Patents by Inventor Madan M. Bhasin
Madan M. Bhasin 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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Publication number: 20190118167Abstract: A supported silver catalyst and use thereof in a process for producing an alkylene oxide, such as ethylene oxide, by the direct oxidation of an alkylene with oxygen or an oxygen-containing gas, wherein the catalyst provides improved stability and improved resilience to reactor upsets and timely recovery to substantially pre-upset levels of catalyst activity and/or efficiency. In some embodiments, the catalyst also exhibits improved activity. A catalyst capable of producing ethylene oxide at a selectivity of at least 87 percent while achieving a work rate of at least 184 kg/h/m3 at a temperature of no greater than 235° C. when operated in a process where the inlet feed to a reactor containing the catalyst comprises ethylene, oxygen, and carbon dioxide, wherein the concentration of carbon dioxide in the inlet feed is greater than or equal to 2 mole percent.Type: ApplicationFiled: October 31, 2018Publication date: April 25, 2019Inventors: Manuel A.W. Natal, Madan M. Bhasin, Hwaili Soo, Albert C. Liu
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Patent number: 10159961Abstract: A supported silver catalyst and use thereof in a process for producing an alkylene oxide, such as ethylene oxide, by the direct oxidation of an alkylene with oxygen or an oxygen-containing gas, wherein the catalyst provides improved stability and improved resilience to reactor upsets and timely recovery to substantially pre-upset levels of catalyst activity and/or efficiency. In some embodiments, the catalyst also exhibits improved activity. A catalyst capable of producing ethylene oxide at a selectivity of at least 87 percent while achieving a work rate of at least 184 kg/h/m3 at a temperature of no greater than 235° C. when operated in a process where the inlet feed to a reactor containing the catalyst comprises ethylene, oxygen, and carbon dioxide, wherein the concentration of carbon dioxide in the inlet feed is greater than or equal to 2 mole percent.Type: GrantFiled: September 21, 2012Date of Patent: December 25, 2018Assignee: Dow Global Technologies LLCInventors: Manuel A. W. Natal, Madan M. Bhasin, Hwaili Soo, Albert C. Liu
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Publication number: 20160082423Abstract: A supported silver catalyst and use thereof in a process for producing an alkylene oxide, such as ethylene oxide, by the direct oxidation of an alkylene with oxygen or an oxygen-containing gas, wherein the catalyst provides improved stability and improved resilience to reactor upsets and timely recovery to substantially pre-upset levels of catalyst activity and/or efficiency. In some embodiments, the catalyst also exhibits improved activity. A catalyst capable of producing ethylene oxide at a selectivity of at least 87 percent while achieving a work rate of at least 184 kg/h/m3 at a temperature of no greater than 235° C. when operated in a process where the inlet feed to a reactor containing the catalyst comprises ethylene, oxygen, and carbon dioxide, wherein the concentration of carbon dioxide in the inlet feed is greater than or equal to 2 mole percent.Type: ApplicationFiled: September 21, 2012Publication date: March 24, 2016Inventors: Manuel A. W. Natal, Madan M. Bhasin, Hwaili Soo, Albert C. Liu
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Publication number: 20140088316Abstract: A supported silver catalyst and use thereof in a process for producing an alkylene oxide, such as ethylene oxide, by the direct oxidation of an alkylene with oxygen or an oxygen-containing gas, wherein the catalyst provides improved stability and improved resilience to reactor upsets and timely recovery to substantially pre-upset levels of catalyst activity and/or efficiency. In some embodiments, the catalyst also exhibits improved activity. A catalyst capable of producing ethylene oxide at a selectivity of at least 87 percent while achieving a work rate of at least 184 kg/h/m3 at a temperature of no greater than 235° C. when operated in a process where the inlet feed to a reactor containing the catalyst comprises ethylene, oxygen, and carbon dioxide, wherein the concentration of carbon dioxide in the inlet feed is greater than or equal to 2 mole percent.Type: ApplicationFiled: September 21, 2012Publication date: March 27, 2014Inventors: Manuel A. W. Natal, Madan M. Bhasin, Hwaili Soo, Albert C. Liu
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Patent number: 8382881Abstract: The invention provides a method for removing mercury from a liquid or gas hydrocarbon stream, mixtures thereof, including mixtures of liquid streams with a solid carbonaceous substance, by contacting the hydrocarbon stream with a composition comprising silver and a support material, wherein the composition as measured by ammonia chemisorption has a surface acidity in the range of 0.1-10.0 ?mole of irreversible NH3/g of the composition.Type: GrantFiled: November 19, 2007Date of Patent: February 26, 2013Inventors: Madan M. Bhasin, Mark K. Brayden, Foppe Dupius, Peter E. Groenendijk, Seyed R. Seyedmonir, Michael C. Smith, Fredrick W. Vance
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Publication number: 20110082029Abstract: An improved carrier useful for preparing a catalyst having excellent catalytic performance when used in the production of alkylene oxide, such as ethylene oxide. The carrier is obtained by a) impregnating a preformed alpha-alumina carrier with at least one modifier selected from among alkali metal silicates and alkaline earth metal silicates, b) drying the impregnated carrier; and c) calcining dried carrier. The carrier may optionally be washed, prior to being impregnated by conventional catalytic material and/or promoter material.Type: ApplicationFiled: November 16, 2010Publication date: April 7, 2011Inventors: Erlind M. Thorsteinson, Madan M. Bhasin, Albert Cheng-Yu Liu, Juliana G. Serafin, Seyed R. Seyedmonir, Hwaili Soo
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Publication number: 20100126909Abstract: The invention provides a method for removing mercury from a liquid or gas hydrocarbon stream, mixtures thereof, including mixtures of liquid streams with a solid carbonaceous substance, by contacting the hydrocarbon stream with a composition comprising silver and a support material, wherein the composition as measured by ammonia chemisorption has a surface acidity in the range of 0.1-10.0 ?mole of irreversible NH3/g of the composition.Type: ApplicationFiled: November 19, 2007Publication date: May 27, 2010Inventors: Madan M. Bhasin, Mark K. Brayden, Foppe Dupius, Peter E. Groenendijk, Seyed R. Seyedmonir, Michael C. Smith, Fredrick W. Vance, Frederick R. Van Buren, Marc A. Mangnus
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Publication number: 20100056816Abstract: This invention relates to shaped porous bodies of alpha-alumina platelets which are useful as catalyst carriers, filters, membrane reactors, and preformed bodies for composites. This invention also relates to processes of making such shaped bodies and processes for modifying the surface composition of alpha-alumina.Type: ApplicationFiled: July 20, 2007Publication date: March 4, 2010Inventors: Sten A. Wallin, Juliana G. Serafin, Madan M. Bhasin, Steven R. Lakso
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Publication number: 20090177000Abstract: A supported silver catalyst and use thereof in a process for producing an alkylene oxide, such as ethylene oxide, by the direct oxidation of an alkylene with oxygen or an oxygen-containing gas, wherein the catalyst provides improved stability and improved resilience to reactor upsets and timely recovery to substantially pre-upset levels of catalyst activity and/or efficiency. In some embodiments, the catalyst also exhibits improved activity. A catalyst capable of producing ethylene oxide at a selectivity of at least 87 percent while achieving a work rate of at least 184 kg/h/m3 at a temperature of no greater than 235° C. when operated in a process where the inlet feed to a reactor containing the catalyst comprises ethylene, oxygen, and carbon dioxide, wherein the concentration of carbon dioxide in the inlet feed is greater than or equal to 2 mole percent.Type: ApplicationFiled: April 17, 2007Publication date: July 9, 2009Inventors: Manuel A. W. Natal, Madan M. Bhasin, Hwaili Soo, Albert C. Liu
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Patent number: 5504053Abstract: Catalysts for the production of alkylene oxide by the epoxidation of alkene with oxygen comprise a silver impregnated support containing a sufficient amount of manganese component to enhance at least one of activity and/or efficiency and/or stability as compared to a similar catalyst which does not contain manganese component.Type: GrantFiled: April 3, 1990Date of Patent: April 2, 1996Assignee: Union Carbide Chemicals & Plastics Technology CorporationInventors: Pen-Yuan Chou, Madan M. Bhasin, Hwaili Soo, Erlind M. Thorsteinson
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Patent number: 5187140Abstract: Catalysts for the epoxidation of alkene, especially ethylene, to the corresponding alkylene oxide, e.g., ethylene oxide, which catalysts contain a high silver content on carriers having a high surface area and a high pore volume are disclosed. Methods for making and using such catalysts are also disclosed.Type: GrantFiled: July 23, 1990Date of Patent: February 16, 1993Assignee: Union Carbide Chemicals & Plastics Technology CorporationInventors: Erlind M. Thorsteinson, Madan M. Bhasin, Seyed R. Seyedmonir
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Patent number: 5102848Abstract: Catalysts for the epoxidation of ethylene in the vapor phase comprise silver impregnated support having thereon at least one cation promoter and oxyanion promoter comprising (i) sulfate anion, (ii) fluoride anion and (iii) oxyanion of an element of Group 3b to 6b, inclusive, of the Periodic Table, wherein the amount of fluoride anion is sufficient to reduce ethylene oxide burning.Type: GrantFiled: September 28, 1990Date of Patent: April 7, 1992Assignee: Union Carbide Chemicals & Plastics Technology CorporationInventors: Hwaili Soo, Pen-Yuan Chou, Madan M. Bhasin
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Patent number: 5057481Abstract: This invention relates to the catalysts for the manufacture of ethylene oxide at commercial concentrations in the presence of carbon dioxide gas recycle which contains impregnated silver on a support and a mixture of cesium salts, at least one of which is a cesium salt in which the anions thereof are oxyanions of elements having an atomic number of 21 to 75 and being from groups 3b through 7b, inclusive, of the Periodic Table of the Elements.Type: GrantFiled: October 3, 1988Date of Patent: October 15, 1991Assignee: Union Carbide Chemicals and Plastics Technology CorporationInventor: Madan M. Bhasin
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Patent number: 5051395Abstract: Catalysts for the production of alkylene oxide by the epoxidation of alkene with oxygen comprise a silver impregnated support containing a sufficient amount of scandium component to enhance at least one of activity and/or efficiency as compared to a similar catalyst which does not contain scandium component.Type: GrantFiled: September 25, 1989Date of Patent: September 24, 1991Assignee: Union Carbide Chemicals and Plastics Technology CorporationInventors: Scott F. Mitchell, David M. A. Minahan, Madan M. Bhasin
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Patent number: 4916243Abstract: This invention relates to a supported silver catalyst for the manufacture of ethylene oxide which contains a combination of (a) cesium and (b) at least one other alkali metal selected from the group consisting of lithium, sodium, potassium and rubidium, which combination comprises (a) and (b) in amounts in relation to the amount of silver therein sufficient to increase the efficiency of ethylene oxide manufacture to a value greater than the efficiencies obtainable under common conditions from respective catalysts which are the same as said catalyst except that instead of containing both (a) and (b), one contains the respective amount of (a), and the other contains the respective amount of (b). There is also described herein a process of making such catalyst and a process for producing ethylene oxide with such catalyst.Type: GrantFiled: April 1, 1987Date of Patent: April 10, 1990Assignee: Union Carbide Chemicals and Plastics Company Inc.Inventors: Madan M. Bhasin, Paul C. Ellgen, Charles D. Hendrix
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Patent number: 4908343Abstract: This invention relates to catalysts for the manufacture of ethylene oxide, especially at commercial concentrations in the presence of carbon dioxide gas recycle, which contains impregnated silver on a support and a mixture of cesium salt and one or more alkali metal and alkaline earth metal salts in which the anions thereof are halide or oxyanions of elements other than the oxygen therein having an atomic number of 7 or 15 to 83 and being from groups 3b through 7b, inclusive, and 3a through 7a, inclusive, of the Periodic Table of the Elements, at least a portion of said oxyanions are oxyanions of group 3b to 7b elements.Type: GrantFiled: October 3, 1988Date of Patent: March 13, 1990Assignee: Union Carbide Chemicals and Plastics Company Inc.Inventor: Madan M. Bhasin
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Patent number: 4455392Abstract: This invention relates to a supported silver catalyst for the manufacture of ethylene oxide prepared by a process comprising impregnating a porous catalyst support with a solvent containing a silver salt and treating the impregnated support to effect deposition of silver on the support surface. Following silver deposition, the support is impregnated with a liquid containing more than 30%, by volume, of an organic solvent capable of forming a complex with silver ion, and a compound of at least one metal promoter in an amount sufficient to deposit the desired amount of metal cation on said support. The impregnated support is then treated to effect deposition of the promoter. There is also described herein a process of making such catalyst and a process for producing ethylene oxide.Type: GrantFiled: October 5, 1981Date of Patent: June 19, 1984Assignee: Union Carbide CorporationInventors: Glenn H. Warner, Madan M. Bhasin, Bernard Lieberman
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Patent number: 4419276Abstract: This invention relates to a supported silver catalyst for the manufacture of ethylene oxide prepared by a process comprising impregnating a porous catalyst support with a solvent containing a silver salt and treating the impregnated support to effect deposition of silver on the support surface. Following silver deposition, the support is impregnated with a liquid containing a compound of at least one metal promoter dissolved in an organic solvent in which water is soluble at ambient temperature in an amount no greater than about 50 wt. % based on the weight of the water-solvent solution. The impregnated support is then treated to effect deposition of the promoter. There is also described herein a process of making such catalyst and a process for producing ethylene oxide.Type: GrantFiled: September 30, 1981Date of Patent: December 6, 1983Assignee: Union Carbide CorporationInventors: Madan M. Bhasin, Glenn H. Warner
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Patent number: 4246186Abstract: A process for the selective preparation of two-carbon atom oxygenated hydrocarbons, namely acetic acid, ethanol, and acetaldehyde, by continuously contacting a reaction mixture containing hydrogen and carbon monoxide with a rhodium metal catalyst, at a combination of reaction conditions correlated so as to favor the formation of a substantial proportion of these products.Type: GrantFiled: January 20, 1976Date of Patent: January 20, 1981Assignee: Union Carbide CorporationInventors: Madan M. Bhasin, George L. O'Connor
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Patent number: 4235801Abstract: A process for the selective preparation of ethanol by continuously contacting a synthesis gas reaction mixture containing hydrogen and carbon monoxide with a rhodium-iron catalyst.Type: GrantFiled: April 12, 1976Date of Patent: November 25, 1980Assignee: Union Carbide CorporationInventor: Madan M. Bhasin