Abstract: A naphtha-reforming catalyst is prepared by using aluminum hydroxide as a feed stock, which is acidificated in steam at high temperature, then shaped and calcined to form .gamma.-Al.sub.2 O.sub.3 support which is supported with metals of Pt, Re and Ti and halogens. The Pt content is 0.075-0.8 Wt %, Re/Pt ratio is 0.1-3.0 (Wt.). Since the .gamma.-Al.sub.2 O.sub.3 support having high purity, high crystallinity and concentrated middle pores has been adopted, the activity, selectivity and stability of the catalyst are increased considerably while the Pt content decreased.
Abstract: Normal olefins such as n-butenes can be converted to iso olefins such as isobutylene by skeletal isomerization over catalysts of boron-beta zeolites having pore sizes of at least about 5 Angstroms and containing boron in the framework structure thereof. The boron-beta zeoliteS have sufficient acidity to catalyze the skeletal isomerization of normal olefinsto iso-olefins. The catalysts can be used to produce iso-olefins for reaction with alcohols in integrated processes to produce alkyl tertiary alkyl ethers such as MTBE.
Type:
Grant
Filed:
August 19, 1991
Date of Patent:
July 13, 1993
Assignee:
Texaco Inc.
Inventors:
Chi-Lin O'Young, John Hazen, Daniel G. Casey
Abstract: A composition having a strong air cleaning ability, comprising co-existent products comprised of a reaction product of at least one metal selected from Fe, Mn, Cr, Ni, Zn, Al and Cu and alloys containing these metal elements with tannic acid and/or gallic acid or a reaction product with at least one acid or ascorbic acid, citric acid, tartaric acid and gluconic acid containing tannic acid and/or gallic acid, and an unreacted metal as mentioned above co-existing with the reaction product, and in some cases, further containing a co-existent product comprising iron hydroxide and/or a sulfide, and a method of preparing same.
Abstract: A process for producing a 1,3-diol, e.g., 1,3-propanediol, or a 3-hydroxyaldehyde is disclosed which comprises contacting a combination of an epoxide, carbon monoxide and hydrogen in the present of a rhodium-containing catalyst effective to promote the hydroformylation of the epoxide at conditions effective to form at least one of a 1,3-diol and a 3-hydroxyaldehyde, the contacting occurring in the substantial absence of a promoting amount of alkali metal ions, and at least a portion of the rhodium-containing catalyst being formed substantially without incorporation of the epoxide. A process for producing such rhodium-containing compositions is also disclosed.
Type:
Grant
Filed:
April 25, 1991
Date of Patent:
July 6, 1993
Assignee:
Union Carbide Chemicals & Plastics Technology Corporation
Inventors:
John R. Briggs, John M. Maher, Arnold M. Harrison
Abstract: In conventional spraying methods the problem in the preparation of small carrier particles aimed for the polymerization is that the drops constituting the prestages of the particles agglomerate or form otherwise in different sizes, whereby the size distribution of the carrier particles becomes too broad. This leads due to the so-called replica phenomenon to a polymer product having also a too broad particle size distribution. In the present invention the carrier is prepared by spraying a liquid containing a carrier through a nozzle into inert gas so that its first forms small droplets, which then solidify to small carrier particles. The desired narrow particle size distribution is provided by feeding a liquid containing a carrier through a nozzle, in which or in connection with which the liquid drops by means of the standing sonic waves in the ultrasonic range into small droplets of uniform size. The droplets of uniform size solidify then into small carrier particles of equally uniform size.
Abstract: A method of preparing a fine particle iron based hydrocracking catalyst and the catalyst prepared thereby. An iron (III) oxide powder and elemental sulfur are reacted with a liquid hydrogen donor having a hydroaromatic structure present in the range of from about 5 to about 50 times the weight of iron (III) oxide at a temperature in the range of from about 180.degree. C. to about 240.degree. C. for a time in the range of from about 0 to about 8 hours. Various specific hydrogen donors are disclosed. The catalysts are active at low temperature (<350.degree. C.) and low pressure.
Type:
Grant
Filed:
April 3, 1992
Date of Patent:
May 25, 1993
Assignee:
The United States of America as represented by the United States Department of Energy
Inventors:
Malvina Farcasiu, Patricia A. Eldredge, Edward P. Ladner
Abstract: The invention relates to the heterogeneous catalysis.A catalyst according to the invention contains the following components in % by mass:______________________________________ product of calcination of iron oxide 30-50 based pyrite thermoplastic polymer the balance. ______________________________________The invention may be used in various industries, e.g. in the oil refinery.
Type:
Grant
Filed:
July 29, 1991
Date of Patent:
May 18, 1993
Inventors:
Raisa P. Kochetkova, Ljudmila I. Shpilevskaya, Ida P. Shiverskaya, Anatoly F. Babikov, Raisa M. Zaikova, Fedor K. Shmidt, Oleg A. Gurenko, Valery V. Glazyrin, Gennady P. Tikhonov, Vasily I. Usov, Anatoly A. Popov, Semen A. Eppel, Gennady I. Botkin, deceased, by Valentina I. Botkina, administrator, by Olga G. Botkina, administrator, by Natalya G. Botkina, administrator, by Alexei G. Botkin, administrator
Abstract: Porous particles of MgCl.sub.2 which have essentially the shape of two truncated right cones connected by their larger bases, which truncated cones are incurved towards the axis of symmetry perpendicular to the bases, at the intersection of the envelope of the truncated cones with two orthogonal planes passing through the said axis of symmetry. These particles are impregnated with a transition metal compound and employed as a catalytic component in the polymerization of olefins. The resultant polyolefins, especially polyethylene, polypropylene and their copolymers, are comprised of particles with a distinctive structure.
Abstract: An improved process for the production of linear alternating polymers of carbon monoxide and at least one ethylenically unsaturated hydrocarbon employs a novel catalyst composition formed from a compound of palladium, the anion of a strong non-hydrohalogenic acid and a novel hexakis phosphine ligand. The process is characterized by a lessened degree of reactor fouling.
Type:
Grant
Filed:
August 28, 1992
Date of Patent:
May 18, 1993
Assignee:
Shell Oil Company
Inventors:
Johannes J. Keijsper, Alexander W. van der Made, Petrus W. N. M. van Leeuwen
Abstract: A tin catalyst constituting an organotin compound modified with an amine is used to catalyze the hydrolysis of latent amine curing agents in amine-curable polymeric compositions. The tin catalyst is formed from the reaction product of a stannous alkanoate and an amine, optionally in the form of an adduct with water. A preferred catalyst is the reaction product of stannous octoate and ethylenediamine.
Abstract: This invention relates to a catalyst which is useful in oxidizing mercaptans present in a sour hydrocarbon fraction. The catalyst consists of an aqueous solution containing ammonium hydroxide, a metal chelate and an onium compound selected from the group consisting of quaternary ammonium, phosphonium, arsonium, stibonium, oxonium and sulfonium compounds. The counter ion of the onium compound is halide, nitrate, sulfate, phosphate, acetate, citrate and tartrate. The catalyst is used in a liquid-liquid process to sweeten a sour hydrocarbon fraction.
Type:
Grant
Filed:
November 29, 1991
Date of Patent:
April 20, 1993
Assignee:
UOP
Inventors:
Robert R. Frame, Jeffery C. Bricker, Laurence O. Stine, Thomas A. Verachtert
Abstract: The invention relates to a method for the preparation of a supported procatalyst intended for the polymerization of olefines, in which particles are formed of magnesium dihalide and alcohol, the particles are reacted with an organic compound of a metal from the groups I-III, the thus obtained particulate product is activated by means of a titanium and/or vanadium compound and optionally a donor, and optionally a prepolymerization is carried out for the activated particles. A problem of such a method is how to form particles of magnesium dihalogenide and alcohol having a structure advantageous for the polymerization of olefins. The problem has in the present invention been solved so that the particles are formed by spray crystallizing (spray freezing) a mixture of magnesium dihalide and alcohol to complex particles of magnesium dihalide and alcohol. The hydroxyl content of the particles so obtained is much greater than earlier, which results in a much more active procatalyst than the preceding ones.
Type:
Grant
Filed:
September 16, 1991
Date of Patent:
April 20, 1993
Assignee:
Neste Oy
Inventors:
Inkeri T. Korvenoja, Arja-Liisa Kostiainen, Fero I. Iiskola, Pekka J. E. Sormunen, Bill B. B. Gustatsson, Hilkka R. Knuuttila, Ulf Palmqvist
Abstract: A bathing preparation comprising at least one organic acid and at least one carbonate is disclosed. This bathing preparation contains fumaric acid in an amount of 20% by weight or more of the total of the organic acid and at least one highly volatile perfume. The perfume is not vaporized into the atmosphere. Therefore, the bathing preparation sustains its aroma in bath water for a long time, thus giving improved relaxant and refreshing effects.
Abstract: A dimerization process for producing linear and/or mono-branched C.sub.10 to C.sub.28 olefins using dimerization catalysts and new C.sub.10 to C.sub.28 olefins mixtures are disclosed. The C.sub.10 to C.sub.28 olefin product is especially useful for the production of biodegradable alkylbenzene sulfonates detergents and intermediates therefor.
Abstract: A dimerization process for producing linear and/or mono-branched C.sub.10 to C.sub.28 olefins using dimerization catalysts and new C.sub.10 to C.sub.28 olefins mixtures are disclosed. The C.sub.10 to C.sub.28 olefin product is especially useful for the production of biodegradable alkylbenzene sulfonates detergents and intermediates therefor.
Type:
Grant
Filed:
May 6, 1992
Date of Patent:
March 23, 1993
Assignee:
Chevron Research and Technology Company
Inventors:
Richard S. Threlkel, Victor P. Kurkov, Gar L. Woo
Abstract: A process for preparing chemically stable compositions of tetra(hydrocarbyl)metallic compounds in solution, and an improved process for the preparation of active 1-olefin polymerization catalysts.
Abstract: A catalyst support in the form of solid particles consisting essentially of a complex of MgCl.sub.2 and alcohol of the formula MgCl.sub.2, x(n-BuOH) in which 0.1.ltoreq.x.ltoreq.2, and which has a specific surface of 1 to 20 m.sup.2 /g and a particle porosity of 1 to 2 cm.sup.3 /g, and the process of making such support, and catalytic components comprising such support, a transition metal, and optionally, an electron donor.
Type:
Grant
Filed:
November 14, 1990
Date of Patent:
February 23, 1993
Assignee:
Atochem
Inventors:
Laurent Duranel, Jean Malinge, Marie-Laure Bousque
Abstract: The invention relates to a catalyst system, which comprises a source of a Group VIII metal and a polyphosphine. The invention further relates to a process for the preparation of alpha, beta-olefinically unsaturated compounds utilizing this catalyst system.
Type:
Grant
Filed:
April 14, 1992
Date of Patent:
February 23, 1993
Assignee:
Shell Oil Company
Inventors:
Peter A. A. Klusener, Hans A. Stil, Fit Drent, Peter Arnoldy
Abstract: A cleansing and conditioning composition for topical application comprising the combination of a surfactant, an emollient, a cationic material, a film former, a polyamino sugar condensate and water. The interaction of the ingredients effects both cleansing and moisturization of the skin.
Type:
Grant
Filed:
August 7, 1991
Date of Patent:
February 23, 1993
Assignee:
Kolmar Laboratories, Inc.
Inventors:
Christopher G. Baker, Elliott S. Zucker
Abstract: Disclosed is an improvement in a process for production of cyclohexane by liquid phase hydrogenation of benzene wherein no diluent is necessary, which comprises contacting benzene and hydrogen in the presence of a mixed catalyst bed comprising a first catalyst which is a less active hydrogenation catalyst selected from elements of Group VIII of the Periodic Table and a second, more active catalyst, comprising a Group VIII metal supported on an oxide, such as, for example, alumina, silica or titania at a temperature of about 40.degree. C. to about 300.degree. C. and pressure sufficient to keep the benzene liquid at the chosen reaction temperature.
Type:
Grant
Filed:
August 23, 1991
Date of Patent:
February 23, 1993
Assignee:
Texaco Chemical Company
Inventors:
John M. Larkin, James H. Templeton, Donald H. Champion