Patents by Inventor Luc R. Martens

Luc R. Martens 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: 7557256
    Abstract: This invention provides methods of making molecular sieve catalyst particles, molecular sieve slurries that can be used in such methods, molecular sieve catalyst compositions and their use in catalytic hydrocarbon conversion processes. In one of its aspects, the invention provides a method of making molecular sieve catalyst particles, the method comprising the steps of: a) providing a solution or suspension of an aluminum-containing inorganic oxide precursor in a liquid medium; b) combining the solution or suspension of aluminum-containing inorganic oxide precursor with a molecular sieve, and optionally other formulating agents, to form a catalyst formulation slurry; c) aging the catalyst formulation slurry to generate in said slurry a percentage, or increase in said slurry the existing percentage, of aluminum atoms of the aluminum-containing precursor in the form of oligomers having a sharp 27 Al NMR peak at 62-63 ppm; and d) forming molecular sieve catalyst particles from the catalyst formulation slurry.
    Type: Grant
    Filed: June 14, 2007
    Date of Patent: July 7, 2009
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Yun-Feng Chang, Stephen N. Vaughn, Kenneth R. Clem, Luc R. Martens, Weiguo Hu
  • Patent number: 7501375
    Abstract: This invention provides methods of making molecular sieve catalyst particles, molecular sieve slurries that can be used in such methods, molecular sieve catalyst compositions and their use in catalytic hydrocarbon conversion processes.
    Type: Grant
    Filed: June 14, 2007
    Date of Patent: March 10, 2009
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Yun-Feng Chang, Stephen N. Vaughn, Kenneth R. Clem, Luc R. Martens, Weiguo Hu
  • Patent number: 7312369
    Abstract: This invention provides an attrition resistant metalloaluminophosphate molecular sieve catalyst composition, methods of making the catalyst composition and processes for using the catalyst composition. The metalloaluminophosphate molecular sieve catalyst composition is highly attrition resistant in dried as well as fully calcined forms.
    Type: Grant
    Filed: April 28, 2004
    Date of Patent: December 25, 2007
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Yun-Feng Chang, Stephen N. Vaughn, Kenneth R. Clem, Luc R. Martens, Alistair D. Westwood, Jeffery W. Sprinkle
  • Patent number: 7241713
    Abstract: This invention provides methods of making molecular sieve catalyst particles, molecular sieve slurries that can be used in such methods, molecular sieve catalyst compositions and their use in catalytic hydrocarbon conversion processes. In one of its aspects, the invention provides a method of making molecular sieve catalyst particles, the method comprising the steps of: a) providing a solution or suspension of an aluminum-containing inorganic oxide precursor in a liquid medium; b) combining the solution or suspension of aluminum-containing inorganic oxide precursor with a molecular sieve, and optionally other formulating agents, to form a catalyst formulation slurry; c) aging the catalyst formulation slurry to generate in said slurry a percentage, or increase in said slurry the existing percentage, of aluminum atoms of the aluminum-containing precursor in the form of oligomers having a sharp 27Al NMR peak at 62-63 ppm; and d) forming molecular sieve catalyst particles from the catalyst formulation slurry.
    Type: Grant
    Filed: October 2, 2003
    Date of Patent: July 10, 2007
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Yun-Feng Chang, Stephen N. Vaughn, Kenneth R. Clem, Luc R. Martens, Weiguo Hu
  • Patent number: 7122500
    Abstract: The invention relates to a molecular sieve catalyst composition, to a method of making or forming the molecular sieve catalyst composition, and to a conversion process using the catalyst composition. In particular, the invention is directed to making a formulated molecular sieve catalyst composition with a synthesized molecular sieve having been recovered using a flocculant. The formulated composition is particularly useful in a conversion process for producing olefin(s), preferably ethylene and/or propylene, from a feedstock, preferably an oxygenate containing feedstock.
    Type: Grant
    Filed: September 22, 2003
    Date of Patent: October 17, 2006
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Yun-Feng Chang, Luc R. Martens, Stephen N. Vaughn
  • Patent number: 6652737
    Abstract: Disclosed is a method for treating naphtha. The method comprises providing naphtha feed, and the naphtha feed comprises naphthene ring-containing compounds. The naphtha feed is contacted with a ring opening catalyst containing a Group VIII metal under conditions effective to ring open the naphthene rings to form a ring opened product. The ring open product can then be contacted with a catalytic cracking catalyst under effective cracking conditions to form an olefin product. The olefin product will be particularly high in ethylene and propylene content.
    Type: Grant
    Filed: July 2, 2001
    Date of Patent: November 25, 2003
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Michele S. Touvelle, Darryl P. Klein, Tan-Jen Chen, Luc R. Martens, Edward S. Ellis
  • Patent number: 6440894
    Abstract: Methods of calcining non-zeolitic molecular sieve catalyst to remove most, if not nearly all, of halogen contained in the catalyst. One method includes heating the catalyst in a low moisture environment, followed by contacting the heated catalyst with air and/or steam. Another method includes steam-treating the catalyst at a temperature from 400° C. to 1000° C. The calcination methods provides a catalyst that contains from about 10 ppmw to about 600 ppmw chlorine, preferably 10 ppmw to about 200 ppmw chlorine, more preferably 10 ppmw to about 80 ppmw chlorine.
    Type: Grant
    Filed: June 25, 2001
    Date of Patent: August 27, 2002
    Assignee: ExxonMobil Chemical Patents, Inc.
    Inventors: Luc R. Martens, Stephen N. Vaughn, Albert E. Schweizer, John K. Pierce
  • Publication number: 20020063082
    Abstract: Disclosed is a method for treating naphtha. The method comprises providing naphtha feed, and the naphtha feed comprises naphthene ring-containing compounds. The naphtha feed is contacted with a ring opening catalyst containing a Group VIII metal under conditions effective to ring open the naphthene rings to form a ring opened product. The ring open product can then be contacted with a catalytic cracking catalyst under effective cracking conditions to form an olefin product. The olefin product will be particularly high in ethylene and propylene content.
    Type: Application
    Filed: July 2, 2001
    Publication date: May 30, 2002
    Inventors: Michele S. Touvelle, Darryl P. Klein, Tan-Jen Chen, Luc R. Martens, Edward S. Ellis