Patents by Inventor Yi-Gang Xiong

Yi-Gang Xiong 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).

  • Publication number: 20090193710
    Abstract: A fuel or fuel blendstock comprising ethanol, ethyl ethers, olefins, and alkanes. In some embodiments, the fuel or fuel blendstock of claim 1, wherein the fuel or fuel blendstock may have an octane number greater than 92 (RON+MON)/2). In other embodiments, the fuel or fuel blendstock may have a Reid vapor pressure less than 7.2 psi. Also disclosed is a process for the production of a fuel, the process including: contacting ethanol and at least one gasoline fraction including alkanes and olefins in the presence of a catalyst to form a fuel mixture including ethyl ethers, alkanes, unreacted olefins, and unreacted ethanol; and recovering the fuel mixture for use as a gasoline or gasoline blendstock without separation of the ethanol from the fuel mixture.
    Type: Application
    Filed: February 4, 2008
    Publication date: August 6, 2009
    Applicant: CATALYTIC DISTILLATION TECHNOLOGIES
    Inventors: Yi-Gang Xiong, Kerry L. Rock, Arvids Judzis, Mitchell E. Loescher
  • Patent number: 7431827
    Abstract: A process for the production of low sulfur, low olefin gasoline wherein a cracked naphtha, such as a full boiling range cracked naphtha, is first separated by fractional distillation into at least two fractions while simultaneously selectively hydrogenating the polyunsaturated compounds contained therein. The mono olefins in the light fraction are then subjected to etherification with alcohol to produce ethers or hydration with water to produce alcohols. The heavy fraction is subjected to sulfur removal by hydrodesulfurization or chemisorption. The two fractions are then combined to produce a low sulfur, low olefin gasoline.
    Type: Grant
    Filed: October 27, 2004
    Date of Patent: October 7, 2008
    Assignee: Catalytic Distillation Technologies
    Inventors: Kerry L. Rock, Yi-Gang Xiong, Arvids Judzis, Jr.
  • Publication number: 20060086645
    Abstract: A process for the production of low sulfur, low olefin gasoline wherein a cracked naphtha, such as a full boiling range cracked naphtha, is first separated by fractional distillation into at least two fractions while simultaneously selectively hydrogenating the polyunsaturated compounds contained therein. The mono olefins in the light fraction are then subjected to etherification with alcohol to produce ethers or hydration with water to produce alcohols. The heavy fraction is subjected to sulfur removal by hydrodesulfurization or chemisorption. The two fractions are then combined to produce a low sulfur, low olefin gasoline.
    Type: Application
    Filed: October 27, 2004
    Publication date: April 27, 2006
    Inventors: Kerry Rock, Yi-Gang Xiong, Arvids Judzis
  • Patent number: 6979756
    Abstract: Disclosed is a method of heat treating a molecular sieve. The method comprises providing a template-containing molecular sieve, heating the molecular sieve under conditions effective to remove a portion of the template from the molecular sieve, and cooling the heated molecular sieve to leave an amount of template effective to cover catalytic sites within the molecular sieve. A catalyst composition is also provided which comprises a molecular sieve having a microporous structure and a binder, wherein between 10 and 90 vol % of the microporous structure is occupied by a material, the material comprising a template or a carbonaceous residue of a template, and the catalyst composition exhibits a Davison Index of not greater than 30.
    Type: Grant
    Filed: October 28, 2002
    Date of Patent: December 27, 2005
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Shun C. Fung, Marcel J. G. Janssen, Stephen N. Vaughn, Machteld M. Mertens, Albert Edward Schweizer, Cornelius W. M. Van Oorschot, Luc R. M. Martens, Richard B. Hall, Wilfried J. Mortier, Ronald G. Searle, Yi-Gang Xiong
  • Publication number: 20040048734
    Abstract: A molecular sieve and a molecular sieve catalyst containing a surface heat impregnated with a metal. The molecular sieve is heated in the presence of a metal containing solution at a temperature between 30° C. and 400° C. then separated from the metal containing solution. The molecular sieve and molecular sieve catalyst is used to make olefin from an oxygenate feedstock.
    Type: Application
    Filed: September 15, 2003
    Publication date: March 11, 2004
    Inventors: Zhongmin Liu, Lixin Yang, Lei Xu, Chenglin Sun, Yi-Gang Xiong
  • Publication number: 20030055304
    Abstract: Disclosed is a method of heat treating a molecular sieve. The method comprises providing a template-containing molecular sieve, heating the molecular sieve under conditions effective to remove a portion of the template from the molecular sieve, and cooling the heated molecular sieve to leave an amount of template effective to cover catalytic sites within the molecular sieve. A catalyst composition is, also provided which comprises a molecular sieve having a microporous structure and a binder, wherein between 10 and 90 vol % of the microporous structure is occupied by a material, the material comprising a template or a carbonaceous residue of a template, and the catalyst composition exhibits a Davison Index of not greater than 30.
    Type: Application
    Filed: October 28, 2002
    Publication date: March 20, 2003
    Inventors: Shun C. Fung, Marcel J.G. Janssen, Stephen N. Vaughn, Machteld M. Mertens, Albert Edward Schweizer, Cornelius W.M. Van Oorschot, Luc R.M. Martens, Richard B. Hall, Wilfried J. Mortier, Ronald G. Searle, Yi-Gang Xiong
  • Publication number: 20030018230
    Abstract: A molecular sieve and a molecular sieve catalyst containing a surface heat impregnated with a metal. The molecular sieve is heated in the presence of a metal containing solution at a temperature between 30° C. and 400° C. then separated from the metal containing solution. The molecular sieve and molecular sieve catalyst is used to make olefin from an oxygenate feedstock.
    Type: Application
    Filed: July 30, 2002
    Publication date: January 23, 2003
    Inventors: Zhongmin Liu, Lixin Yang, Lei Xu, Chenglin Sun, Yi-Gang Xiong
  • Patent number: 6503863
    Abstract: Disclosed is a method of heat treating a molecular sieve. The method comprises providing a template-containing molecular sieve, heating the molecular sieve under conditions effective to remove a portion of the template from the molecular sieve, and cooling the heated molecular sieve to leave an amount of template effective to cover catalytic sites within the molecular sieve. A catalyst composition is also provided which comprises a molecular sieve having a microporous structure and a binder, wherein between 10 and 90 vol % of the microporous structure is occupied by a material, the material comprising a template or a carbonaceous residue of a template, and the catalyst composition exhibits a Davison Index of not greater than 30.
    Type: Grant
    Filed: August 15, 2001
    Date of Patent: January 7, 2003
    Assignee: ExxonMobil Chemical Patents, Inc.
    Inventors: Shun C. Fung, Marcel J. G. Janssen, Stephen N. Vaughn, Machteld M. Mertens, Albert Edward Schweizer, Luc R. M. Martens, Richard B. Hall, Wilfried J. Mortier, Ronald G. Searle, Yi-Gang Xiong
  • Patent number: 6448197
    Abstract: A molecular sieve and a molecular sieve catalyst containing a surface heat impregnated with a metal. The molecular sieve is heated in the presence of a metal containing solution at a temperature between 30° C. and 400° C. then separated from the metal containing solution. The molecular sieve and molecular sieve catalyst is used to make olefin from an oxygenate feedstock.
    Type: Grant
    Filed: July 13, 2000
    Date of Patent: September 10, 2002
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Zhongmin Liu, Lixin Yang, Lei Xu, Chenglin Sun, Yi-Gang Xiong
  • Patent number: 6395674
    Abstract: Disclosed is a method of heat treating a molecular sieve. The method comprises providing a template-containing molecular sieve, heating the molecular sieve under conditions effective to remove a portion of the template from the molecular sieve, and cooling the heated molecular sieve to leave an amount of template effective to cover catalytic sites within the molecular sieve. A catalyst composition is also provided which comprises a molecular sieve having a microporous structure and a binder, wherein between 10 and 90 vol % of the microporous structure is occupied by a material, the material comprising a template or a carbonaceous residue of a template, and the catalyst composition exhibits a Davison Index of not greater than 30.
    Type: Grant
    Filed: September 21, 1999
    Date of Patent: May 28, 2002
    Assignee: Exxon Mobil Chemical Patents, Inc.
    Inventors: Shun C. Fung, Marcel J. G. Janssen, Stephen N. Vaughn, Machteld M. Mertens, Albert E. Schweizer, Luc R. M. Martens, Richard B. Hall, Wilfried J. Mortier, Ronald G. Searle, Yi-Gang Xiong
  • Publication number: 20020055433
    Abstract: Disclosed is a method of heat treating a molecular sieve. The method comprises providing a template-containing molecular sieve, heating the molecular sieve under conditions effective to remove a portion of the template from the molecular sieve, and cooling the heated molecular sieve to leave an amount of template effective to cover catalytic sites within the molecular sieve. A catalyst composition is also provided which comprises a molecular sieve having a microporous structure and a binder, wherein between 10 and 90 vol % of the microporous structure is occupied by a material, the material comprising a template or a carbonaceous residue of a template, and the catalyst composition exhibits a Davison Index of not greater than 30.
    Type: Application
    Filed: August 15, 2001
    Publication date: May 9, 2002
    Inventors: Shun C. Fung, Marcel J.G. Janssen, Stephen N. Vaughn, Machteld M. Mertens, Albert Edward Schweizer, Cornelius W.M Van Oorschot, Luc R.M. Martens, Richard B. Hall, Wilfried J. Mortier, Ronald G. Searle, Yi-Gang Xiong