Patents by Inventor Ivy D. Johnson
Ivy D. Johnson 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: 9365431Abstract: Methods are provided for synthesizing ZSM-58 crystals with an improved morphology and/or an improved size distribution. By controlling the conditions during synthesis of the ZSM-58 crystals, crystals of a useful size with a narrow size distribution can be generated. Additionally, by controlling the ratio of water content to silica content in the synthesis mixture, it has unexpectedly been found that ZSM-58 crystals can be formed with an improved morphology. The improved morphology can result in ZSM-58 crystals with a more uniform size across the various dimensions of the crystal, which allows for more uniform diffusion within the crystal. This is in contrast to conventionally synthesized crystals, where the size of the crystal can vary along different axes of the crystals.Type: GrantFiled: November 8, 2013Date of Patent: June 14, 2016Assignee: ExxonMobil Research and Engineering CompanyInventors: Ivy D. Johnson, Nadya A. Hrycenko, Barbara Carstensen, Machteld Mertens, Brita Engels
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Patent number: 9168483Abstract: Methods are provided for forming zeolite crystals suitable for gas phase separations with transport characteristics that are stable over time. The zeolitic materials and/or corresponding methods of synthesis or treatment described herein provide for improved stability in the early stages of process operation for some types of gas phase separations. The methods allow for synthesis of DDR type zeolites that have reduced contents of alkali metal impurities. The synthetic methods for reducing the non-framework alkali metal atom or cation impurity content appear to have little or no impact on the DDR crystal structure and morphology.Type: GrantFiled: November 8, 2013Date of Patent: October 27, 2015Assignee: EXXONMOBIL RESEARCH AND ENGINEERING COMPANYInventors: Peter I. Ravikovitch, Barbara Carstensen, Charanjit S. Paur, Ivy D. Johnson, Harry W. Deckman
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Patent number: 9169173Abstract: The present invention provides a process for producing a monoalkylated benzene comprising the step of contacting benzene with an alkylating agent in the presence of a catalyst composition under effective alkylation conditions to form said monoalkylated benzene and polyalkylated benzene, said catalyst composition comprising MCM-56 and a binder, such that the crystal/binder weight ratio in said catalyst composition is from about 20/80 to about 80/20, wherein said polyalkylated benzene comprises dialkylated benzene and trialkylated benzene, and the weight ratio of trialkylated benzene to dialkylated benzene is in the range from about 0.08 to about 0.12.Type: GrantFiled: May 2, 2014Date of Patent: October 27, 2015Assignee: ExxonMobil Chemical Patents Inc.Inventors: Matthew J. Vincent, Terry E. Helton, Ivy D. Johnson
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Publication number: 20150182947Abstract: Methods are provided for synthesizing ZSM-58 crystals with an improved morphology and/or an improved size distribution. By controlling the conditions during synthesis of the ZSM-58 crystals, crystals of a useful size with a narrow size distribution can be generated. Additionally, by controlling the ratio of water content to silica content in the synthesis mixture, it has unexpectedly been found that ZSM-58 crystals can be formed with an improved morphology. The improved morphology can result in ZSM-58 crystals with a more uniform size across the various dimensions of the crystal, which allows for more uniform diffusion within the crystal. This is in contrast to conventionally synthesized crystals, where the size of the crystal can vary along different axes of the crystals.Type: ApplicationFiled: December 17, 2014Publication date: July 2, 2015Applicant: EXXONMOBIL RESEARCH AND ENGINEERING COMPANYInventors: Ivy D. Johnson, Tilman W. Beutel, Peter I. Ravikovitch, Harry W. Deckman, Jack W. Johnson, Jean W. Beeckman, Natalie A. Fassbender, Nadya A. Hrycenko, Randy J. Smiley
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Patent number: 8859836Abstract: A crystalline molecular sieve of MFS framework type manufactured by the method disclosed herein. A hydrocarbon conversion process using the crystalline molecular sieve is disclosed.Type: GrantFiled: May 1, 2012Date of Patent: October 14, 2014Assignee: ExxonMobil Chemical Patents Inc.Inventors: Machteld M. Mertens, An Verberckmoes, Ivy D. Johnson
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Publication number: 20140243567Abstract: The present invention provides a process for producing a monoalkylated benzene comprising the step of contacting benzene with an alkylating agent in the presence of a catalyst composition under effective alkylation conditions to form said monoalkylated benzene and polyalkylated benzene, said catalyst composition comprising MCM-56 and a binder, such that the crystal/binder weight ratio in said catalyst composition is from about 20/80 to about 80/20, wherein said polyalkylated benzene comprises dialkylated benzene and trialkylated benzene, and the weight ratio of trialkylated benzene to dialkylated benzene is in the range from about 0.08 to about 0.12.Type: ApplicationFiled: May 2, 2014Publication date: August 28, 2014Inventors: Matthew J. Vincent, Terry E. Helton, Ivy D. Johnson
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Patent number: 8816145Abstract: The present invention provides a process for producing a monoalkylated aromatic compound comprising the step of contacting an alkylatable aromatic compound with an alkylating agent in the presence of a catalyst composition under effective alkylation conditions, said catalyst composition comprising MCM-56 and a binder, such that the crystal/binder weight ratio in the catalyst composition is from above 20/80 to about 80/20.Type: GrantFiled: August 24, 2012Date of Patent: August 26, 2014Assignee: ExxonMobil Chemical Patents Inc.Inventors: Matthew J. Vincent, Terry E. Helton, Ivy D. Johnson
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Publication number: 20140234207Abstract: The present invention provides an improved method for manufacturing high quality porous crystalline MCM-56 material. It also relates to the MCM-56 material manufactured by the improved method, catalyst compositions comprising same and use thereof in a process for catalytic conversion of hydrocarbon compounds. One such conversion process involves production of monoalkylated aromatic compounds, particularly ethylbenzene and cumene, by the liquid or partial liquid phase alkylation of alkylatable aromatic compound, particularly benzene.Type: ApplicationFiled: August 16, 2012Publication date: August 21, 2014Applicant: EXXONMOBIL CHEMICAL COMPANY-LAW TECHNOLOGYInventors: Ivy D. Johnson, Nadya Ann Hrycenko, Wieslaw J. Roth, Terry E. Helton
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Publication number: 20140194653Abstract: A process for converting hydrocarbons comprising the step of contacting said hydrocarbons under conversion conditions with a crystalline molecular sieve having a pore size in the range of from about 2 to about 19 ?, said molecular sieve made by a method comprising the steps of (a) providing a mixture comprising at least one source of ions of tetravalent element (Y), at least one trivalent element hydroxide source (OH?), and water, said mixture having a solid-content in the range of from about 15 wt. % to about 50 wt. % .%, preferably of from about 20% to about 30%; and (b) treating said mixture to form the desired crystalline molecular sieve with stirring at crystallization conditions sufficient to obtain a weight hourly throughput from about 0.005 to about 1 hr?1, wherein said crystallization conditions comprise a temperature in the range of from about 200° C. to about 500° C. and a crystallization time less than 100 hr, wherein said crystalline molecular sieve has a zeolite framework type of MFI.Type: ApplicationFiled: January 20, 2014Publication date: July 10, 2014Inventors: Ivy D. Johnson, Wenyih F. Lai
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Publication number: 20140157986Abstract: Methods are provided for forming zeolite crystals suitable for gas phase separations with transport characteristics that are stable over time. The zeolitic materials and/or corresponding methods of synthesis or treatment described herein provide for improved stability in the early stages of process operation for some types of gas phase separations. The methods allow for synthesis of DDR type zeolites that have reduced contents of alkali metal impurities. The synthetic methods for reducing the non-framework alkali metal atom or cation impurity content appear to have little or no impact on the DDR crystal structure and morphology.Type: ApplicationFiled: November 8, 2013Publication date: June 12, 2014Applicant: ExxonMobil Research and Engineering CompanyInventors: Peter I. Ravikovitch, Barbara Carstensen, Charanjit S. Paur, Ivy D. Johnson, Harry W. Deckman
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Publication number: 20140161717Abstract: Methods are provided for synthesizing ZSM-58 crystals with an improved morphology and/or an improved size distribution. By controlling the conditions during synthesis of the ZSM-58 crystals, crystals of a useful size with a narrow size distribution can be generated. Additionally, by controlling the ratio of water content to silica content in the synthesis mixture, it has unexpectedly been found that ZSM-58 crystals can be formed with an improved morphology. The improved morphology can result in ZSM-58 crystals with a more uniform size across the various dimensions of the crystal, which allows for more uniform diffusion within the crystal. This is in contrast to conventionally synthesized crystals, where the size of the crystal can vary along different axes of the crystals.Type: ApplicationFiled: November 8, 2013Publication date: June 12, 2014Applicant: EXXONMOBIL RESEARCH AND ENGINEERING COMPANYInventors: Ivy D. Johnson, Nadya A. Hrycenko, Barbara Carstensen, Machteld Mertens, Brita Engels
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Patent number: 8748684Abstract: A method of crystallizing a crystalline molecular sieve having a pore size in the range of from about 2 to about 19 ?, said method comprising the steps of (a) providing a mixture comprising at least one source of ions of tetravalent element (Y), at least one hydroxide source (OH), and water, said mixture having a solid-content in the range of from about 15 wt. % to about 50 wt. %; and (b) treating said mixture to form the desired crystalline molecular sieve with stirring at crystallization conditions sufficient to obtain a weight hourly throughput from about 0.005 to about 1 hr?1, wherein said crystallization conditions comprise a temperature in the range of from about 200° C. to about 500° C. and a crystallization time less than 100 hr.Type: GrantFiled: August 7, 2013Date of Patent: June 10, 2014Assignee: ExxonMobile Chemical Patents Inc.Inventors: Ivy D. Johnson, Wenyih Frank Lai
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Patent number: 8673263Abstract: A method of crystallizing a crystalline molecular sieve having a pore size in the range of from about 2 to about 19 ?, said method comprising the steps of (a) providing a mixture comprising at least one source of ions of tetravalent element (Y), at least one trivalent element hydroxide source (OH?), and water, said mixture having a solid-content in the range of from about 20% to about 30%; and (b) treating said mixture to form the desired crystalline molecular sieve with stirring at crystallization conditions sufficient to obtain a weight hourly throughput from about 0.005 to about 1 hr?1, wherein said crystallization conditions comprise a temperature in the range of from about 200° C. to about 500° C. and a crystallization time less than 100 hr, wherein said crystalline molecular sieve has a zeolite framework type of MFI.Type: GrantFiled: March 8, 2013Date of Patent: March 18, 2014Assignee: ExxonMobil Chemical Patents Inc.Inventors: Ivy D. Johnson, Wenyih F. Lai
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Publication number: 20130324760Abstract: A method of crystallizing a crystalline molecular sieve having a pore size in the range of from about 2 to about 19 ?, said method comprising the steps of (a) providing a mixture comprising at least one source of ions of tetravalent element (Y), at least one hydroxide source (OH?), and water, said mixture having a solid-content in the range of from about 15 wt. % to about 50 wt. %; and (b) treating said mixture to form the desired crystalline molecular sieve with stirring at crystallization conditions sufficient to obtain a weight hourly throughput from about 0.005 to about 1 hr?1, wherein said crystallization conditions comprise a temperature in the range of from about 200° C. to about 500° C. and a crystallization time less than 100 hr.Type: ApplicationFiled: August 7, 2013Publication date: December 5, 2013Inventors: Ivy D. Johnson, Wenyih Frank Lai
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Patent number: 8562941Abstract: The present invention is a method that perturbs the initial crystallization of a material from a less desired phase into a more desired phase. More specifically, the present invention is a method to form a different crystallization of a zeolite, mesoporous material, SAPO4, AlPO4 or porous inorganic oxide after the hydrothermal synthesis has started and a precursor crystalline phase has formed.Type: GrantFiled: December 12, 2006Date of Patent: October 22, 2013Assignee: Exxonmobil Research and Engineering CompanyInventors: Ivy D. Johnson, Hilda B. Vroman, Simon C. Weston, Larry M. Stevens
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Patent number: 8557219Abstract: A method of crystallizing a crystalline molecular sieve having a pore size in the range of from about 2 to about 19 ?, said method comprising the steps of (a) providing a mixture comprising at least one source of ions of tetravalent element (Y), at least one hydroxide source (OH?), and water, said mixture having a solid-content in the range of from about 15 wt. % to about 50 wt. %; and (b) treating said mixture to form the desired crystalline molecular sieve with stirring at crystallization conditions sufficient to obtain a weight hourly throughput from about 0.005 to about 1 hr?1, wherein said crystallization conditions comprise a temperature in the range of from about 200° C. to about 500° C. and a crystallization time less than 100 hr.Type: GrantFiled: January 29, 2007Date of Patent: October 15, 2013Assignee: ExxonMobil Chemical Patents Inc.Inventors: Ivy D. Johnson, Wenyih Frank Lai
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Publication number: 20130251627Abstract: A method of crystallizing a crystalline molecular sieve having a pore size in the range of from about 2 to about 19 ?, said method comprising the steps of (a) providing a mixture comprising at least one source of ions of tetravalent element (Y), at least one hydroxide source (OH?), and water, said mixture having a solid-content in the range of from about 15 wt. % to about 50 wt. %; and (b) treating said mixture to form the desired crystalline molecular sieve with stirring at crystallization conditions sufficient to obtain a weight hourly throughput from about 0.005 to about 1 hr?1, wherein said crystallization conditions comprise a temperature in the range of from about 200° C. to about 500° C. and a crystallization time less than 100 hr.Type: ApplicationFiled: March 8, 2013Publication date: September 26, 2013Inventors: Ivy D. Johnson, Wenyih F. Lai
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Publication number: 20130225890Abstract: The present invention provides a process for producing a monoalkylated aromatic compound comprising the step of contacting an alkylatable aromatic compound with an alkylating agent in the presence of a catalyst composition under effective alkylation conditions, said catalyst composition comprising MCM-56 and a binder, such that the crystal/binder weight ratio in the catalyst composition is from above 20/80 to about 80/20.Type: ApplicationFiled: August 24, 2012Publication date: August 29, 2013Inventors: Matthew J. Vincent, Terry E. Helton, Ivy D. Johnson
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Publication number: 20120264987Abstract: A crystalline molecular sieve of MFS framework type manufactured by the method disclosed herein. A hydrocarbon conversion process using the crystalline molecular sieve is disclosed.Type: ApplicationFiled: May 1, 2012Publication date: October 18, 2012Inventors: Machteld M. Mertens, An Verberckmoes, Ivy D. Johnson
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Patent number: 8187569Abstract: A method of making a crystalline molecular sieve of MFS framework type, said method comprising the steps of (a) adding at least one source of ions of tetravalent element (Y), at least one source of ions of trivalent element (X), at least one hydroxide source (OH?), at least one structure-directing-agent (R), at least one seed source (Seed), and water (H2O) to form a mixture having the following mole composition (expressed in term of oxide): YO2:(n)X2O3:(x)OH?:(y)R:(z)H2O+(m)Seed wherein the m is in the range of from about 10 wtppm to about 2 wt. % (based on total weight of the synthesis mixture), the n is in the range of from about 0.005 to 0.05, the x is in the range of from about 0.01 to about 0.3, the y is in the range of from about 0.Type: GrantFiled: January 29, 2007Date of Patent: May 29, 2012Assignee: ExxonMobil Chemical Patents Inc.Inventors: Machteld M. Mertens, An Verberckmoes, Ivy D. Johnson