Patents by Inventor Krijn P. de Jong

Krijn P. de Jong has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 5486313
    Abstract: The present invention provides a process for the preparation of carbon monoxide and/or hydrogen from a hydrocarbon feedstock. The hydrocarbon feedstock is subjected in a first stage to a catalytic partial oxidation process in which it is contacted, as a gaseous mixture comprising the hydrocarbon feedstock and an oxygen-containing gas, which gaseous mixture also comprises nitrogen, with a catalyst comprising as a catalytically active metal rhodium, iridium or platinum. At least a portion of the products of the first stage is subjected in a second stage to a process in which ammonia and/or hydrogen cyanide is removed.
    Type: Grant
    Filed: December 21, 1994
    Date of Patent: January 23, 1996
    Assignee: Shell Oil Company
    Inventors: Krijn P. De Jong, Peter W. Lednor, Anna E. M. Oud, Ronald J. Schoonebeek, Koert A. Vonkeman, Gerardus P. Van Der Zwet
  • Patent number: 5304697
    Abstract: Process for upgrading a paraffinic feedstock which includes: a) supplying the feedstock and an olefins-containing stream at a paraffin to olefin volume ratio greater than 2 to a reactor containing a zeolite-beta catalyst; and b) removing the upgraded product; wherein the process is operated at an olefin conversion of at least 90 mol % in an external circulation reactor having an extent of external circulation of liquid reactor content expressed as ##EQU1## of greater than 2 wherein .phi./v is the volumetric flow rate of feedstock and olefins-containing stream and .phi./vc is the volumetric external circulation flow rate, and upgraded products produced by the process.
    Type: Grant
    Filed: April 6, 1993
    Date of Patent: April 19, 1994
    Assignee: Shell Oil Company
    Inventors: Danny G. R. Peferoen, Krijn P. de Jong, Jean-Pierre Gilson, Willem H. J. Stork, Swan T. Sie, Carolus M. A. M. Mesters
  • Patent number: 4857497
    Abstract: A catalyst comprising a silica-containing carrier on which a metal component iron, nickel, or cobalt promoted by zirconium is supported snd, in addition, as promoter a noble metal from Group VIII of the Periodic Table; the promoter cobalt/zirconium catalyst is suitable for the preparation of hydrocarbons from carbon monoxide and hydrogen.
    Type: Grant
    Filed: April 25, 1988
    Date of Patent: August 15, 1989
    Assignee: Shell Oil Company
    Inventors: Krijn P. De Jong, Johannes H. E. Glezer, Martin F. M. Post
  • Patent number: 4548921
    Abstract: A silver catalyst comprises a sinter resistant carrier covered with finely ivided particles of a metal, a metal alloy or a partially reduced metal oxide having silver deposited thereon such that the outer surface of the particles consists essentially of monometallic silver. The metals are selected from Re, Ru, Os, Rh, Ir, Pd, Pt, Pb and Bi; the metal of the alloy from Re, Ru, Os, Rh, Ir, Pd and Pt; and the oxide from tin dioxide, lead oxide and bismuth oxide. The catalyst is useful in a variety of applications, particularly in the preparation of ethylene oxide.
    Type: Grant
    Filed: March 18, 1983
    Date of Patent: October 22, 1985
    Assignee: Nederlandse Organisatie Voor Zuiver-Wetenschappellik Ondebzoek (zwo)
    Inventors: John W. Geus, Krijn P. de Jong