Process for preparing a supported tungsten carbide composition United States Patent 04325843

04325843 is referenced by 38 patents and cites 3 patents.

A process for preparing a supported tungsten carbide composition which comprises first forming a supported tungsten oxide composition, converting the oxide to the nitride by heating in an ammonia atmosphere, and then converting the nitride to the carbide by heating in a carbiding atmosphere.

Title
Process for preparing a supported tungsten carbide composition
Application Number
6/213970
Publication Number
4325843
Application Date
December 8, 1980
Publication Date
April 20, 1982
Inventor
Ronald J Hoxmeier
Houston
TX, US
Lynn H Slaugh
Houston
TX, US
Assignee
Shell Oil Company
TX, US
IPC
B01J 27/22
B01J 23/30
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Citations: 38 (view full list)

  1. Kelly B Triplett, Johst H Burk, Fawzy G Sherif, Willem Vreugdenhil: Non-oxide metal ceramic catalysts comprising metal oxide support and intermediate ceramic passivating layer. Akzo Nobel, Richard P Fennelly, Louis A Morris, August 16, 1994: US05338716 (84 worldwide citation)
  2. Daniel J Sajkowski, Shigeo T Oyama: Hydrotreating process using carbides and nitrides of group VIB metals. Amoco Corporation, Thomas A Yassen, Richard A Kretchmer, Frank J Sroka, April 6, 1993: US05200060 (38 worldwide citation)
  3. Michel Boudart, Shigeo T Oyama, Leo Volpe: Methods and compostions involving high specific surface area carbides and nitrides. The Board of Trustees of the Leland Stanford Junior University Stanford University, Richard L Neeley, July 25, 1989: US04851206 (28 worldwide citation)
  4. Robert G Bowman, Marvin H Tegen, George E Hartwell: Amination process employing group vib metal catalysts. The Dow Chemical Company, May 1, 1990: US04922024 (26 worldwide citation)
  5. Lucien Leclercq, Marcelle Provost: Catalytic reforming process employing reforming catalysts which are based on tungsten and molybdenum carbides. Eruotungstene Poudres, McDougall Hersh & Scott, June 11, 1985: US04522708 (24 worldwide citation)
  6. Fuchen Liu, Juan Arhancet, James P Coleman, Martin P McGrath: Transition metal-containing catalysts and processes for their preparation and use as oxidation and dehydrogenation catalysts. Monsanto Technology, Senniger Powers, Joseph A Schaper, April 26, 2011: US07932419 (22 worldwide citation)
  7. Alfred E Keller, Joe D Allison, Sriram Ramani, Terry D Pruitt: Short contact time catalytic partial oxidation process for recovering sulfur from an H2S containing gas stream. ConocoPhilips Company, Conley Rose, September 20, 2005: US06946111 (17 worldwide citation)
  8. Shigeo T Oyama, Chunzhe C Yu, Fawzy G Sherif: Catalytic bimetallic oxynitrides and nitrides. Akzo Nobel, Clarkson University, Richard P Fennelly, Louis A Morris, August 22, 1995: US05444173 (14 worldwide citation)
  9. An hsiang Wu, Charles A Drake: Zeolite catalyst composition comprising tungsten carbide and process therefor and therewith. Phillips Petroleum Company, Lucas K Shay, July 7, 1998: US05776852 (11 worldwide citation)
  10. Alfred E Keller, Sriram Ramani, Joe D Allison, Steven E Lusk, Nathan A Hatcher, Larry D Swinney, Kerri J Kirkendall, Gilbert E Torres, Paul D Stewart, Terry D Pruitt: Compact sulfur recovery plant and process. ConocoPhillips Company, Conley Rose P C, June 5, 2007: US07226572 (10 worldwide citation)

References: 3

  1. Mund Konrad, Richter Gerhard, Wenzel Magdalena: Method for the manufacture of powdered tungsten carbide containing electrode material. Siemens Aktiengesellschaft, Wilfond Arthur E, February 5, 1974: US3790410 (7 worldwide citation)
  2. Jack N Finch: Methanation of carbon monoxide over tungsten carbide-containing alumina catalyst for methanation of carbon monoxide. Phillips Petroleum Company, August 26, 1980: US04219445 (23 worldwide citation)
  3. April, 1973: DE2149523