Patents by Inventor Stacey I. Zones

Stacey I. 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).

  • Publication number: 20240091750
    Abstract: A novel synthetic crystalline molecular sieve material, designated boron SSZ-41 is provided. The boron SSZ-41 is a boronzincosilicate molecular sieve having the framework structure of SSZ-41. It can be synthesized using 1,1?-(1,4-butanediyl)bis[4-aza-1-azoniabicyclo[2.2.2]octane] dications as a structure directing agent. The boronzincosilicate SSZ-41 may be used in organic compound conversion reactions and/or sorptive processes.
    Type: Application
    Filed: August 30, 2023
    Publication date: March 21, 2024
    Applicant: Chevron U.S.A. Inc.
    Inventors: Stacey I. ZONES, Cong-Yan CHEN
  • Publication number: 20230382745
    Abstract: A novel synthetic crystalline molecular sieve material, designated SSZ-113 is provided which exhibits increased acidity. The SSZ-113 can be synthesized using 1,3-bis(2,3-dimethyl-1H-imidazolium)propane dications as a structure directing agent. The synthesis employs a boron pathway to achieve increased acid sites. The SSZ-113 of increased acidity may be used in organic compound conversion and/or sorptive processes.
    Type: Application
    Filed: May 30, 2023
    Publication date: November 30, 2023
    Applicant: Chevron U.S.A. Inc.
    Inventor: Stacey I. Zones
  • Publication number: 20230382744
    Abstract: A novel synthetic crystalline borongermanosilicate molecular sieve material, designated boron SSZ-117x, is provided. The boron SSZ-117x can be synthesized using N,N,N,3,5-pentamethyladamantan-1-ammonium cations as a structure directing agent. The synthesis employs a boron pathway to achieve the boron molecular sieve. The boron SSZ-117x may be used in organic compound conversion reactions, such as reforming, and/or sorptive processes.
    Type: Application
    Filed: May 30, 2023
    Publication date: November 30, 2023
    Applicant: Chevron U.S.A. Inc.
    Inventors: Stacey I. Zones, Cong-Yan Chen
  • Publication number: 20230382746
    Abstract: A novel synthetic crystalline aluminogermanosilicate molecular sieve material, designated SSZ-121 is provided which exhibits increased acidity. The SSZ-121 can be synthesized using 1,3-bis(1-adamantyl)imidazolium cations as a structure directing agent. The synthesis employs a boron pathway to achieve increased acid sites. The SSZ-121 of increased acidity may be used in organic compound conversion reactions and/or sorptive processes.
    Type: Application
    Filed: May 30, 2023
    Publication date: November 30, 2023
    Applicant: Chevron U.S.A. Inc.
    Inventor: Stacey I. Zones
  • Publication number: 20230381759
    Abstract: A novel synthetic crystalline molecular sieve material, designated boron SSZ-121 is provided. The boron SSZ-121 can be synthesized using 1,3-bis(1-adamantyl)imidazolium cations as a structure directing agent. The boron SSZ-121 may be used in organic compound conversion reactions and/or sorptive processes.
    Type: Application
    Filed: May 30, 2023
    Publication date: November 30, 2023
    Applicant: Chevron U.S.A. Inc.
    Inventors: Stacey I. Zones, Cong-Yan Chen
  • Publication number: 20230381760
    Abstract: Provided is a novel synthetic crystalline borongermanosilicate molecular sieve material, designated boron SSZ-113. The boron SSZ-113 can be synthesized using 1,3 bis(2,3-dimethyl-1H-imidazolium) propane dications as a structure directing agent. The boron SSZ-113 may be used in organic compound conversion reactions and/or sorptive processes, and in particular, in reforming reactions.
    Type: Application
    Filed: May 30, 2023
    Publication date: November 30, 2023
    Applicant: Chevron U.S.A. Inc.
    Inventors: Stacey I. Zones, Cong-Yan Chen
  • Publication number: 20230382748
    Abstract: A novel synthetic crystalline aluminogermanosilicate molecular sieve material, designated SSZ-117x, is provided which exhibits increased acidity. The SSZ-117x can be synthesized using N,N,N,3,5-pentamethyladamantan-1-ammonium cations as a structure directing agent. The synthesis employs a boron pathway to achieve increased acid sites. The SSZ-117x of increased acidity may be used in organic compound conversion reactions and/or sorptive processes.
    Type: Application
    Filed: May 30, 2023
    Publication date: November 30, 2023
    Applicant: Chevron U.S.A. Inc.
    Inventor: Stacey I. Zones
  • Publication number: 20230372912
    Abstract: Provided is a method of preparing a delaminated Al-SSZ-70 zeolite. The method combines direct hydrothermal synthesis with CTA+ cations and an imidazolium OSDA. A post-synthetic high shear mixing treatment is also preferred. In one embodiment, an Al-SSZ-70 zeolite seed is used, preferably with a Si/Al ratio of at least 50.
    Type: Application
    Filed: May 23, 2023
    Publication date: November 23, 2023
    Applicants: Chevron U.S.A. Inc., The Regents of the University of California
    Inventors: Alexander KATZ, Abraham MARTINEZ, Le XU, Stacey I. ZONES
  • Publication number: 20230141033
    Abstract: A process for selectively making hydrocracked n-paraffins from hydrocarbon compositions comprising heavy n-paraffins is disclosed. The process generally comprises the use of a hydrocracking catalyst comprising an unsulfided low acidity noble metal containing zeolite. The invention is useful for making lighter n-paraffin products for various applications, generally including upgrading hydrocarbon feedstocks to produce fuels, solvents, lubricants, chemicals and other hydrocarbonaceous compositions, and more particularly, as feedstocks for ethylene and linear alkyl benzene production and as jet and diesel fuel blend components.
    Type: Application
    Filed: April 6, 2021
    Publication date: May 11, 2023
    Inventors: Michael J. GIRGIS, Stacey I. ZONES
  • Patent number: 9636669
    Abstract: A zeolite material is provided having non-boron 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. The lattice framework of the zeolite material comprises large pore 12 member ring or larger openings at the external surface of the framework, and 10 member ring or smaller openings beneath the external surface large pore openings. Also provided is a process for preparing the zeolitic material.
    Type: Grant
    Filed: February 20, 2014
    Date of Patent: May 2, 2017
    Assignees: The Regents of the University of California, Chevron U.S.A. Inc.
    Inventors: Stacey I. Zones, Alexander S. Katz, Isao Ogino, Xiaoying Ouyong
  • Patent number: 9522390
    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: June 15, 2011
    Date of Patent: December 20, 2016
    Assignees: The Regents of the University of California, Chevron U.S.A. Inc.
    Inventors: Alexander Katz, Isao Ogino, Stacey I. Zones
  • Publication number: 20140241982
    Abstract: A zeolite material is provided having non-boron 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. The lattice framework of the zeolite material comprises large pore 12 member ring or larger openings at the external surface of the framework, and 10 member ring or smaller openings beneath the external surface large pore openings. Also provided is a process for preparing the zeolitic material.
    Type: Application
    Filed: February 20, 2014
    Publication date: August 28, 2014
    Inventors: Stacey I. Zones, Alexander S. Katz, Isao Ogino, Xiaoying Ouyong
  • Patent number: 8763364
    Abstract: A method of treating a cold-start engine exhaust gas stream comprising hydrocarbons and other pollutants, the method comprising: flowing the exhaust gas stream over a molecular sieve bed, the molecular sieve bed comprising an alkali metal cation-exchanged molecular sieve having intersecting 10- and 12-membered ring pore channels, to provide a first exhaust stream; flowing the first exhaust gas stream over a catalyst to convert any residual hydrocarbons and other pollutants contained in the first exhaust gas stream to innocuous products to provide a treated exhaust stream; and discharging the treated exhaust stream into the atmosphere.
    Type: Grant
    Filed: April 18, 2011
    Date of Patent: July 1, 2014
    Assignee: Chevron U.S.A. Inc.
    Inventors: Shanmugam Palani Elangovan, Tatsuya Okubo, Stacey I. Zones, Cong-Yan Chen, Allen W. Burton, Jr.
  • Patent number: 8734758
    Abstract: A method for synthesizing a molecular sieve comprising providing a reaction mixture sufficient to synthesize the molecular sieve, maintaining the reaction mixture under crystallization conditions, monitoring at least one viscometric parameter of the reaction mixture, and determining an endpoint based on the monitoring of the at least one viscometric parameter.
    Type: Grant
    Filed: November 5, 2010
    Date of Patent: May 27, 2014
    Assignee: Chevron U.S.A. Inc.
    Inventors: James N. Ziemer, Tracy M. Davis, Stacey I. Zones, Adeola Ojo
  • Patent number: 8697018
    Abstract: The invention relates generally to molecular sieve SSZ-25 and its use in the reduction of oxides of nitrogen in a gas stream such as the exhaust from an internal combustion engine.
    Type: Grant
    Filed: August 5, 2011
    Date of Patent: April 15, 2014
    Assignee: Chevron U.S.A. Inc.
    Inventors: Stacey I. Zones, Robert J. Saxton
  • Patent number: 8580228
    Abstract: The present invention relates to a process for reducing cold start emissions in an exhaust gas stream (such as from an internal combustion engine) by contacting the exhaust stream with a combination of molecular sieves comprising (1) a small pore crystalline molecular sieve or mixture of molecular sieves having pores no larger than 8 membered rings selected from the group consisting of SSZ-13, SSZ-16, SSZ-36, SSZ-39, SSZ-50, SSZ-52 and SSZ-73 molecular sieve and having a mole ratio at least 10 of (a) an oxide of a first tetravalent element to (b) an oxide of a trivalent element, pentavalent element, second tetravalent element which is different from said first tetravalent element or mixture thereof and (2) a medium-large pore crystalline molecular sieve having pores at least as large as 10 membered rings selected from the group consisting of SSZ-26, SSZ-33, SSZ-64, zeolite Beta, CIT-1, CIT-6 and ITQ-4 and having a mole ratio of at least 10 of (a) an oxide of a first tetravalent element to (b) an oxide of a tr
    Type: Grant
    Filed: December 20, 2007
    Date of Patent: November 12, 2013
    Assignee: Chevron U.S.A. Inc.
    Inventors: Stacey I. Zones, Cabral M. Williams, Tecle S. Rufael, Allen W. Burton
  • Patent number: 8545798
    Abstract: The present invention is directed to a method for preparing a new crystalline molecular sieve designated SSZ-81 using a structure directing agent selected from 1,5-bis(1-azonia-bicyclo[2.2.2]octane)pentane dications, 1,5-bis(1,4-diazabicyclo[2.2.2]octane)pentane dications, and mixtures thereof.
    Type: Grant
    Filed: June 16, 2011
    Date of Patent: October 1, 2013
    Assignee: Chevron U.S.A. Inc.
    Inventors: Stacey I. Zones, Anna Jackowski
  • Patent number: 8545805
    Abstract: The invention is directed to a method for making small crystal zeolites, such as small crystal SSZ-32, in the absence of an amine component.
    Type: Grant
    Filed: November 5, 2010
    Date of Patent: October 1, 2013
    Assignee: Chevron U.S.A. Inc.
    Inventors: Stacey I. Zones, Bowman Lee, Lun-Teh Yuen, Tracy M. Davis, James N. Ziemer, Adeola Ojo
  • Patent number: 8546628
    Abstract: The present invention is directed to a hydroisomerization process using a new crystalline molecular sieve designated SSZ-81, which is synthesized using a structure directing agent selected from 1,5-bis(1-azonia-bicyclo[2.2.2]octane)pentane dications, 1,5-bis(1,4-diazabicyclo[2.2.2]octane)pentane dications, and mixtures thereof.
    Type: Grant
    Filed: June 16, 2011
    Date of Patent: October 1, 2013
    Assignee: Chevron U.S.A. Inc.
    Inventors: Cong-Yan Chen, Stacey I. Zones
  • Patent number: 8540963
    Abstract: The present invention is directed to a new crystalline molecular sieve designated SSZ-81, which is synthesized using a structure directing agent selected from 1,5-bis(1-azonia-bicyclo[2.2.2]octane)pentane dications, 1,5-bis(1,4-diazabicyclo[2.2.2]octane)pentane dications, and mixtures thereof.
    Type: Grant
    Filed: June 16, 2011
    Date of Patent: September 24, 2013
    Assignee: Chevron U.S.A. Inc.
    Inventors: Stacey I. Zones, Anna Jackowski