Patents by Inventor Jihad M. Dakka

Jihad M. Dakka 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: 20210229081
    Abstract: Isobutanol may be converted into predominantly C12+ olefin oligomers under specified conditions. Such methods may comprise: contacting a feed comprising isobutanol with a zeolite solid acid catalyst having a MWW framework under conditions effective to convert the isobutanol into a product comprising Can olefin oligomers, wherein n is an integer having a value of two or greater and about 80 wt. % or greater of the Can olefin oligomers are larger than C8.
    Type: Application
    Filed: December 29, 2020
    Publication date: July 29, 2021
    Inventors: Jihad M Dakka, Patrick L Hanks, Brandon M Carcuffe, Cynthia F Omilian, Ralph C DeHaas, Arsam Behkish
  • Publication number: 20210198173
    Abstract: A process for oxidizing methyl-substituted biphenyl compounds comprises contacting a mixture comprising isomers of at least one methyl-substituted biphenyl compound with a source of oxygen, wherein the mixture comprises at least 20 wt % of isomer(s) having a methyl group at a 2-position or a 3-position on at least one benzene ring and at least 50 wt % of isomer(s) having a methyl group at a 4-position on at least one benzene ring, wherein said percentages are based on the total weight of the at least one methylbiphenyl compound in the mixture.
    Type: Application
    Filed: February 19, 2021
    Publication date: July 1, 2021
    Inventors: Jihad M. Dakka, Bryan A. Patel, Michael Salciccioli, Stephen Zushma
  • Publication number: 20210188735
    Abstract: The application relates to processes and systems that use a furfural compound for producing five-membered carbocyclic rings that are unsaturated, such as cyclopentene and cyclopentadiene. Examples methods for conversion of furfural compounds may include converting a furfural compound to at least a five-membered, saturated carbocyclic ring, and converting the five-membered, saturated carbocyclic ring in a presence of a catalyst to at least a five-membered, unsaturated carbocyclic ring.
    Type: Application
    Filed: October 22, 2020
    Publication date: June 24, 2021
    Inventors: Kun Wang, Aaron Sattler, Jihad M. Dakka
  • Publication number: 20210179511
    Abstract: A method may include reacting at least a naphtha range alkane with oxygen and to produce oxygenate products; reacting at least a portion of the oxygenate products to produce condensed products; and reacting at least a portion of the condensed products with at least hydrogen to produce a distillate range product.
    Type: Application
    Filed: October 22, 2020
    Publication date: June 17, 2021
    Inventors: Kun Wang, Jihad M. Dakka
  • Publication number: 20210108235
    Abstract: Hydroxycarboxylic acids may be biosynthesized from a carbonaceous feedstock and then isolated through forming and subsequently hydrolyzing an intermediate sophorolipid. After biosynthesizing a hydroxycarboxylic acid in a cell culture medium or otherwise providing a hydroxycarboxylic acid in a first aqueous medium, the hydroxycarboxylic acid and glucose may be converted into at least one sophorolipid by a suitable microorganism or an enzyme cocktail. The at least one sophorolipid may be then be separated from the cell culture medium or first aqueous medium and then hydrolyzed in a second aqueous medium to form the hydroxycarboxylic acid and glucose as free components separate from the cell culture medium or first aqueous medium. The hydroxycarboxylic acid is present as a phase separate from the second aqueous medium and the glucose remains in the second aqueous medium.
    Type: Application
    Filed: October 12, 2020
    Publication date: April 15, 2021
    Inventors: Xiaozhou Zhang, Zarath M Summers, Partha Nandi, Mark P Hagemeister, Jihad M Dakka, Mohor Chatterjee, Vera Grankina
  • Patent number: 10974962
    Abstract: A method for producing a metal nitride and/or a metal carbide, a metal nitride and/or metal carbide optionally produced according to the method, and the use of the metal nitride and/or carbide in catalysis optionally catalytic hydroprocessing. Optionally, the method comprises: i) contacting at least one metal oxide comprising at least one first metal M1 with a cyanometallate comprising at least one second metal M2 to form a reaction mixture; and, ii) subjecting the reaction mixture to a temperature of at least 300° C. for a reaction period. Optionally, the metal nitride and/or metal carbide is a metal nitride comprising tungsten nitride.
    Type: Grant
    Filed: September 12, 2017
    Date of Patent: April 13, 2021
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Partha Nandi, Quddus A. Nizami, Christine E. Kliewer, Andrew J. Stella, Jihad M. Dakka, Himanshu Gupta
  • Patent number: 10919830
    Abstract: Systems and methods are provided for conversion of gas phase reactants including CO and H2 to C2+ products using multiple catalysts in a single reactor while reducing or minimizing deactivation of the catalysts. Separate catalysts can be used that correspond to a first catalyst, such as a catalyst for synthesis of methanol from synthesis gas, and a second catalyst, such as a catalyst for conversion of methanol to a desired C2+ product. The separate catalysts can be loaded into the reactor in distinct layers that are separated by spacer layers. The spacer layers can correspond to relatively inert particles, such as silica particles. Optionally, the spacer layer can include an adsorbent, such as boron supported on alumina or boron carbide particles. The adsorbent can be suitable for selective adsorption of the one or more reaction products (such as one or more reaction by-products), to allow for further reduction or minimization of the deactivation of the conversion catalysts.
    Type: Grant
    Filed: January 9, 2020
    Date of Patent: February 16, 2021
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Jihad M. Dakka, Michael J. Sikorsky, Aruna Ramkrishnan, Chuansheng Bai, Anita S. Lee, Preeti Kamakoti, Anjaneya S. Kovvali, Jenna L. Walp
  • Patent number: 10858300
    Abstract: A hydrocarbon conversion process is described. The process includes contacting in a reactor an inert gas with one or more catalyst compositions suitable for methylation of toluene and hydrogenation of phenol; contacting a reducing agent with the one or more catalyst compositions under conditions suitable for reducing metal oxide content of the catalyst composition; contacting at least part of toluene and/or benzene-containing with a oxygenate in the presence of the one or more catalyst compositions and under conditions effective to convert toluene to xylenes and produce a reactor effluent stream comprising para-xylene and having a lower concentration of phenol than the toluene-containing stream; separating at least one para-xylene-enriched stream from the reactor effluent stream; and separating from the at least one para-xylene enriched stream at least one toluene-enriched stream and at least one para-xylene-product stream. An apparatus for carrying out such a process is also described.
    Type: Grant
    Filed: March 30, 2018
    Date of Patent: December 8, 2020
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Jihad M. Dakka, Robert G. Tinger
  • Patent number: 10858600
    Abstract: Systems and a method for manufacturing a base stock from a light gas stream are provided. An example method includes oxidizing the light gas stream to form a raw ethylene stream. Water is removed from the raw ethylene stream, and carbon monoxide in the raw ethylene stream is oxidized. Carbon dioxide is separated from the raw ethylene stream, and the raw ethylene stream is oligomerized to form a raw oligomer stream. A light olefinic stream is distilled from the raw oligomer stream and a light alpha olefin is recovered from the light olefinic stream. A heavy olefinic stream is distilled from the raw oligomer stream. The heavy olefinic stream is hydro-processed to form a hydro-processed stream. the hydro-processed stream is distilled to form the base stock.
    Type: Grant
    Filed: August 15, 2019
    Date of Patent: December 8, 2020
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Guang Cao, Jihad M. Dakka, Suzzy C. Ho, Brian M. Weiss
  • Publication number: 20200325086
    Abstract: In a process for producing a methyl-substituted biphenyl compound, at least one methyl-substituted cyclohexylbenzene compound of the formula: wherein each of m and n is independently 1, 2, or 3, is contacted with hydrogen in the presence of a hydrogenation catalyst to produce a hydrogenation reaction product comprising at least one methyl-substituted bicyclohexane compound, and the methyl-substituted bicyclohexane compound is then contacted with a dehydrogenation catalyst to produce a dehydrogenation reaction product comprising at least one methyl-substituted biphenyl compound.
    Type: Application
    Filed: February 22, 2017
    Publication date: October 15, 2020
    Inventors: Jihad M. Dakka, Lorenzo C. Decaul, Michael P. Lanci, Wei Tang
  • Publication number: 20200325096
    Abstract: A process for oxidizing methyl-substituted biphenyl compounds comprises contacting a mixture comprising isomers of at least one methyl-substituted biphenyl compound with a source of oxygen, wherein the mixture comprises at least 20 wt % of isomer(s) having a methyl group at a 2-position or a 3-position on at least one benzene ring and at least 50 wt % of isomer(s) having a methyl group at a 4-position on at least one benzene ring, wherein said percentages are based on the total weight of the at least one methylbiphenyl compound in the mixture.
    Type: Application
    Filed: March 1, 2017
    Publication date: October 15, 2020
    Inventors: Jihad M. Dakka, Bryan A Patel, Michael Salciccioli, Stephen Zushma
  • Publication number: 20200231525
    Abstract: Systems and methods are provided for conversion of gas phase reactants including CO and H2 to C2+ products using multiple catalysts in a single reactor while reducing or minimizing deactivation of the catalysts. Separate catalysts can be used that correspond to a first catalyst, such as a catalyst for synthesis of methanol from synthesis gas, and a second catalyst, such as a catalyst for conversion of methanol to a desired C2+ product. The separate catalysts can be loaded into the reactor in distinct layers that are separated by spacer layers. The spacer layers can correspond to relatively inert particles, such as silica particles. Optionally, the spacer layer can include an adsorbent, such as boron supported on alumina or boron carbide particles. The adsorbent can be suitable for selective adsorption of the one or more reaction products (such as one or more reaction by-products), to allow for further reduction or minimization of the deactivation of the conversion catalysts.
    Type: Application
    Filed: January 9, 2020
    Publication date: July 23, 2020
    Inventors: Jihad M. Dakka, Michael J. Sikorsky, Aruna Ramkrishnan, Chuansheng Bai, Anita S. Lee, Preeti Kamakoti, Anjaneya S. Kovvali, Jenna L. Walp
  • Patent number: 10639619
    Abstract: Catalyst compositions with improved alkylation activity and corresponding methods for making such catalyst compositions are provided. The catalyst(s) correspond to solid acid catalysts formed by exposing a catalyst precursor with a zeolitic framework structure to a molten metal salt that includes fluorine, such as a molten metal fluoride. The resulting fluorinated solid acid catalysts can have improved alkylation activity while having a reduced or minimized amount of structural change due to the exposure to the molten metal fluoride. This is in contrast to fluorinated solid acid catalysts that are exposed to higher severity forms of fluorination, such as exposure to ammonium fluoride or HF. SnF2 is an example of a suitable molten metal fluoride.
    Type: Grant
    Filed: June 26, 2018
    Date of Patent: May 5, 2020
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Partha Nandi, Matthew S. Ide, Jihad M. Dakka, Quddus A. Nizami, Mobae Afeworki
  • Publication number: 20200095510
    Abstract: The present disclosure relates to processes for producing biofuel compositions by processing hydrocarbon co-feed and a bio-oil obtained via hydrothermal liquifaction (HTL) of a cellulosic biomass to form an HTL oil. The cellulosic mass can be processed at an operating temperature of about 425° C. or less and an operating pressure of about 200 atm or less. The HTL oil is co-processed with a hydrocarbon co-feed (e.g., petroleum fraction) in a cracking unit, such as an FCC unit, a coker unit or a visbreaking unit, in the presence of a catalyst to produce a cracked product (biofuel). The bio content of the cracked product provides RIN credits for the cracked product.
    Type: Application
    Filed: September 24, 2019
    Publication date: March 26, 2020
    Inventors: William J. Novak, Kirsten E. Schutt, Jihad M. Dakka, Hyung Rae Kim, Xiaochun Xu
  • Publication number: 20200063045
    Abstract: Systems and a method for manufacturing a base stock from a light gas stream are provided. An example method includes oxidizing the light gas stream to form a raw ethylene stream. Water is removed from the raw ethylene stream, and carbon monoxide in the raw ethylene stream is oxidized. Carbon dioxide is separated from the raw ethylene stream, and the raw ethylene stream is oligomerized to form a raw oligomer stream. A light olefinic stream is distilled from the raw oligomer stream and a light alpha olefin is recovered from the light olefinic stream. A heavy olefinic stream is distilled from the raw oligomer stream. The heavy olefinic stream is hydro-processed to form a hydro-processed stream. the hydro-processed stream is distilled to form the base stock.
    Type: Application
    Filed: August 15, 2019
    Publication date: February 27, 2020
    Inventors: Guang Cao, Jihad M. Dakka, Suzzy C. Ho, Brian M. Weiss
  • Patent number: 10513475
    Abstract: Methods and systems for converting hydrocarbons including exposing a portion of a hydroperoxide-containing feed including tert-butyl hydroperoxide to a solid deperoxidation catalyst under decomposition conditions to form an oxidation effluent comprising tert-butyl alcohol, wherein the solid deperoxidation catalyst comprises a manganese oxide octahedral molecular sieve, are provided herein. Further methods and systems for converting the oxidation effluent to an alkylation product are also provided herein.
    Type: Grant
    Filed: December 13, 2017
    Date of Patent: December 24, 2019
    Assignee: EXXONMOBIL RESEARCH AND ENGINEERING COMPANY
    Inventors: Sophie Liu, Jihad M. Dakka, Partha Nandi, Sara Yacob, Quddus A. Nizami, Chuansheng Bai
  • Patent number: 10450242
    Abstract: A process for upgrading an ethane-containing C5? paraffin stream comprises contacting the paraffin stream with an oxygen containing gas in the presence of a selective oxidation catalyst under conditions to selectively oxidize at least part of the ethane in the paraffin stream and produce a first product stream comprising ethylene. At least part of the first product stream may then be contacted with an isoparaffin-containing feed in the presence of a solid alkylation catalyst and under conditions to alkylate at least part of the isoparaffin with at least part of the ethylene and produce a second product stream comprising C6+ alkylate. Alternatively, at least part of the ethylene in the first product stream may be dimerized before the alkylation step.
    Type: Grant
    Filed: December 7, 2017
    Date of Patent: October 22, 2019
    Assignee: EXXONMOBIL RESEARCH AND ENGINEERING COMPANY
    Inventors: Guang Cao, Jihad M. Dakka
  • Patent number: 10421699
    Abstract: Systems and methods are provided for forming alkylate from a tertiary alcohol feed. Olefins for the alkylation reaction can be generated from a portion of the tertiary alcohol feed. The tertiary alcohol feed can be obtained, for example, by selective oxidation to convert a portion of an isoparaffin-containing feed into alcohol, such as conversion of isobutane to t-butyl alcohol. The alcohol can then be converted to an alkene, such as conversion of t-butyl alcohol to isobutene, in the alkylation reaction environment in the presence of a solid acid catalyst. The solid acid catalyst can then facilitate dimerization of the alkenes (e.g. isobutene) to form C8+ olefins (e.g. isooctene). A catalyst having an MWW framework is an example of a suitable solid acid catalyst.
    Type: Grant
    Filed: December 13, 2017
    Date of Patent: September 24, 2019
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Jihad M. Dakka, David B. Spry, Cynthia F. Omilian, Matthew S. Ide, Jenna L. Walp, Ralph C. Dehaas
  • Patent number: 10421698
    Abstract: Systems and methods are provided for production of high octane hydrocarbon from an isoparaffin feed using oxidation acid catalysis chemistry.
    Type: Grant
    Filed: December 13, 2017
    Date of Patent: September 24, 2019
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Jihad M. Dakka, Matthew S. Ide, David B. Spry, Sumod Kalakkunnath, Guang Cao, Patrick L. Hanks, Cynthia F. Omilian
  • Publication number: 20190284051
    Abstract: A method for producing a metal nitride and/or a metal carbide, a metal nitride and/or metal carbide optionally produced according to the method, and the use of the metal nitride and/or carbide in catalysis optionally catalytic hydroprocessing. Optionally, the method comprises: i) contacting at least one metal oxide comprising at least one first metal M1 with a cyanometallate comprising at least one second metal M2 to form a reaction mixture; and, ii) subjecting the reaction mixture to a temperature of at least 300° C. for a reaction period. Optionally, the metal nitride and/or metal carbide is a metal nitride comprising tungsten nitride.
    Type: Application
    Filed: September 12, 2017
    Publication date: September 19, 2019
    Inventors: Partha Nandi, Guddus A. Nizami, Christine E. Klievver, Andrew J. Stella, Jihad M. Dakka, Himanshu Gupta