Patents Examined by Carl F. Dees
  • Patent number: 5413985
    Abstract: The invention relates to a partially crystalline, transitional aluminum oxide containing 4-fold and 5-fold coordinated aluminum oxide in a ratio of at least 1:2. The invention also relates to a method of making this composition. The composition is particularly useful as starting material for manufacturing highly reactive molded articles. Accordingly, the invention also relates to this manufacturing process.
    Type: Grant
    Filed: December 30, 1992
    Date of Patent: May 9, 1995
    Assignees: Vereinigte Aluminium-Werke A.G., Leuna-Werke AG
    Inventors: Roland Thome, Hubertus Schmidt, Reinhard Feige, Ulrich Bollmann, Rudiger Lange, Seigfried Engels
  • Patent number: 5409876
    Abstract: Process for oxidating paraffinic compounds into their corresponding alcoholic and/or ketonic derivatives, which process consists in causing said paraffins to react, at a temperature comprised within the range of from 0.degree. C. to 100.degree. C., preferably in an acidic medium, with a mixture of oxygen and hydrogen, in the presence of a catalyst on the basis of titanium-silicalite and of a noble metal and/or a derivative of such a metal.
    Type: Grant
    Filed: March 25, 1993
    Date of Patent: April 25, 1995
    Assignees: Eniricerche S.p.A., Snamprogetti S.p.A.
    Inventors: Mario G. Clerici, Giuseppe Bellussi
  • Patent number: 5407881
    Abstract: A process is disclosed wherein a zeolite molding having a high mechanical strength is produced by contacting a pentasil type zeolite molding with water.
    Type: Grant
    Filed: June 25, 1993
    Date of Patent: April 18, 1995
    Assignee: Sumitomo Chemical Co., Ltd.
    Inventors: Masaru Kitamura, Shuzo Murata, Kazuya Tsuchimoto
  • Patent number: 5407878
    Abstract: A composition comprising a coprecipitated magnesia-lanthana-alumina (MgO--La.sub.2 O.sub.3 --Al.sub.2 O.sub.3) wherein the MgO component is present as microcrystalline phase, having a BET (N.sub.2) surface area of at least 130 m.sup.2 /g, preferably part of which contains a catalytic oxidation and/or reducing promoter metal such as ceria, vanadia, iron and/or titania, is combined with an FCC catalyst which is used to catalytically crack a hydrocarbon feedstock that contains metal and/or sulfur.
    Type: Grant
    Filed: September 28, 1993
    Date of Patent: April 18, 1995
    Assignee: W. R. Grace & Co.-Conn.
    Inventor: Gwan Kim
  • Patent number: 5403799
    Abstract: Porous bodies are produced which are suitable for use as supports for catalysts, including living cells, such as bacteria and which are upset resistant to acids and bases. The bodies have a significantly large average pore diameter of about 0.5 to 100 microns, (i.e. 5,000 to 1,000,000 .ANG.) and a total pore volume of about 0.1 to 1.5 cc/g with the large pores contributing a pore volume of from about 0.1 to 1.0 cc/g. The bodies are made by preparing a mixture of ultimate particles containing a zeolite and one or more optional ingredients such as inorganic binders, extrusion or forming aids, burnout agents, or a forming liquid, such as water. In a preferred embodiment, the ultimate particles are formed by spray drying.
    Type: Grant
    Filed: December 21, 1992
    Date of Patent: April 4, 1995
    Assignee: W. R. Grace & Co.-Conn.
    Inventors: James G. Miller, Michael J. Wax, Richard F. Wormsbecher, Leo B. Aller, Donald R. Durham, Alan B. Chmurny
  • Patent number: 5403808
    Abstract: The subject invention relates to a process for the production of a sorbent for SO.sub.2 comprising mixing a source of Ca.sub.3 SiO.sub.5 admixed with about 3 % of a compound such as CaSO.sub.4 2 H.sub.2 O that facilitates the conversion of the Ca.sub.3 SiO.sub.5 to the desired product, or Ca.sub.2 SiO.sub.4, or both the mixture and Ca.sub.2 SiO.sub.4 with an excess of water; adding milling media to the mixture; and, agitating the mixture including the milling media for from about 1 hour to about 96 hours at a temperature of about ambient temperature to about 85.degree. C., such that a finely divided sorbent including C--S--H and Ca(OH).sub.2 as its main active components is formed.The invention further relates to the foregoing process wherein the source of Ca.sub.3 SiO.sub.5 admixed with about 3 % of a compound such as CaSO.sub.4.2 H.sub.2 O that facilitates the conversion of the Ca.sub.3 SiO.sub.5 to the desired product, or Ca.sub.2 SiO.sub.4, or both the mixture and Ca.sub.2 SiO.sub.
    Type: Grant
    Filed: July 7, 1993
    Date of Patent: April 4, 1995
    Assignee: Case Western Reserve University
    Inventors: Malcolm E. Kenney, Ray-Kuang Chiang
  • Patent number: 5403800
    Abstract: A ex situ selectivated catalytic molecular sieve for enhanced shape selective hydrocarbon conversions in which a catalytic molecular sieve is modified by being exposed to at least two selectivation sequences, each sequence including an impregnation of the molecular sieve with a selectivating agent and a subsequent calcination of the impregnated molecular sieve. The ex situ selectivation method is also described, including the use of aqueous carriers for the selecting agent. Also a method for in situ trim-selectivating the modified catalytic molecular sieve. Also, a method for moderate steaming of the selectivated molecular sieve. Also a method for in situ trim-selectivating the modified catalytic molecular sieve. Also described is the process for shape selective hydrocarbon conversion comprising contacting a hydrocarbon feedstream under conversion conditions with the selectivated molecular sieve.
    Type: Grant
    Filed: May 28, 1993
    Date of Patent: April 4, 1995
    Assignee: Mobil Oil Corp.
    Inventors: Jeffrey S. Beck, Sharon B. McCullen, David H. Olson
  • Patent number: 5403801
    Abstract: In the production of .epsilon.-caprolactam from cyclohexanon oxime in gaseous phase in the presence of solid catalysts, the catalysts, no matter whether they may have worked, are brought into contact with either aqueous solution of ammonium salts and at least one basic material or ammonia water.
    Type: Grant
    Filed: January 29, 1993
    Date of Patent: April 4, 1995
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Masaru Kitamura, Hiroshi Ichihashi, Hideto Tojima
  • Patent number: 5401704
    Abstract: There is provided a process and a catalyst for hydrocracking hydrocarbons, such as gas oils. The catalyst comprises a hydrogenating metal and small crystal size zeolite Y. The zeolite Y may have a crystal size of less than one micron. Examples of hydrogenating metals include nickel and tungsten.
    Type: Grant
    Filed: December 22, 1993
    Date of Patent: March 28, 1995
    Assignee: Mobil Oil Corporation
    Inventors: Robert P. L. Absil, James R. Katzer, Daria N. Lissy, Robert A. Ware, Stephen S. Wong
  • Patent number: 5399538
    Abstract: Disclosed is a porous sepiolite having an improved water-resistance and thermal shock resistance obtained by grinding, moisture-conditioning and molding sepiolite, and then calcining said molded sepiolite at a temperature in the range of about 650.degree. C. to about 800.degree. C. Also disclosed is a porous sepiolite having a large specific surface area, wherein the pores having a pore diameter of 50 angstroms or less have a specific surface area in the range of from 40 to 200 m.sup.2 /g and in which no less than 20% of the total surface of the sepiolite is occupied with the pores having a pore diameter of 50 angstroms or less and wherein the pore distribution curve of the sepiolite has a main peak at a pore diameter of no more than 50 angstroms. This sepiolite is obtained by grinding, moisture-conditioning and molding sepiolite, calcining the same at a temperature in the range of about 650.degree. to about 800.degree. C., and then subjecting said calcined sepiolite to an acid treatment.
    Type: Grant
    Filed: November 19, 1993
    Date of Patent: March 21, 1995
    Assignee: Nikki-Universal Co., Ltd.
    Inventors: Norio Inoue, Eiki Iida, Makoto Sakura, Hideyuki Yunoki, Koji Hara, Yoshiki Nakano, Takashi Aihara
  • Patent number: 5399327
    Abstract: A composition comprising a coprecipitated magnesia-lanthana-alumina (MgO--La.sub.2 O.sub.3 --Al.sub.2 O.sub.3) wherein the MgO component is present as microcrystalline phase, having a BET (N.sub.2) surface area of at least 130 m.sup.2 /g, preferably combined with a catalytic oxidation and/or reducing promoter metal such as ceria, vanadia and/or titania.
    Type: Grant
    Filed: January 18, 1994
    Date of Patent: March 21, 1995
    Assignee: W. R. Grace & Co.-Conn.
    Inventor: Gwan Kim
  • Patent number: 5396009
    Abstract: Zeolite L with flat basal planes, and reduced crystallite size is prepared in a synthesis modified by the addition of small amounts of additional metal such as magnesium, calcium, barium, cobalt, zinc, chromium, manganese or nickel. The addition of these metals also suppresses unwanted zeolite W formation even when the synthesis would otherwise form this zeolite.
    Type: Grant
    Filed: July 2, 1993
    Date of Patent: March 7, 1995
    Assignee: Exxon Research & Engineering
    Inventor: Johannes P. Verduijn
  • Patent number: 5395512
    Abstract: A hydrocarbon feedstock is catalytically cracked at an elevated temperature in a cracking zone with a zeolite cracking catalyst. The cracking catalyst employed comprises a crystalline aluminosilicate zeolite catalyst and a hybrid [Al,B]-zeolite catalyst. In this process the hydrocarbon feedstock is contacted with the zeolite catalyst in, for example, a fluidized bed catalytic cracking unit to yield cracked products containing increased amounts of C.sub.3 /C.sub.8 olefins.
    Type: Grant
    Filed: May 14, 1993
    Date of Patent: March 7, 1995
    Assignee: Texaco Inc.
    Inventors: Hsu-Hui Hsing, Roy E. Pratt, Chih-Hao M. Tsang, Chi-Lin O'Young
  • Patent number: 5395809
    Abstract: An in situ process for making improved zeolitic fluid cracking catalyst by spray drying a mixture of hydrous kaolin and spinel, essentially free from metakaolin, calcining the resulting microspheres to convert the hydrous kaolin to metakaolin, and reacting microspheres composed of a mixture of spinel and metakaolin forms of calcined clay with a seeded alkaline sodium silicate solution. The weight percent of hydrous kaolin in the starting (uncalcined) microspheres is greater than the spinel content.
    Type: Grant
    Filed: November 1, 1993
    Date of Patent: March 7, 1995
    Assignee: Engelhard Corporation
    Inventors: Rostam J. Madon, Gerald S. Koermer, John M. Macaoay
  • Patent number: 5395808
    Abstract: Porous bodies are produced which are suitable for use as supports for catalysts, including living cells, such as bacteria. The bodies have a significantly large average pore diameter of about 0.5 to 100 microns, (i.e. 5,000 to 1,000,000 .ANG.) and a total pore volume of about 0.1 to 1.5 cc/g with the large pores contributing a pore volume of from about 0.1 to 1.0 cc/g. The bodies are made by preparing a mixture of ultimate particles of bound clay, one or more optional ingredients such as inorganic binders, extrusion or forming aids, burnout agents, or a forming liquid, such as water. In a preferred embodiment, the ultimate particles are formed by spray drying.
    Type: Grant
    Filed: December 21, 1992
    Date of Patent: March 7, 1995
    Assignee: W. R. Grace & Co.-Conn.
    Inventors: James G. Miller, Michael J. Wax, Richard F. Wormsbecher
  • Patent number: 5393722
    Abstract: Ternary metal oxide solid solutions containing permutations of magnesium, nickel, and cobalt with trivalent metals such as aluminum, chromium, gallium, and iron show unusual resistance to rehydration. In addition, the ternary metal oxide solid solutions containing magnesium show unusual basic behavior with small incremental changes in magnesium content, especially where the magnesium represents under about 25 gram atom percent of all divalent metal cations. Such materials show promise as catalysts and adsorbents per se, and also have promise as hydrothermally stable carriers for catalytically active species.
    Type: Grant
    Filed: August 20, 1993
    Date of Patent: February 28, 1995
    Assignee: UOP
    Inventor: Jennifer S. Holmgren
  • Patent number: 5393718
    Abstract: The present invention relates to a zeolite beta catalyst characterized by critical limits of weak and strong acid species and exceptionally high catalytic activity. The catalyst is activated at a temperature effective to substantially reduce the concentration of strong acid species, i.e., hydronium cations, without substantially reducing the concentration of weak acid species, i.e., hydroxoaluminum cations, preferably following a calcining step wherein a synthesized zeolite beta catalyst containing a templating agent is calcined at a temperature in the range of from about 200.degree. to 1000.degree. C. in order to remove a substantial portion of the catalyst templating agent and an ion-exchanging step wherein the calcined catalyst is ion-exchanged with a salt solution containing at least one hydrogen forming cation selected from NH.sub.4.sup.+ and quaternary ammonium. Conversion processes utilizing the catalyst of the invention also are disclosed.
    Type: Grant
    Filed: July 26, 1993
    Date of Patent: February 28, 1995
    Assignee: UOP
    Inventors: Gary W. Skeels, Edith M. Flanigen
  • Patent number: 5391531
    Abstract: Dehydroxylated oxide (e.g. silica) particles are obtained by reacting oxide particles, having surface hydroxyl groups, with a dialkylcarbonate or diarylcarbonate. The resulting products have surface alkoxy or aryloxy groups and significantly reduced hydroxyl content. The treated oxide particles are especially suitable for use as catalyst supports, and especially as polyolefin catalyst supports.
    Type: Grant
    Filed: June 13, 1994
    Date of Patent: February 21, 1995
    Assignee: W. R. Grace & Co.-Conn.
    Inventor: David G. Ward
  • Patent number: 5391528
    Abstract: The invention relates to an alumino-silicate type catalyst containing an omega zeolite with a Si/Al atomic ratio of between 2.5 and 100, with a content by weight of sodium of less than 2 000 ppm (in relation to the weight off dry zeolite) and further containing, at least one metal selected from group IIa, IIb, and IVa metals, and at least one group VIII metal.The catalyst is prepared by the grafting of an organometallic compound of said group IIa, IVb, IIb, IVa metals.The catalyst is particularly suitable for the isomerization of an aromatic C.sub.8 cut.
    Type: Grant
    Filed: May 6, 1993
    Date of Patent: February 21, 1995
    Assignee: Institut Francais du Petrole
    Inventors: Eric Benazzi, Jean-Francois Joly, Christine Travers, Jean-Marie Basset, Agnes Choplin
  • Patent number: 5389593
    Abstract: Novel pillared clay compositions have been synthesized. The clay contains pillars which are at least partially fluorided. These pillars are metal fluoro hydroxy cations where the metal can be Al, Zr, Si/Al, Ti or Cr. The clays which can be pillared with these pillars are the smectite clays which include hectorite and beidellite along with synthetically prepared smectite clays. These clays are prepared by pillaring the clay, followed by calcination and then treatment with a fluoride salt such as ammonium bifluoride. Finally, these fluorided pillared clays find applications in hydrocarbon conversion processes such as alkylation.
    Type: Grant
    Filed: October 12, 1993
    Date of Patent: February 14, 1995
    Assignee: UOP
    Inventor: Jennifer S. Holmgren