Patents by Inventor Doron Levin

Doron Levin 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: 20040116749
    Abstract: A process is disclosed for producing &agr;-methylstyrene, acetone, and phenol wherein the amount of &agr;-methylstyrene produced may be controlled by selectively converting a portion of the cumene hydroperoxide to dimethyl phenyl carbinol, the hydrated form of &agr;-methylstyrene. The dimethyl phenyl carbinol thus produced will lead to increased production of &agr;-methylstyrene upon dehydration in the acid cleavage unit of the phenol plant. By controlling the fraction of the cumene hydroperoxide reduced to dimethyl phenyl carbinol, the amount of &agr;-methylstyrene produced in the plant can be continuously set to meet the demand of the market for &agr;-methylstyrene. Also disclosed is a non-acidic catalyst for reduction of cumene hydroperoxide.
    Type: Application
    Filed: December 16, 2002
    Publication date: June 17, 2004
    Inventors: Doron Levin, C. Morris Smith, Jose Guadalupe Santiesteban, James C. Vartuli
  • Publication number: 20040097770
    Abstract: The invention relates to a process for producing alkylated aromatic hydrocarbons, preferably with an oxygen or sulfur containing alkylating agent, in the presence of a multi-component molecular sieve catalyst composition that includes a molecular sieve and an active metal oxide. The invention is also directed to methods of making and formulating the multi-component molecular sieve catalyst composition useful in producing alkylated aromatics.
    Type: Application
    Filed: November 19, 2002
    Publication date: May 20, 2004
    Inventors: Jihad Mohammed Dakka, James Clarke Vartuli, John Scott Buchanan, Jose Guadalupe Santiesteban, Doron Levin
  • Publication number: 20040030213
    Abstract: The invention relates to a conversion process of a feedstock, preferably an oxygenated feedstock, into one or more olefin(s), preferably ethylene and/or propylene, in the presence of a molecular sieve catalyst composition that includes a molecular sieve and a Group 3 metal oxide and/or an oxide of a Lanthanide or Actinide series element. The invention is also directed to methods of making and formulating the molecular sieve catalyst composition useful in a conversion process of a feedstock into one or more olefin(s).
    Type: Application
    Filed: August 9, 2002
    Publication date: February 12, 2004
    Inventors: Doron Levin, James Clark Vartuli
  • Publication number: 20030187314
    Abstract: A method for making an organometallic treated molecular sieve is described in which a molecular sieve having at least one hydroxyl group and at least [AlO2] and [PO2] tetrahedral units and having an average pore dimension less than or equal to about 5Å is contacted with a solution comprising an organometallic compound and a non-proton donating solvent. The resulting organometallic treated molecular sieve has enhanced ethylene and/or propylene selectivity when used in the conversion of organic oxygenates to olefins. The ethylene and/or propylene selectivity, as well as catalyst life, are further enhanced when the resulting organometallic treated molecular sieve is combined with an oxide of at least one metal selected from Groups 2, 3 and Group 4 of the Periodic Table.
    Type: Application
    Filed: February 28, 2003
    Publication date: October 2, 2003
    Inventors: Kun Wang, Richard Earl Bare, Doron Levin, James Clark Vartuli, Guang Cao, Richard B. Hall
  • Publication number: 20030176752
    Abstract: The invention relates to a catalyst composition, a method of making the same and its use in the conversion of a feedstock, preferably an oxygenated feedstock, into one or more olefin(s), preferably ethylene and/or propylene The catalyst composition comprises a molecular sieve and at least one oxide of a metal from Group 4, optionally in combination with at least one metal from Groups 2 and 3, of the Periodic Table of Elements.
    Type: Application
    Filed: February 10, 2003
    Publication date: September 18, 2003
    Inventors: Doron Levin, James Clark Vartuli
  • Publication number: 20030176753
    Abstract: The invention relates to a catalyst composition, a method of making the same and its use in the conversion of a feedstock, preferably an oxygenated feedstock, into one or more olefin(s), preferably ethylene and/or propylene The catalyst composition comprises a molecular sieve and at least one oxide of a metal selected from Group 3 of the Periodic Table of Elements, the Lanthanide series of elements and the Actinide series of elements.
    Type: Application
    Filed: February 10, 2003
    Publication date: September 18, 2003
    Inventors: Doron Levin, James Clark Vartuli
  • Publication number: 20030176751
    Abstract: A porous crystalline material is described having the chabazite framework type and having a composition involving the molar relationship:
    Type: Application
    Filed: February 20, 2003
    Publication date: September 18, 2003
    Inventors: Karl G. Strohmaier, Sebastian C. Reyes, Doron Levin
  • Publication number: 20030171633
    Abstract: The invention relates to a catalyst composition, a method of making the same and its use in the conversion of a feedstock, preferably an oxygenated feedstock, into one or more olefin(s), preferably ethylene and/or propylene The catalyst composition comprises a molecular sieve and at least one metal oxide, such as a magnesium oxide that, when saturated with acetone and contacted with said acetone for 1 hour at 25° C., converts more than 80% of the acetone.
    Type: Application
    Filed: February 10, 2003
    Publication date: September 11, 2003
    Inventors: Teng Xu, Stephen N. Vaughn, Richard B. Hall, Doron Levin, James Clark Vartuli
  • Patent number: 6441251
    Abstract: A process for producing phenol and acetone from cumene hydroperoxide is described in which the cumene hydroperoxide is contacted with a solid-acid catalyst comprising an inorganic, porous, crystalline material, designated as M41S, exhibiting, after calcination, an x-ray diffraction pattern with at least one peak at a d-spacing greater than about 18 Angstrom Units with a relative intensity of 100 and a benzene adsorption capacity of greater than 15 grams of benzene per 100 grams of said material at 50 torr and 25° C., wherein said material comprises sulfonate functionality.
    Type: Grant
    Filed: September 4, 2001
    Date of Patent: August 27, 2002
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Doron Levin, Jose G. Santiesteban, Lei Zhang
  • Patent number: 6441252
    Abstract: An apparatus for producing phenol and acetone from cumene hydroperoxide comprises a reactive distillation column comprising at its upper portion a distillation column and at its lower portion a catalyst bed.
    Type: Grant
    Filed: November 14, 2001
    Date of Patent: August 27, 2002
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Doron Levin, Jose G. Santiesteban
  • Patent number: 6410804
    Abstract: A process for producing phenol and acetone from cumene hydroperoxide comprises: i) introducing a cumene hydroperoxide feed into a reactive distillation column comprising at its upper portion a distillation column and at its lower portion a catalyst bed, at a point above said catalyst bed; ii) mixing a diluting portion of acetone with said cumene hydroperoxide to provide a diluted cumene hydroperoxide; iii) directing said diluted cumene hydroperoxide through said catalyst bed under conditions sufficient to effect the exothermic decomposition of said cumene hydroperoxide to a product comprising a heavy fraction comprising phenol and a vaporized light fraction comprising acetone; iv) withdrawing said heavy fraction as bottoms from said column; v) flowing said vaporized light fraction upwards through the catalyst bed and at least a portion of the reactive distillation column; vi) condensing said light fraction to provide at least a portion of said diluting portion of acetone for subsequent mixing with said
    Type: Grant
    Filed: December 21, 1999
    Date of Patent: June 25, 2002
    Assignee: Exxon Mobil Oil Corporation
    Inventors: Doron Levin, Jose G. Santiesteban
  • Publication number: 20020058845
    Abstract: A process for producing phenol and acetone from cumene hydroperoxide comprises:
    Type: Application
    Filed: November 14, 2001
    Publication date: May 16, 2002
    Inventors: Doron Levin, Jose G. Santiesteban
  • Patent number: 6372949
    Abstract: A process for selectively converting a feed comprising oxygenate to normally liquid boiling range C5+ hydrocarbons in a single step is provided which comprises a) contacting the feed under oxygenate conversion conditions with a catalyst comprising a unidimensional 10-ring zeolite, e.g., one selected from the group consisting of ZSM-22, ZSM-23, ZSM-35, ZSM-48, ZSM-57, and ferrierite, at temperatures below 350° C. and oxygenate pressures above 40 psia (276 kPa); and b) recovering a normally liquid boiling range C5+ hydrocarbons-rich product stream, e.g, gasoline and distillate boiling range hydrocarbons or C4 to C12 olefins.
    Type: Grant
    Filed: October 15, 1999
    Date of Patent: April 16, 2002
    Assignee: Mobil Oil Corporation
    Inventors: Stephen H. Brown, Doron Levin, Reuel Shinnar, William A. Weber
  • Patent number: 6297406
    Abstract: A process for producing phenol and acetone from cumene hydroperoxide is described in which the cumene hydroperoxide is contacted with a solid-acid catalyst comprising a mixed oxide of cerium and a Group IVB metal.
    Type: Grant
    Filed: August 3, 1999
    Date of Patent: October 2, 2001
    Assignee: Mobil Oil Corporation
    Inventors: Doron Levin, Jose G. Santiesteban, James C. Vartuli
  • Patent number: 6169216
    Abstract: A process for producing phenol and acetone from cumene hydroperoxide is described in which the cumene hydroperoxide is contacted with a solid-acid catalyst comprising a sulfated transition metal oxide, preferably sulfated zirconia.
    Type: Grant
    Filed: April 22, 1999
    Date of Patent: January 2, 2001
    Assignee: Mobil Oil Corporation
    Inventors: Doron Levin, Jose G. Santiesteban, James C. Vartuli
  • Patent number: 6169215
    Abstract: A process for producing phenol and acetone from cumene hydroperoxide is described in which the cumene hydroperoxide is contacted with a solid-acid catalyst produced by calcining a source of a Group IVB metal oxide with a source of an oxyanion of a Group VIB metal at a temperature of at least 400°C.
    Type: Grant
    Filed: March 25, 1999
    Date of Patent: January 2, 2001
    Assignee: Mobil Oil Corporation
    Inventors: Doron Levin, Jose G. Santiesteban, James C. Vartuli
  • Patent number: 6114551
    Abstract: A method of synthesizing an olefin epoxidation catalyst comprises the step of treating a porous crystalline aluminosilicate material having an X-ray diffraction pattern including d-spacing maxima at 12.4.+-.0.25, 6.9.+-.0.15, 3.57.+-.0.07 and 3.42.+-.0.07 Angstrom, such as MCM-22, with a dealuminating agent under conditions effective to remove framework aluminium from the material and produce a dealuminated product. The dealuminated product is then treated with a titanium-containing material under conditions effective to insert titanium into the dealuminated product and produce a titanium-containing, dealuminated catalyst composition.The resultant catalyst is useful in the epoxidation of olefins, such as propylene and cyclohexene, with hydrogen peroxide and organic hydroperoxides.
    Type: Grant
    Filed: October 4, 1999
    Date of Patent: September 5, 2000
    Assignee: Mobil Oil Corporation
    Inventors: Doron Levin, Clarence D. Chang, Shifang Luo, Jose G. Santiesteban, James C. Vartuli