0, 1 or 2 and q=2 to 12) and mixtures thereof, such as materials having the general formula RO[CH.sub.2 (CH.sub.2).sub.k CH.sub.2 O].sub.m R, wherein each R is independently selected from C.sub.1-12 alkyl, alkaryl or aralkyl moieties, k=0, 1, 2 or 3 and m=1, 2, 3, 4 or 5. The catalyst is useful in the process for producing dialkyl carbonates, such as dimethyl carbonate, from the reaction of a primary alcohol with urea.
REFERENCES:
patent: 4327035 (1982-04-01), Heitz et al.
patent: 4360477 (1982-11-01), Hallgreen et al.
patent: 4435595 (1984-03-01), Agreda et al.
patent: 4851555 (1989-07-01), Weinstein
patent: 4939294 (1990-07-01), Agreda et al.
patent: 5231212 (1993-07-01), Buysch et al.
patent: 5534649 (1996-07-01), Cho et al.
patent: 5545600 (1996-08-01), Knudsen et al.
patent: 5565603 (1996-10-01), Saleh et al.
patent: 5591883 (1997-01-01), Hwang et al.
patent: 5759941 (1998-06-01), Saleh
patent: 5877336 (1999-03-01), Hergenrother et al.
W.J.Close & M.A.Spielman, "A Proposed Mechanism for the Conversion of Alcohols to Allophanates", Mar. 13, 1953, pp. 4055-4056, vol. 75, Contribution from Abbott Laboratories.
R.Schwalm, P.Ball, H. Fullman & W.Heitz, Urea as a Carbon Dioxide Source in the Synthesis of Carbonates and Polycarbonates and Polycarbonates, pp. 272-273, Federal Republic of Germany, no publication date available.
Luigi Cassar, "Dimethylcarbonate: a new intermediate for a cleaner future",La Chimica & L'Industria, pp. 18-22, Oct. 1989, Italy.
Y.Okada, T.Kondo, S.Asaoka, "Dimethyl Carbonate Production for Fuel Additives", ACS 212th National Meeting, Orlando, Aug. '96, pp. 868-872.
Herbert W. Blohm and Ernest I. Becker, "Allophanates", Chem. Laboratories of the Polytechnic Institute of Brooklyn, New York, Chemical Rev. 1952, 51, pp. 471-504, no month available.
Peter Ball, Heinz Fullman, Reinhold Schwalm & Walter-Heitz, "Synthesis of Carbonates and Polycarbonates by Reaction of Urea with Hydroxy Compounds", C1 Mol. Chem., vol. 1, pp. 95-108, 1984, no month available.
John F. Knifton and Roger G. Duranleau,"Ethylene glycol-dimethyl carbonate cogeneration", Journal of Molecular Catalyst, 1991, pp. 389-399, no month available.
Michael A. Pacheco and Christopher L. Marshall, "Review of Dimethyl Carbonate (DMC) Manufacture and Its Characteristics as a Fuel Additive", Energy & Fuels, 1997, 11, 2-29, no month available.
Catalytic Distillation Technologies
Johnson Kenneth H.
Wood Elizabeth D.
LandOfFree
Catalyst for making dialkyl carbonates does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Catalyst for making dialkyl carbonates, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Catalyst for making dialkyl carbonates will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1072440