Patents Examined by Carl F. Dees
  • Patent number: 5389233
    Abstract: A zeolite-containing cracking catalyst is passivated with lithium sulfate and, preferably, at least one additional passivating agent (more preferably at least one antimony compound). The thus-passivated cracking catalyst is employed in a process for catalytically cracking a hydrocarbon-containing oil feed. In another embodiment, lithium sulfate and, preferably, at least one additional passivating agent are added to a hydrocarbon-containing oil feed which is catalytically cracked in the presence of a zeolite-containing cracking catalyst.
    Type: Grant
    Filed: October 14, 1993
    Date of Patent: February 14, 1995
    Assignee: Phillips Petroleum Company
    Inventor: Dwayne R. Senn
  • Patent number: 5387565
    Abstract: This invention relates to an emission control device containing a catalytic material capable of reducing pollutants in the combustion gases generated from an internal combustion engine, as well as from other combusted solid and liquid fossil fuels such as coal, and is also useful for treating combustion gases generated from the incineration of landfill garbage and tire rubber, among others. The catalytic material of the present invention is highly resistant to deactivation or poisoning from contaminants in the combusted material such as leaded gasoline. The catalytic material predominantly comprises a plagioclase feldspar belonging mainly to the albite-anorthite series and contains small amounts of mica, kaolinite and serpentine, and optionally contains magnetite. A catalytic alloy material is also disclosed, comprising a mixture of the above-described catalytic material and a metal. The alloy material likewise exhibits unique catalytic properties.
    Type: Grant
    Filed: February 17, 1994
    Date of Patent: February 7, 1995
    Inventor: Jack H. Taylor, Jr.
  • Patent number: 5387566
    Abstract: A process for converting catalytic cracking catalyst fines to a shaped composition comprises acid-treatment of catalytic cracking catalyst fines, followed by separation and drying of the acid-treated fines; preparing a shapable mixture by mixing the dried catalyst fines with calcium aluminate, sodium silicate, phosphoric acid and water; shaping (preferably extruding) the obtained shapable mixture; and drying and thereafter calcining the obtained shaped particles. A shaped composition having high crash strength is obtained by this process.
    Type: Grant
    Filed: March 24, 1994
    Date of Patent: February 7, 1995
    Assignee: Phillips Petroleum Company
    Inventors: Randall A. Porter, Jesse R. Harris, Donald H. Kubicek
  • Patent number: 5384297
    Abstract: A tri-elemental catalyst on a support that includes a pentasil crystalline zeolite and is suitable for hydrocracking and hydrogenation of aromatics-containing petroleum hydrocarbon feedstocks such as hydrotreated cracked feedstock, virgin feedstock, vacuum distillate, middle distillate, mixtures thereof, and the like, is disclosed. The catalyst is suitable for hydrodesulfurization as well as hydrodenitrogenation, thus the feedstock can contain sulfur and nitrogen in addition to the aromatic components. Hydrocracking and aromatics hydrogenation of the petroleum hydrocarbon feedstocks is accomplished under a relatively wide range of process conditions in plural process zones using the tri-elemental catalyst that contains a catalytically active metal phase constituted by a Group VI-B element, a Group VIII first transition series element and a Group VIII second transition series element.
    Type: Grant
    Filed: September 28, 1993
    Date of Patent: January 24, 1995
    Assignee: Intevep, S.A.
    Inventors: Ricardo Prada, Roberto Galiasso, Yilda Romero, Edito Reyes, Edilberto Rodriguez
  • Patent number: 5384295
    Abstract: The method enables the creation of a pillared layered clay (a PILC) by contacting the clay with a pillaring precursor and delivering energy to the reaction mixture to intercalate the precursor into the clay. The pillaring precursor is an electrically neutral organometallic molecule with a carbon-metal bond which is susceptible to proton attack whereby protons donated from sites of Bronsted acidity in the clay cleave the carbon-metal bond to yield an organic fragment of the precursor and a metal-containing pillaring fragment. A preferred precursor is Ph.sub.2 SnCl.sub.2.
    Type: Grant
    Filed: August 30, 1993
    Date of Patent: January 24, 1995
    Assignee: British Technology Group Limited
    Inventors: William R. McWhinnie, Stephen P. Bond
  • Patent number: 5384300
    Abstract: A catalyst member for use in processes for the catalytic combustion of gaseous carbonaceous fuels is made from a stabilized carrier having a plurality of gas flow passages extending therethrough defined by channel walls and a catalyst material disposed on the channel walls, wherein the carrier is stabilized against interaction with the catalyst material. The stabilized carrier may be prepared from a monolith comprising silica, magnesia and alumina that has a coating of alumina on the channel walls and by subjecting the coated monolith to stabilizing conditions. The stabilizing conditions may include exposure to high temperature steam.
    Type: Grant
    Filed: April 28, 1993
    Date of Patent: January 24, 1995
    Assignee: Engelhard Corporation
    Inventors: Jennifer S. Feeley, Dianne O. Simone, Leonard M. Quick, Martha M. Hamil
  • Patent number: 5384296
    Abstract: A zeolite catalyst composition having increased resistance to agglomeration and/or migration of its noble metal component at high temperatures and a method for preparing the catalyst composition are disclosed. The zeolite catalyst composition contains non-framework multivalent alumina which is obtained by calcining the zeolite at a temperature of at least 600.degree. C. in moist air (10 to 100 torr water).
    Type: Grant
    Filed: August 16, 1993
    Date of Patent: January 24, 1995
    Assignee: Mobil Oil Corporation
    Inventor: Ying-Yen P. Tsao
  • Patent number: 5382351
    Abstract: When a zeolite additive composition of a medium-pore zeolite with a Constraint Index from about 1 to about 12 and a silica to alumina mole ratio greater than about 12 is added to a conventional cracking catalyst dispersed in an inorganic matrix, the octane will be improved, but there will be a yield loss in the amount of gasoline produced. An improvement in that catalyst system is obtained by partially exchanging the medium-pore zeolite additive with cations from one or more elements of Group IA, Group IIA or Group IIIA excluding rare earths of the Periodic Table. The octane number of the gasoline-range product of an FCC process is still improved while the amount of the gasoline yield loss typically observed for such octane-enhancing additives is reduced.
    Type: Grant
    Filed: December 16, 1993
    Date of Patent: January 17, 1995
    Assignee: W. R. Grace & Co.-Conn.
    Inventors: James G. Miller, Robert R. Gatte
  • Patent number: 5382420
    Abstract: The present invention is a rare-earth exchanged form of zeolite Q, which shows high thermal stability, and properties characteristic of a 12-ring zeolite structure.
    Type: Grant
    Filed: August 24, 1993
    Date of Patent: January 17, 1995
    Assignee: Exxon Research & Engineering Company
    Inventor: David E. W. Vaughan
  • Patent number: 5382416
    Abstract: A catalyst for purifying an exhaust gas to remove nitrogen oxides, carbon monoxide and hydrocarbons from an oxygen-rich exhaust gas containing nitrogen oxides, carbon monoxide and hydrocarbons, comprising (i) a zeolite having an SiO.sub.2 /Al.sub.2 O.sub.3 mole ratio of at least 15 and (ii) (a) cobalt, (b) an alkaline earth metal and (c) silver, or nickel and/or zinc, or platinum and/or manganese, or copper and/or rhodium, incorporated thereinto.
    Type: Grant
    Filed: March 28, 1994
    Date of Patent: January 17, 1995
    Assignee: Tosoh Corporation
    Inventors: Masao Nakano, Akinori Eshita, Kazuhiko Sekizawa
  • Patent number: 5382353
    Abstract: A pretreatment process is disclosed for increasing conversion and reducing the fouling rate of reforming catalysts wherein the catalyst is pretreated at a temperature from 1025.degree. F. to 1275.degree. F. in a reducing atmosphere prior to contacting the catalyst with a hydrocarbon feed in the presence of hydrogen.
    Type: Grant
    Filed: November 15, 1993
    Date of Patent: January 17, 1995
    Assignee: Chevron Research & Technology Co., a Div. of Chevron U.S.A. Inc.
    Inventors: Bernard F. Mulaskey, Robert L. Hise, Steven E. Trumbull, William J. Cannella, Robert A. Innes
  • Patent number: 5382558
    Abstract: A heat resistant layered porous silica having a honeycomb porous structure comprises a plurality of waved or bent sheet layers of crystalline layered silicate superposed one after another, and the neighboring sheets are partially bonded by siloxane bonding. The spacing between the neighboring sheet layers is narrowed toward the bonded portions and expanded at other portions to thereby form fine pores. The layered porous silica contains alkali metal ions in an amount of 0.2% by weight or less and has a specific surface area of 1,000 m.sup.2 /g or more.The layered porous silica has a large specific surface area, and exhibits an excellent heat resistance and adsorption of organic substances such as fuel.
    Type: Grant
    Filed: July 2, 1993
    Date of Patent: January 17, 1995
    Assignee: Kabushiki Kaisha Toyota Chuo Kenkyusho
    Inventors: Shinji Inagaki, Yoshiaki Fukushima, Akane Okada, Kazuhiro Fukumoto, Kazuyuki Kuroda
  • Patent number: 5380690
    Abstract: A cracking catalyst for the production of light olefins comprises 0-70% (based on the weight of the catalyst) of clay, 5-99% of inorganic oxides, and 1-50% of zeolite. The zeolite in the catalyst is a mixture of 0-25 wt % of REY or high silica Y zeolite and 75-100 wt % of phosphorus and rare earth containing high silica zeolite having a structure of pentasil. The catalyst exhibits higher hydrothermal activity-stability, conversion level, and C.sub.2 -C.sub.4 olefin yields in cracking reaction, comparing with the catalyst using HZSM-5 zeolite as active component.
    Type: Grant
    Filed: June 7, 1993
    Date of Patent: January 10, 1995
    Assignee: China Petro-Chemical Corporation
    Inventors: Shi Zhicheng, Shi Wenyuan, Ye Yifang, Ge Xingpin, Cao Ping, Liu Shunhua, Xie Chaogang, Li Zaiting, Shu Xingtian, Yang Xiaoming, Fu Wei, Zhou Meng, He Mingyuan
  • Patent number: 5380506
    Abstract: This invention relates to a emission control device containing a catalytic material capable of reducing pollutants in the combustion gases generated from an internal combustion engine, as well as from other combusted solid and liquid fossil fuels such as coal, and is also useful for treating combustion gases generated from the incineration of landfill garbage and tire rubber, among others. The catalytic material of the present invention is highly resistant to deactivation or poisoning from contaminants in the combusted material such as leaded gasoline. The catalytic material predominantly comprises a plagioclase feldspar belonging mainly to the albite-anorthite series and contains small amounts of mica, kaolinite and serpentine, and optionally contains magnetite.
    Type: Grant
    Filed: December 20, 1993
    Date of Patent: January 10, 1995
    Inventor: Jack H. Taylor, Jr.
  • Patent number: 5378670
    Abstract: Catalytically active phosphorus-containing zeolites/molecular sieves, particularly ultrastable zeolite Y, are prepared by reacting an exchanged zeolite/molecular sieve with a phosphorus compound such as H.sub.3 PO.sub.4, steaming, and reacting the steamed product with additional phosphorus compound.
    Type: Grant
    Filed: April 16, 1993
    Date of Patent: January 3, 1995
    Assignee: W. R. Grace & Co.-Conn.
    Inventor: Ranjit Kumar
  • Patent number: 5378671
    Abstract: There is provided a method for preparing an alumina bound, zeolite catalyst, wherein a zeolite of low silanol content is used as the source of zeolite used to prepare the catalyst. A particular zeolite used in this catalyst is zeolite Y. This catalyst may be combined with at least one hydrogenation component and used to hydrocrack hydrocarbons, such as gas oils. In particular, an NiW/USY/alumina catalyst may be used in a hydrocracking reaction to produce distillate boiling range hydrocarbons from higher boiling hydrocarbons.
    Type: Grant
    Filed: June 3, 1993
    Date of Patent: January 3, 1995
    Assignee: Mobil Oil Corp.
    Inventors: Kathleen M. Keville, Hye K. C. Timken, Robert A. Ware
  • Patent number: 5376610
    Abstract: A catalyst for exhaust gas purification has at least one monolith carrier, at least one first catalyst layer having a three-way catalytic activity, provided on the carrier, and a second catalyst layer having a hydrocarbon purification activity, provided on the first catalyst layer. In a gasoline engine automobile provided with the above catalyst for exhaust gas purification in the exhaust gas system, the hydrocarbons present in the exhaust gas can be converted at a high efficiency by introducing secondary air into the exhaust gas in front of the catalyst to make the exhaust gas lean, at the engine start when a large amount of unburnt hydrocarbons are present in the exhaust gas. Further, the engine warm-up property of the automobile can be improved by the heat generated by the catalytic reaction of the hydrocarbons. The catalyst further exhibits a three-way catalytic activity even during the steady state engine operation after warm-up.
    Type: Grant
    Filed: April 12, 1993
    Date of Patent: December 27, 1994
    Assignees: Nissan Motor Co., Ltd., NGK Insulators, Ltd.
    Inventors: Toshio Takahata, Hideharu Ehara, Fuminori Yamanashi, Katsuhiro Shibata, Fumio Abe, Tomoharu Kondo, Junichi Suzuki, Naomi Noda
  • Patent number: 5376608
    Abstract: Zeolite catalytic cracking catalyst compositions and additives that contain a Lewis acid supported upon alumina are useful for to process hydrocarbon feedstocks. The compositions are especially useful for the production of reduced sulfur gasoline.
    Type: Grant
    Filed: January 27, 1993
    Date of Patent: December 27, 1994
    Assignee: W. R. Grace & Co.-Conn.
    Inventors: Richard F. Wormsbecher, Gwan Kim
  • Patent number: 5376611
    Abstract: A process for preparing pillared chromium ribbon-like silicate clay .alpha.-olefin catalysts is disclosed which comprises contacting a ribbon-like clay selected from the group consisting of sepiolites with a chromium solution. Preparation of said chromium solution comprises the steps of:a) dissolving a chromium salt and a base in water by heating solution at a temperature in the range of about 20.degree. C. to about 100.degree. C. thereby producing a first chromium solution having a pH in the range of about 1.5 to 2.5;b) diluting said first chromium solution with water so as to produce a second chromium solution wherein first chromium solution is diluted such that the ratio of added water to first chromium solution is in the range of about 5 ml H.sub.2 O to about 10 mls H.sub.2 O to per ml first solution, and thereafter heating said second chromium solution at a temperature in the range of about 60.degree. C. to about 95.degree. C.
    Type: Grant
    Filed: May 6, 1993
    Date of Patent: December 27, 1994
    Assignee: Phillips Petroleum Company
    Inventor: Joseph S. Shveima
  • Patent number: RE34853
    Abstract: A method of preparing a monolithic catalyst support having an integrated high surface area phase is provided. A plasticized batch of ceramic matrix material intimately mixed with high surface area powder is formed into the desired shape for the monolith and then heated to sinter the ceramic. The resulting monolith has a strong substrate of the ceramic matrix material and a high surface area phase provided by the high surface area powder extruded with the batch.
    Type: Grant
    Filed: October 9, 1990
    Date of Patent: February 7, 1995
    Assignee: Corning Incorporated
    Inventors: Thomas P. DeAngelis, Irwin M. Lachman