Patents Examined by William G. Wright
  • Olefin disproportionation catalyst
    Patent number: 4629719
    Abstract: An improved olefin disproportionation catalyst produced by contacting an inorganic refractory oxide containing a catalytic amount of molybdenum oxide with a promoting amount of elemental metals of the group consisting of tin and magnesium.
    Type: Grant
    Filed: December 7, 1984
    Date of Patent: December 16, 1986
    Assignee: Phillips Petroleum Company
    Inventors: Simon G. Kukes, Robert L. Banks
  • Coal liquefaction with coal tar solvent
    Patent number: 4629554
    Abstract: A method of liquefying coal in which coal is mixed with a process solvent comprising at least partially hydrogenated coal tar material to produce a coal-solvent slurry. This slurry is treated under coal-liquefying conditions, preferably including a hydrogen atmosphere and elevated temperatures, to produce a solution containing coal liquefaction products. These products are recovered from the solution. Recovered, process-derived solvent material may be recycled in order to supplement the at least partially hydrogenated coal tar material as an ingredient of the process solvent.
    Type: Grant
    Filed: September 19, 1985
    Date of Patent: December 16, 1986
    Assignee: Kerr-McGee Corporation
    Inventors: Srikant Gir, Donald E. Rhodes
  • Process for producing narrow-pore catalyst supports
    Patent number: 4629716
    Abstract: This invention relates to a process for preparing catalyst supports with a narrow pore size distribution by simultaneously titrating an acid aluminum species, a basic aluminum species and a phosphorus oxide. The porous alumina supports have surface areas above about 300 m.sup.2 /g with more than 80% of the pores having diameters less than 50 .ANG..
    Type: Grant
    Filed: April 15, 1985
    Date of Patent: December 16, 1986
    Assignee: Shell Oil Company
    Inventor: Richard A. Kemp
  • Phosphorus-modified alumina composite, method of manufacture and use thereof
    Patent number: 4629717
    Abstract: A novel phosphorus-modified alumina composite comprising a hydrogel having a molar ratio on an elemental basis of phosphorus to aluminum of from 1:1 to 1:100 together with a surface area of about 140 to 450 m.sup.2 /gm is defined. The composite is prepared by admixing an alumina hydrosol with a phosphorus-containing compound to form a phosphorus-modified sol and gelling said admixture. The phosphorus-modified alumina composite is useful as a catalyst support for various catalytic reactions.
    Type: Grant
    Filed: June 11, 1985
    Date of Patent: December 16, 1986
    Assignee: UOP Inc.
    Inventor: Tai-Hsiang Chao
  • Catalytic coal liquefaction with treated solvent and SRC recycle
    Patent number: 4627913
    Abstract: A process for the solvent refining of coal to distillable, pentane soluble products using a dephenolated and denitrogenated recycle solvent and a recycled, pentane-insoluble, solvent-refined coal material, which process provides enhanced oil-make in the conversion of coal.
    Type: Grant
    Filed: January 9, 1985
    Date of Patent: December 9, 1986
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Diwakar Garg, Edwin N. Givens, Frank K. Schweighardt
  • Catalytic coal liquefaction process
    Patent number: 4626342
    Abstract: An improved process for catalytic solvent refining or hydroliquefaction of non-anthracitic coal at elevated temperatures under hydrogen pressure in a solvent comprises using as catalyst a mixture of a 1,2- or 1,4-quinone and an alkaline compound, selected from ammonium, alkali metal, and alkaline earth metal oxides, hydroxides or salts of weak acids.
    Type: Grant
    Filed: October 29, 1985
    Date of Patent: December 2, 1986
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Diwakar Garg, Swaminathan Sunder
  • Method for the preparation of high activity palladium based catalysts
    Patent number: 4623635
    Abstract: A method for the preparation of a high activity palladium metal based catalyst having the formulaPdTe.sub.a Zn.sub.d E.sub.ewhereE is one or more metals from the group IIA, IVA, VA, IB, VIIB or VIII; anda, d and e are from about 0 to 3, with the proviso that at least d or e.noteq.0.The method comprises the step of forming an aqueous solution of a palladium compound, adding to the solution a powder of a reducing metal more electropositive than palladium and reducing the palladium to its metallic state on the surface of the reducing metal and, separating the resulting catalyst from the solution. Catalysts prepared according to this method are useful for producing esters from aldehydes and alcohols and provide greater conversions to the ester than catalysts prepared by previous processes.
    Type: Grant
    Filed: April 18, 1985
    Date of Patent: November 18, 1986
    Assignee: The Standard Oil Company
    Inventors: Christos Paparizos, Wilfrid G. Shaw, James L. Callahan
  • Catalysts for photo-assisted oxidation-reduction reactions
    Patent number: 4623437
    Abstract: New catalysts for photo-assisted (i.e. promoted by light) oxidation-reduction (redox) reactions are disclosed. These catalysts consist of colloidal particles of a semiconductor, containing on their surface a reduction catalyst and an oxidation catalyst. In a first class of catalysts, the semiconductor has a difference of energy between valence band and conduction band such as to allow the hole-electron separation by absorption of visible light. This semiconductor is selected, in the case of the photo-decomposition of water, from the group consisting of TiO.sub.2 doped with Mn, Cr, or Cr and Nb; CdS doped with In or Ga; SrTiO.sub.3 doped with Cr or Mn; gallium phosphide; and cadmium sulphoselenide. In the case of the other photo-decomposition reactions, the semiconductor is selected from the group consisting of the above-mentioned compounds and CdS.
    Type: Grant
    Filed: July 15, 1982
    Date of Patent: November 18, 1986
    Assignee: Sibit S.p.A.
    Inventors: Mario Visca, Carlo Scotti
  • Process for preparing abrasion-resistant coated catalysts
    Patent number: 4621072
    Abstract: A process is disclosed for preparing coated catalysts, inter alia, for gas phase oxidations in organic chemistry, comprised of an inert support and a coating of catalyst material enclosing this support, wherein a suspension of the starting material for the coating is sprayed onto an agitated bed of the support, while the suspending medium is being partially removed by a gas stream, and the raw material is then dried and heat-treated. For this purpose, the support bed is mechanically agitated and loosened by a gas stream blown in from below. The catalyst precursor containing a binder and, if appropriate, a pore-former is sprayed in an increasing amount from above onto the bed, the ratio between suspending medium sprayed on and drawn off remaining about constant. The thermal expansion coefficient of the precursor as a dry powder must not deviate by more than 15% from that of the support.
    Type: Grant
    Filed: February 26, 1985
    Date of Patent: November 4, 1986
    Assignee: Degussa Aktiengesellschaft
    Inventors: Dietrich Arntz, Gunter Prescher, Werner Burkhardt, Johannes Heilos, Reinhard Manner
  • Coal liquefaction process using pretreatment with a binary solvent mixture
    Patent number: 4617105
    Abstract: An improved process for thermal solvent refining or hydroliquefaction of non-anthracitic coal at elevated temperatures under hydrogen pressure in a hydrogen donor solvent comprises pretreating the coal with a binary mixture of an aromatic hydrocarbon and an aliphatic alcohol at a temperature below 300.degree. C. before the hydroliquefaction step. This treatment generally increases both conversion of coal and yields of oil.
    Type: Grant
    Filed: September 26, 1985
    Date of Patent: October 14, 1986
    Assignee: Air Products and Chemicals, Inc.
    Inventor: Robert N. Miller
  • Catalysts for coal liquefaction processes
    Patent number: 4617106
    Abstract: Improved catalysts for catalytic solvent refining or hydroliquefaction of non-anthracitic coal at elevated temperatures under hydrogen pressure in a hydrogen donor solvent comprise a combination of zinc or copper, or a compound thereof, and a Group VI or non-ferrous Group VIII metal, or a compound thereof.
    Type: Grant
    Filed: July 26, 1985
    Date of Patent: October 14, 1986
    Assignee: Air Products and Chemicals, Inc.
    Inventor: Diwakar Garg
  • Fuel agglomerates and method of agglomeration
    Patent number: 4615712
    Abstract: Solid fuel agglomerates are prepared of particulate coal or other carbonaceous material with a binder having a high humic acid or humate salt content. The humic acid is extracted from oxidized carbonaceous material with a mild aqueous alkali solution of, for instance, ammonia. The particulate material is blended with the extract which serves as the binder for the agglomerates. The water-resistant agglomerates are formed such as by pelletizing, followed by drying to remove moisture and solidify the humic acid binder throughout the agglomerate.
    Type: Grant
    Filed: August 9, 1985
    Date of Patent: October 7, 1986
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventor: Wu-Wey Wen
  • Coal liquefaction process
    Patent number: 4610776
    Abstract: A coal liquefaction process comprising reacting coal with a hydrocarbonaceous solvent at coal liquefaction conditions in the presence of an oil shale residue catalyst comprising organic and inorganic fractions. The oil shale residue catalyst is derived by heating an oil shale in the presence of an inert gas with respect to the oil shale at a temperature of 500.degree.-825.degree. F.
    Type: Grant
    Filed: July 15, 1985
    Date of Patent: September 9, 1986
    Assignee: UOP Inc.
    Inventors: Peter Urban, Lee Hilfman
  • Coal liquefaction with preasphaltene recycle
    Patent number: 4609455
    Abstract: A coal liquefaction system is disclosed with a novel preasphaltene recycle from a supercritical extraction unit to the slurry mix tank wherein the recycle stream contains at least 90% preasphaltenes (benzene insoluble, pyridine soluble organics) with other residual materials such as unconverted coal and ash. This subject process results in the production of asphaltene materials which can be subjected to hydrotreating to acquire a substitute for No. 6 fuel oil. The preasphaltene-predominant recycle reduces the hydrogen consumption for a process where asphaltene material is being sought.
    Type: Grant
    Filed: February 21, 1985
    Date of Patent: September 2, 1986
    Assignee: International Coal Refining Company
    Inventors: Robert F. Weimer, Robert N. Miller
  • Demetallization of hydrocarbon containing feed streams
    Patent number: 4609638
    Abstract: Metals contained in a hydrocarbon containing feed stream are removed by contacting the hydrocarbon containing feed stream under suitable demetallization conditions with hydrogen and a catalyst composition comprising zirconium phosphate, cobalt phosphate and iron phosphate. The life and activity of the catalyst composition may be increased by introducing a decomposable metal compound selected from the group consisting of the metals of Group V-B, Group VI-B, Group VII-B and Group VIII of the Periodic Table into the hydrocarbon containing feed stream prior to contacting the hydrocarbon containing feed stream with the catalyst composition.
    Type: Grant
    Filed: June 17, 1985
    Date of Patent: September 2, 1986
    Assignee: Phillips Petroleum Company
    Inventors: Simon G. Kukes, Gil R. Hawley
  • Coal liquefaction process
    Patent number: 4602991
    Abstract: A liquefaction process for coal or lignite is set forth. In the preferred and illustrated embodiment, coal or lignite is ground to a suitable particle size and placed in a reactor vessel. The reactor vessel is located within a pressure vessel. Pressure in the vessel is reduced to about 10.sup.-2 torr.Heat is applied. One procedure is to convert the carbon (in the coal or lignite) at an elevated temperature (600.degree.-900.degree. F.) in the presence of hydrogen (at pressures as high as 2,000 psi) into a hydrocarbon mix; depressurization avoids making various oxides and nitrides, and also can be optionally carried out in the presence of iron or iron ore in particulate form acting as a catalyst.
    Type: Grant
    Filed: October 17, 1983
    Date of Patent: July 29, 1986
    Inventor: Prabhakar Kulkarni
  • Coal hydrogenation process with integrated refining stage
    Patent number: 4602992
    Abstract: In accordance with the invention, during hydrogenation by means of sump phase hydrogenation followed by gas-phase hydrogenation, the high boiling fractions are separated from the lower boiling vapor fractions, after leaving the hot precipitation head, by partial condensation in an intermediate precipitator with the result that the gas-phase reactor has a better service life and optimum reaction conditions can be provided. The improved process results in an improved quality of solvent for the sump phase hydrogenation.
    Type: Grant
    Filed: September 20, 1985
    Date of Patent: July 29, 1986
    Assignee: Ruhrkohle Aktiengesellschaft
    Inventors: Josef Langhoff, Eckard Wolowski, Frank Mirtsch
  • Vapor phase nitration catalysts
    Patent number: 4600702
    Abstract: Catalysts compositions useful to catalyze the nitration of aromatic compounds in the vapor phase to produce nitroaromatic compounds are represented by the empirical formula:(M.sup.1.sub.a M.sup.2.sub.b O.sub.c).sub.x (NO.sub.2).sub.ywherein M.sup.1 is at least one element selected from Group 4b of the Periodic Table of the Elements, M.sup.2 is at least one element selected from Group 3b of the Periodic Table of the Elements, a is 1, b is 0.050 to 20, c is a number taken to satisfy the average valences of M.sup.1 and M.sup.2 in the oxidation states in which they exist in the composition, x is 1, and y is 0 to c. The compositions are particularly effective to catalyze the vapor phase nitration of chlorobenzene and are characterized in such reaction by providing a para/ortho isomer distribution ratio of at least about 1.9/l.
    Type: Grant
    Filed: November 14, 1984
    Date of Patent: July 15, 1986
    Assignee: Monsanto Company
    Inventor: Ignatius Schumacher
  • Long capillary tube hose assembly for fluid dispensing device
    Patent number: 4597754
    Abstract: A hose assembly for use to regulate flow from a dispensing device that provides a generally constant pressure on a liquid to be dispersed. The hose assembly includes a length of capillary tubing through which the liquid must pass as it is dispersed which has a length of at least 45 centimeters and a volume of less than about 0.25 cubic centimeters so that the assembly can provide a slow steady predetermined flow rate while containing a small amount of the liquid being dispensed.
    Type: Grant
    Filed: February 7, 1984
    Date of Patent: July 1, 1986
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Gary A. Thill, Jerome E. Strand
  • Process for the utilization of waste waters in the hydrogenation of coal
    Patent number: 4597851
    Abstract: The invention provides a process for the utilization of waste water in a coal hydrogenation plant. The demand for processed water and the amount of water required in the hydrogenation of coal is reduced by the use of the resulting waste water from an atmospheric distiller and/or a vacuum distiller as quenching water in a cold precipitator stage of the coal hydrogenation process.
    Type: Grant
    Filed: June 25, 1984
    Date of Patent: July 1, 1986
    Assignee: Ruhrkohle Aktiengesellschaft
    Inventors: Eckard Wolowski, Hans-Friedrich Tamm