Patents by Inventor John P. McWilliams
John P. McWilliams 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).
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Patent number: 7902103Abstract: The invention relates to the use of particulate silicone resins in the absence of added organic solvents with particulate inorganic materials to form structured bodies and in particular molecular sieve containing structured bodies. The silicone resin is used in the form of a particulate with an average particle size of less than 700 um. Upon calcining, the silicone resin is converted to silica which acts as a binder.Type: GrantFiled: June 30, 2009Date of Patent: March 8, 2011Assignee: ExxonMobil Research and Engineering CompanyInventors: Jean W. Beeckman, Glenn R. Sweeten, Arthur W. Chester, John P. McWilliams, Dominick N. Mazzone
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Patent number: 7671248Abstract: A process for producing sec-butylbenzene comprises contacting a feed comprising benzene and ethylene under alkylation conditions with catalyst comprising (i) a molecular sieve 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 and (ii) at least one metal selected from Group 10 of the Periodic Table of Elements to produce an alkylation effluent comprising sec-butylbenzene.Type: GrantFiled: August 5, 2005Date of Patent: March 2, 2010Assignee: ExxonMobil Chemical Patents Inc.Inventors: Ajit B. Dandekar, John P. McWilliams, Thomas Francis Degnan, Jr., Michael Hryniszak
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Publication number: 20090270246Abstract: The invention relates to the use of particulate silicone resins in the absence of added organic solvents with particulate inorganic materials to form structured bodies and in particular molecular sieve containing structured bodies. The silicone resin is used in the form of a particulate with an average particle size of less than 700 um. Upon calcining, the silicone resin is converted to silica which acts as a binder.Type: ApplicationFiled: June 30, 2009Publication date: October 29, 2009Inventors: Jean W. Beeckman, Glenn R. Sweeten, Arthur W. Chester, John P. McWilliams, Dominick N. Mazzone
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Patent number: 7572749Abstract: The invention relates to the use of particulate silicone resins in the absence of added organic solvents with particulate inorganic materials to form structured bodies and in particular molecular sieve containing structured bodies. The silicone resin is used in the form of a particulate with an average particle size of less than 700 um. Upon calcining, the silicone resin is converted to silica which acts as a binder.Type: GrantFiled: July 26, 2005Date of Patent: August 11, 2009Assignee: ExxonMobil Research and Engineering CompanyInventors: Jean W. Beeckman, Glenn R. Sweeten, Arthur W. Chester, John P. McWilliams, Dominick N. Mazzone
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Patent number: 7569739Abstract: The present invention provides a process for producing an alkylaromatic compound comprising the step of contacting an alkylatable aromatic compound with an alkylating agent under alkylation conditions in the presence of a alkylation catalyst comprising phosphorus and a porous crystalline inorganic oxide material having an X-ray diffraction pattern including the d-spacing maxima at 12.4±0.25, 6.9±0.15, 3.57±0.07 and 3.42±0.07 Angstrom.Type: GrantFiled: October 17, 2007Date of Patent: August 4, 2009Assignee: ExxonMobil Chemical Patents Inc.Inventors: Ajit B. Dandekar, John P. McWilliams, Thomas Francis Degnan, Michael Hryniszak, Donald J. Klocke, Wieslaw Jerzy Roth
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Publication number: 20080154082Abstract: A process for producing sec-butylbenzene comprises contacting a feed comprising benzene and ethylene under alkylation conditions with catalyst comprising (i) a molecular sieve 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 and (ii) at least one metal selected from Group 10 of the Periodic Table of Elements to produce an alkylation effluent comprising sec-butylbenzene.Type: ApplicationFiled: August 5, 2005Publication date: June 26, 2008Applicant: EXXONMOBIL CHEMICAL PATENTS INC.Inventors: Ajit B. Dandekar, John P. McWilliams, Thomas Francis Degnan, Michael Hryniszak
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Patent number: 7297829Abstract: The present invention provides a process for producing an alkylaromatic compound comprising the step of contacting an alkylatable aromatic compound with an alkylating agent under alkylation conditions in the presence of a alkylation catalyst comprising phosphorus and a porous crystalline inorganic oxide material having an X-ray diffraction pattern including the d-spacing maxima at 12.4±0.25, 6.9±0.15, 3.57±0.07 and 3.42±0.07 Angstrom.Type: GrantFiled: May 13, 2005Date of Patent: November 20, 2007Assignee: ExxonMobil Chemical Patents Inc.Inventors: Ajit B. Dandekar, John P. McWilliams, Thomas Francis Degnan, Michael Hryniszak, Donald J. Klocke, Wieslaw Jerzy Roth
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Patent number: 7038100Abstract: The present invention provides a process for producing an alkylaromatic compound comprising the step of contacting an alkylatable aromatic compound with an alkylating agent under alkylation conditions in the presence of a alkylation catalyst comprising phosphorus and a porous crystalline inorganic oxide material having an X-ray diffraction pattern including the d-spacing maxima at 12.4±0.25, 6.9±0.15, 3.57±0.07 and 3.42±0.07 Angstrom.Type: GrantFiled: April 30, 2001Date of Patent: May 2, 2006Assignee: ExxonMobil Chemical Patents, Inc.Inventors: Ajit B. Dandekar, John P. McWilliams, Thomas Francis Degnan, Michael Hryniszak, Donald J. Klocke, Wieslaw Jerzy Roth
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Patent number: 7019185Abstract: In a method for producing monoalkylated aromatic compounds, an aromatic feed is contacted with an alkylating agent in the presence of a catalyst comprising a molecular sieve 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. The catalyst also contains at least one metal cation selected from Groups 1–4 and 7–16 of the Periodic Table of Elements, wherein the metal cation is present in an amount of at least 0.5% by weight of the catalyst, whereby selectivity of the catalyst to produce monoalkylates over polyalkylates is improved as compared with the identical catalyst but without the metal cation present.Type: GrantFiled: December 6, 2002Date of Patent: March 28, 2006Assignee: ExxonMobil Chemical Patents Inc.Inventors: Ajit Bhaskar Dandekar, John P. McWilliams, Thomas Francis Degnan, Jr., Michael Hryniszak
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Patent number: 6911568Abstract: A process for alkylating an alkylatable aromatic compound is disclosed, in which the process includes: (a) contacting the alkylatable aromatic compound and an alkylating agent with an alkylation catalyst under alkylation conditions; and (b) when said alkylation catalyst has become at least partially deactivated, contacting said alkylation catalyst with a C1-C8 hydrocarbon under alkylation catalyst reactivation conditions. The process provides comparable rejuvenation of catalyst activity as air rengenaration with minimal or no increase in amounts of undesirable byproducts such as polypropylbenzenes in the case of benzene alkylation with propylene.Type: GrantFiled: April 28, 2000Date of Patent: June 28, 2005Assignee: ExxonMobil Oil CorporationInventors: Ajit B. Dandekar, John P. McWilliams, C. Morris Smith, Michael A. Better, Wei-Ping Tai
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Patent number: 6909026Abstract: The catalyst becomes at least partially deactivated by sorbing catalyst poisons present in the feed during a process for alkylating aromatics by contacting a feed containing benzene, toluene, xylenes, alkylbenzenes, naphthalene or substituted naphthalenes under liquid phase alkylating conditions with C2-C16 olefins in the presence of MCM-22, MCM-36, MCM-49, MCM-56, ZSM-5, ZSM-11, ZSM-12, ZSM-23, ZSM-35, ZSM-48, ZSM-50, ZSM-4, ZSM-18, ZSM-20, Zeolite X, Zeolite Y, USY, mordenite or offretite to provide an alkylated aromatic product. The at least partially deactivated catalyst can be treated in situ by contacting with at least one polar compound having a dipole moment of at least 0.05 Debyes and selected from the group consisting of acetic acid, formic acid, water, and carbon monoxide, under conditions of temperature and pressure employed in the liquid phase alkylating conditions which are sufficient to at least partially desorb the catalyst poison from the catalyst.Type: GrantFiled: December 13, 2002Date of Patent: June 21, 2005Assignee: ExxonMobil Oil CorporationInventors: Ajit B. Dandekar, Thomas Francis Degnan, John P. McWilliams, Chaya R. Venkat
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Patent number: 6753452Abstract: A process is described for removing polar compounds from an aromatic feedstock which contains polar compounds. The process comprises contacting the feedstock in an adsorption zone at a temperature of less than or equal to 130° C. with an adsorbent selective for the adsorption of said polar compounds and comprising a molecular sieve having surface cavities with cross-sectional dimensions greater than 5.6 Angstroms. A treated feedstock substantially free of said polar compounds can then be fed to an alkylation zone for contact under liquid phase alkylation conditions with an alkylating agent in the presence of an alkylation catalyst.Type: GrantFiled: February 27, 2003Date of Patent: June 22, 2004Assignee: ExxonMobil Chemical Patents Inc.Inventors: Chaya R. Venkat, Yun-Yang Huang, Thomas Francis Degnan, Jr., John P. McWilliams, Ronald A. Weiss
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Publication number: 20040111001Abstract: In a method for producing monoalkylated aromatic compounds, an aromatic feed is contacted with an alkylating agent in the presence of a catalyst comprising a molecular sieve 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. The catalyst also contains at least one metal cation selected from Groups 1-4 and 7-16 of the Periodic Table of Elements, wherein the metal cation is present in an amount of at least 0.5% by weight of the catalyst, whereby selectivity of the catalyst to produce monoalkylates over polyalkylates is improved as compared with the identical catalyst but without the metal cation present.Type: ApplicationFiled: December 6, 2002Publication date: June 10, 2004Inventors: Ajit Bhaskar Dandekar, John P. McWilliams, Thomas Francis Degnan, Michael Hryniszak
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Publication number: 20030149324Abstract: A process for removing polar compounds from an aromatic feedstock containing polar compounds comprising the steps of:Type: ApplicationFiled: February 27, 2003Publication date: August 7, 2003Inventors: Chaya R. Venkat, Yun-Yang Huang, Thomas Francis Degnan, John P. McWilliams, Ronald A. Weiss
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Publication number: 20030125592Abstract: 1.Type: ApplicationFiled: December 13, 2002Publication date: July 3, 2003Inventors: Ajit B. Dandekar, Thomas Francis Degnan, John P. McWilliams, Chaya R. Venkat
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Patent number: 6525234Abstract: A process for alkylating aromatics comprises: i) contacting a feed containing alkylatable aromatic, e.g., benzene, under liquid phase alkylating conditions with an alkylating agent, e.g., ethylene, in the presence of an alkylation catalyst comprising a porous crystalline material, e.g., MCM-22, to provide an alkylated aromatic product during which contacting said catalyst becomes at least partially deactivated by sorbing catalyst poisons present in said feed; ii) treating said at least partially deactivated catalyst in situ by contacting with at least one polar compound, e.g., water or acetic acid, having a dipole moment of at least 0.05 Debyes under conditions of temperature and pressure employed in said liquid phase alkylating conditions which are sufficient to at least partially desorb said catalyst poison from said catalyst; and iii) collecting said alkylated aromatic product.Type: GrantFiled: November 21, 2000Date of Patent: February 25, 2003Assignee: ExxonMobil Oil CorporationInventors: Ajit B. Dandekar, Thomas Francis Degnan, John P. McWilliams, Chaya R. Venkat
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Publication number: 20030028060Abstract: The present invention provides a process for producing an alkylaromatic compound comprising the step of contacting an alkylatable aromatic compound with an alkylating agent under alkylation conditions in the presence of a alkylation catalyst comprising phosphorus and a porous crystalline inorganic oxide material having an X-ray diffraction pattern including the d-spacing maxima at 12.4±0.25, 6.9±0.15, 3.57±0.07 and 3.42±0.07 Angstrom.Type: ApplicationFiled: April 30, 2001Publication date: February 6, 2003Inventors: Ajit B. Dandekar, John P. McWilliams, Thomas Francis Degnan, Michael Hryniszak, Donald J. Klocke, Wieslaw Jerzy Roth
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Patent number: 6143261Abstract: MCM-56 and MCM-49 have been demonstrated to be effective catalysts for the reduction of nitrogen oxide (NO.sub.x) emissions in a net oxidizing environment such as Selective Catalytic Reduction or lean burn engine exhaust applications. MCM-56 and MCM-49 can be utilized as a component of a spherical or cylindrical catalyst particle or as a wash coat on a ceramic or metallic monolith. Optionally, a transition metal such as copper, can be added to the catalyst for improved activity.Type: GrantFiled: December 15, 1997Date of Patent: November 7, 2000Assignee: Exxon Research and Engineering CompanyInventors: Daria N. Lissy, David O. Marler, John P. McWilliams, David S. Shihabi, Sanjay B. Sharma
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Patent number: 5614079Abstract: A molecular sieve catalyst is composited with an inert binder derived from an organic silicon source and organic polymer. The catalyst is used in dewaxing of petroleum chargestocks.Type: GrantFiled: September 29, 1994Date of Patent: March 25, 1997Assignee: Mobil Oil CorporationInventors: Maria D. Farnos, Thomas R. Forbus, Jr., John P. McWilliams, David S. Shihabi
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Patent number: 5589147Abstract: There is presented a process for the treatment of exhaust gas, which process uses a specially prepared catalyst composition, for the selective catalytic reduction of NO.sub.x contained in the exhaust gas. An embodiment of the process of this invention comprises a catalytic stage to selectively catalytically reduce NO.sub.x over a catalyst composition comprising a molecular sieve that has been treated with a metal in a way effective to maximize metal dispersion. The catalyst of this invention typically comprises a silica, titania, or zirconia binder, e.g. a binder including a high molecular weight, hydroxyl functional silicone resin. The catalyst of this invention may be formed into a desired shape, e.g., by extrusion, and finished in a humidified atmosphere after forming.Type: GrantFiled: July 7, 1994Date of Patent: December 31, 1996Assignee: Mobil Oil CorporationInventors: Maria D. Farnos, John P. McWilliams, Sanjay B. Sharma, David S. Shihabi