Patents by Inventor Stacey Ian Zones

Stacey Ian Zones 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: 9783461
    Abstract: Provided is an improved process for olefin oligomerization allowing one to realize superior selectivity. The process comprises contacting a hydrocarbon feed comprised of straight and branched chain olefins under oligomerization conditions with a catalyst comprising delaminated SSZ-70. The delaminated SSZ-70 offers a zeolite layer with a single unit cell of thickness in one dimension, allowing for elimination of mass transfer in comparison with regular SSZ-70. The result is superior selectivity.
    Type: Grant
    Filed: October 21, 2015
    Date of Patent: October 10, 2017
    Assignee: Chevron U.S.A. Inc.
    Inventors: Bi-Zeng Zhan, Stacey Ian Zones, Christopher M. Lew
  • Patent number: 9738537
    Abstract: Crystalline molecular sieves and their synthesis using quaternary N-methyl-diisoalkylammonium cations as organic structure directing agents are disclosed. The structure directing agent has the following structure (1): in which R1 is selected from hydrogen, a methyl group, an ethyl group, a propyl group, and a hydroxymethyl group; and R2, R3, R4 and R5 are independently selected from a methyl group, an ethyl group, and a propyl group.
    Type: Grant
    Filed: July 21, 2016
    Date of Patent: August 22, 2017
    Assignee: Chevron U.S.A. Inc.
    Inventor: Stacey Ian Zones
  • Patent number: 9738838
    Abstract: Provided is an improved hydroprocessing process allowing one to realize superior isoselectivity. The process comprises contacting a feed comprised of normal hydrocarbons under hydroprocessing conditions with a catalyst comprising delaminated SSZ-70. The delaminated SSZ-70 has been found to provide unexpected improvements in the catalysis of hydroprocessing hydrocarbons. Delaminated SSZ-70 offers a zeolite layer with a single unit cell of thickness in one dimension, allowing an elimination of mass transfer in comparison with non-delaminated SSZ-70.
    Type: Grant
    Filed: October 21, 2015
    Date of Patent: August 22, 2017
    Assignee: Chevron U.S.A. Inc.
    Inventors: Bi-Zeng Zhan, Stacey Ian Zones, Christopher M. Lew
  • Publication number: 20170233260
    Abstract: Uses are disclosed for a new crystalline molecular sieve designated SSZ-102 synthesized using an N,N?-dimethyl-1,4-diazabicyclo[2.2.2]octane dication as a structure directing agent. SSZ-102 has ESV framework topology.
    Type: Application
    Filed: May 3, 2017
    Publication date: August 17, 2017
    Inventors: Dan Xie, Stacey Ian Zones
  • Patent number: 9718049
    Abstract: The present invention is directed to the synthesis of novel delaminated layered zeolite precursor materials prepared by fluoride/chloride anion-promoted exfoliation. The method comprises, for example, using a combination of fluoride and chloride anions at a mild pH in aqueous solution to affect delamination of a layered zeolite precursor. The method can also comprise using a combination of fluoride and chloride anions in a non-aqueous solution comprising an organic solvent. The method may be used in conjunction with either acidification or sonication, or both. The resulting delaminated zeolite precursors are then isolated. Precursors that are then isolated lack amorphous silica content. The UCB-1 product is an example of such a novel oxide material and is obtained in yields in excess of 90% without the need for sonication.
    Type: Grant
    Filed: December 31, 2014
    Date of Patent: August 1, 2017
    Assignees: The Regents of the University of California, Chevron U.S.A. Inc.
    Inventors: Alexander Katz, Isao Ogino, Stacey Ian Zones
  • Patent number: 9718051
    Abstract: The present invention is directed to an alumino-borosilicate SSZ-57 zeolite having enhanced large pore selectivity. The alumino-borosilicate SSZ-57 zeolite of the present invention is characterized as having substantially all of its aluminum atoms located within regions of the zeolite structure which form the 12 ring channels.
    Type: Grant
    Filed: February 25, 2014
    Date of Patent: August 1, 2017
    Assignee: Chevron U.S.A. Inc.
    Inventors: Stacey Ian Zones, Cong-Yan Chen, Annabelle Benin
  • Patent number: 9718048
    Abstract: The present invention is directed to the synthesis of novel delaminated layered zeolite precursor materials prepared by fluoride/chloride anion-promoted exfoliation. The method comprises, for example, using a combination of fluoride and chloride anions at a mild pH in a non-aqueous solution to affect delamination of a layered zeolite precursor, generally comprising an organic solvent. The method may be used in conjunction with either acidification or sonication, or both. The resulting delaminated zeolite precursors are then isolated. Precursors that are then isolated lack amorphous silica content. The UCB-1 product is an example of such a novel oxide material and is obtained in yields in excess of 90% without the need for sonication.
    Type: Grant
    Filed: December 31, 2014
    Date of Patent: August 1, 2017
    Assignees: The Regents of the University of California, Chevron U.S.A. Inc.
    Inventors: Alexander Katz, Isao Ogino, Stacey Ian Zones
  • Patent number: 9708192
    Abstract: A method is disclosed for preparing pure phase aluminosilicate molecular sieves having the CHA framework type using a trimethylphenylammonium cation as a structure directing agent.
    Type: Grant
    Filed: November 25, 2014
    Date of Patent: July 18, 2017
    Assignee: Chevron U.S.A. Inc.
    Inventors: Dan Xie, Stacey Ian Zones
  • Patent number: 9700878
    Abstract: Uses for a new crystalline molecular sieve designated SSZ-98 are disclosed. SSZ-98 has the ERI framework type and is synthesized using a N,N?-dimethyl-1,4-diazabicyclo[2.2.2]octane dication as a structure directing agent.
    Type: Grant
    Filed: July 2, 2015
    Date of Patent: July 11, 2017
    Assignee: Chevron U.S.A. Inc.
    Inventors: Dan Xie, Stacey Ian Zones, Christopher Michael Lew, Tracy Margaret Davis
  • Patent number: 9694353
    Abstract: A new crystalline zinc (silico)aluminophosphate molecular sieve designated SSZ-90 is disclosed. SSZ-90 is isostructural with the DFO framework type and is synthesized using an ionic liquid as both the solvent and the structure directing agent. The ionic liquid [Q+A?] comprises a cation (Q+) selected from the group consisting of 1,3-diisopropylimidazolium, 1,3-diisobutylimidazolium, and 1-isopropyl-3-isobutylimidazolium and an anion (A?) which is not detrimental to the formation of the molecular sieve.
    Type: Grant
    Filed: October 7, 2015
    Date of Patent: July 4, 2017
    Assignee: Chevron U.S.A. Inc.
    Inventors: Annabelle Benin, Stacey Ian Zones, Cong-Yan Chen, Dan Xie
  • Patent number: 9687830
    Abstract: Provided is a process of conducting a Baeyer-Villiger oxidation which comprises contacting a ketone and an oxidant in the presence of an Sn-DZ-1 catalyst to thereby oxidize the ketone to an ester. The Sn-DZ-1 catalyst comprises Sn heteroatoms on the external surface of the zeolitic material lattice framework, and B heteroatoms, or silanols created from boron hydrolysis, throughout the remainder of the lattice framework.
    Type: Grant
    Filed: September 8, 2015
    Date of Patent: June 27, 2017
    Assignees: Chevron U.S.A., Inc., The Regents of the University of California
    Inventors: Xiaoying Ouyang, Stacey Ian Zones, Alexander S. Katz
  • Publication number: 20170157600
    Abstract: A new crystalline molecular sieve designated SSZ-95 is disclosed. In general, SSZ-95 is synthesized from a reaction mixture suitable for synthesizing MTT-type molecular sieves and maintaining the mixture under crystallization conditions sufficient to form product. The product molecular sieve is subjected to a pre-calcination step, and ion-exchange to remove extra-framework cations, and a post-calcination step. The molecular sieve has a MTT-type framework and a H-D exchangeable acid site density of 0 to 50% relative to molecular sieve SSZ-32.
    Type: Application
    Filed: February 21, 2017
    Publication date: June 8, 2017
    Applicant: CHEVRON U.S.A. INC.
    Inventors: ADEOLA FLORENCE OJO, YIHUA ZHANG, GUAN-DAO LEI, STACEY IAN ZONES
  • Publication number: 20170100711
    Abstract: A new crystalline zinc (silico)aluminophosphate molecular sieve designated SSZ-90 is disclosed. SSZ-90 is isostructural with the DFO framework type and is synthesized using an ionic liquid as both the solvent and the structure directing agent. The ionic liquid [Q+A?] comprises a cation (Q+) selected from the group consisting of 1,3-diisopropylimidazolium, 1,3-diisobutylimidazolium, and 1-isopropyl-3-isobutylimidazolium and an anion (A?) which is not detrimental to the formation of the molecular sieve.
    Type: Application
    Filed: October 7, 2015
    Publication date: April 13, 2017
    Inventors: Annabelle Benin, Stacey Ian Zones, Cong-Yan Chen, Dan Xie
  • Patent number: 9598289
    Abstract: A new crystalline molecular sieve designated SSZ-102 having ESV framework topology is disclosed. SSZ-102 is synthesized using an N,N?-dimethyl-1,4-diazabicyclo[2.2.2]octane dication as a structure directing agent.
    Type: Grant
    Filed: October 24, 2014
    Date of Patent: March 21, 2017
    Assignee: Chevron U.S.A. Inc.
    Inventors: Dan Xie, Stacey Ian Zones
  • Patent number: 9586829
    Abstract: A new crystalline molecular sieve designated SSZ-27 is disclosed. SSZ-27 is synthesized using a hexamethyl [4.3.3.0] propellane-8,11-diammonium cation as a structure directing agent.
    Type: Grant
    Filed: May 21, 2015
    Date of Patent: March 7, 2017
    Assignee: Chevron U.S.A. Inc.
    Inventors: Stacey Ian Zones, Dan Xie, Robert James Saxton
  • Patent number: 9586830
    Abstract: A method for making a new crystalline molecular sieve designated SSZ-27 is disclosed. SSZ-27 is synthesized using a hexamethyl [4.3.3.0] propellane-8,11-diammonium cation as a structure directing agent.
    Type: Grant
    Filed: May 21, 2015
    Date of Patent: March 7, 2017
    Assignee: Chevron U.S.A. Inc.
    Inventors: Stacey Ian Zones, Dan Xie, Robert James Saxton
  • Patent number: 9573122
    Abstract: Small crystal LTL framework type zeolites, characterized as polycrystalline aggregates, each of the aggregates comprising a plurality of spherical or cube-like crystallites and wherein each crystallite has an average crystallite size of from 10 to 50 nm, are disclosed. Such zeolites can be prepared by hydrothermal conversion of FAU framework type zeolites at low H2O/SiO2 mole ratios.
    Type: Grant
    Filed: October 2, 2014
    Date of Patent: February 21, 2017
    Assignee: Chevron U.S.A. Inc.
    Inventors: Dan Xie, Stacey Ian Zones, Robert James Saxton
  • Patent number: 9573124
    Abstract: A new crystalline molecular sieve designated SSZ-95 is disclosed. In general, SSZ-95 is synthesized from a reaction mixture suitable for synthesizing MTT-type molecular sieves and maintaining the mixture under crystallization conditions sufficient to form product. The product molecular sieve is subjected to a pre-calcination step, and ion-exchange to remove extra-framework cations, and a post-calcination step. The molecular sieve has a MTT-type framework and a H-D exchangeable acid site density of 0 to 50% relative to molecular sieve SSZ-32.
    Type: Grant
    Filed: May 21, 2014
    Date of Patent: February 21, 2017
    Assignee: Chevron U.S.A. Inc.
    Inventors: Adeola Florence Ojo, Yihua Zhang, Stacey Ian Zones, Guan-Dao Lei
  • Patent number: 9573819
    Abstract: A method for making a new crystalline molecular sieve designated SSZ-102 is disclosed using an N,N?-dimethyl-1,4-diazabicyclo[2.2.2]octane dication as a structure directing agent. SSZ-102 has ESV framework topology.
    Type: Grant
    Filed: October 24, 2014
    Date of Patent: February 21, 2017
    Assignee: Chevron U.S.A. Inc.
    Inventors: Dan Xie, Stacey Ian Zones
  • Publication number: 20170022066
    Abstract: Crystalline molecular sieves and their synthesis using quaternary N-methyl-diisoalkylammonium cations as organic structure directing agents are disclosed. The structure directing agent has the following structure (1): in which R1 is selected from hydrogen, a methyl group, an ethyl group, a propyl group, and a hydroxymethyl group; and R2, R3, R4 and R5 are independently selected from a methyl group, an ethyl group, and a propyl group.
    Type: Application
    Filed: July 21, 2016
    Publication date: January 26, 2017
    Inventor: Stacey Ian Zones