Patents by Inventor Andrzej M. Malek
Andrzej M. Malek 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: 11951455Abstract: A process for dehydrogenating alkane or alkylaromatic compounds comprising contacting the given compound and a dehydrogenation catalyst in a fluidized bed. The dehydrogenation catalyst is prepared from an at least partially deactivated platinum/gallium catalyst on an alumina-based support that is reconstituted by impregnating it with a platinum salt solution, then calcining it at a temperature from 400° C. to 1000° C., under conditions such that it has a platinum content ranging from 1 to 500 ppm, based on weight of catalyst; a gallium content ranging from 0.2 to 2.0 wt %; and a platinum to gallium ratio ranging from 1:20,000 to 1:4. It also has a Pt retention that is equal to or greater than that of a fresh catalyst being used in a same or similar catalytic process.Type: GrantFiled: February 15, 2022Date of Patent: April 9, 2024Assignee: Dow Global Technologies LLCInventors: Lin Luo, Devon C. Rosenfeld, Andrzej M. Malek
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Patent number: 11559790Abstract: A process for dehydrogenating alkane or alkylaromatic compounds comprising contacting the given compound and a dehydrogenation catalyst in a fluidized bed. The dehydrogenation catalyst is prepared from an at least partially deactivated platinum/gallium catalyst on an alumina-based support that is reconstituted by impregnating it with a platinum salt solution, then calcining it at a temperature from 400° C. to 1000° C., under conditions such that it has a platinum content ranging from 1 to 500 ppm, based on weight of catalyst; a gallium content ranging from 0.2 to 2.0 wt %; and a platinum to gallium ratio ranging from 1:20,000 to 1:4. It also has a Pt retention that is equal to or greater than that of a fresh catalyst being used in a same or similar catalytic process.Type: GrantFiled: December 30, 2020Date of Patent: January 24, 2023Assignee: Dow Global Technologies LLCInventors: Lin Luo, Devon C. Rosenfeld, Andrzej M. Malek
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Publication number: 20220168709Abstract: A process for dehydrogenating alkane or alkylaromatic compounds comprising contacting the given compound and a dehydrogenation catalyst in a fluidized bed. The dehydrogenation catalyst is prepared from an at least partially deactivated platinum/gallium catalyst on an alumina-based support that is reconstituted by impregnating it with a platinum salt solution, then calcining it at a temperature from 400° C. to 1000° C., under conditions such that it has a platinum content ranging from 1 to 500 ppm, based on weight of catalyst; a gallium content ranging from 0.2 to 2.0 wt %; and a platinum to gallium ratio ranging from 1:20,000 to 1:4. It also has a Pt retention that is equal to or greater than that of a fresh catalyst being used in a same or similar catalytic process.Type: ApplicationFiled: February 15, 2022Publication date: June 2, 2022Applicant: Dow Global Technologies LLCInventors: Lin Luo, Devon C. Rosenfeld, Andrzej M. Malek
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Publication number: 20210129117Abstract: A process for dehydrogenating alkane or alkylaromatic compounds comprising contacting the given compound and a dehydrogenation catalyst in a fluidized bed. The dehydrogenation catalyst is prepared from an at least partially deactivated platinum/gallium catalyst on an alumina-based support that is reconstituted by impregnating it with a platinum salt solution, then calcining it at a temperature from 400° C. to 1000° C., under conditions such that it has a platinum content ranging from 1 to 500 ppm, based on weight of catalyst; a gallium content ranging from 0.2 to 2.0 wt %; and a platinum to gallium ratio ranging from 1:20,000 to 1:4. It also has a Pt retention that is equal to or greater than that of a fresh catalyst being used in a same or similar catalytic process.Type: ApplicationFiled: December 30, 2020Publication date: May 6, 2021Inventors: Lin Luo, Devon C. Rosenfeld, Andrzej M. Malek
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Patent number: 10513471Abstract: A process and system for preparing C2 to C5 hydrocarbons includes introducing a feed stream containing hydrogen gas and a carbon-containing gas selected from carbon monoxide, carbon dioxide, and mixtures thereof into a first reaction zone, contacting the feed stream and a hybrid catalyst in the first reaction zone, introducing a reaction zone product stream into a water removal zone that is downstream from the first reaction zone, and introducing a product stream from the water removal zone into a second reaction zone, resulting in a final stream comprising C2 to C5 hydrocarbons. The hybrid catalyst includes a methanol synthesis component and a microporous solid acid component; the microporous solid acid component is a molecular sieve having 8-MR access. The water removal zone removes at least a portion of water from the reaction zone product stream.Type: GrantFiled: November 15, 2017Date of Patent: December 24, 2019Assignee: Dow Global Technologies LLCInventors: Davy L. S. Nieskens, Aysegul Ciftci Sandikci, Peter E. Groenendijk, Barry B. Fish, Andrzej M. Malek
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Publication number: 20190352239Abstract: A process and system for preparing C2 to C5 hydrocarbons includes introducing a feed stream containing hydrogen gas and a carbon-containing gas selected from carbon monoxide, carbon dioxide, and mixtures thereof into a first reaction zone, contacting the feed stream and a hybrid catalyst in the first reaction zone, introducing a reaction zone product stream into a water removal zone that is downstream from the first reaction zone, and introducing a product stream from the water removal zone into a second reaction zone, resulting in a final stream comprising C2 to C5 hydrocarbons. The hybrid catalyst includes a methanol synthesis component and a microporous solid acid component; the microporous solid acid component is a molecular sieve having 8-MR access. The water removal zone removes at least a portion of water from the reaction zone product stream.Type: ApplicationFiled: November 15, 2017Publication date: November 21, 2019Applicant: DOW GLOBAL TECHNOLOGIES LLCInventors: Davy L.S. Nieskens, Aysegul Ciftci Sandikci, Peter E. Groenendijk, Barry B. Fish, Andrzej M. Malek
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Patent number: 10065905Abstract: Increase propane dehydrogenation activity of a partially deactivated dehydrogenation catalyst by heating the partially deactivated catalyst to a temperature of at least 660° C., conditioning the heated catalyst in an oxygen-containing atmosphere and, optionally, stripping molecular oxygen from the conditioned catalyst.Type: GrantFiled: October 31, 2017Date of Patent: September 4, 2018Assignee: Dow Global Technologies LLCInventors: Matthew Pretz, Lin Luo, Susan Domke, Howard W. Clark, Richard A. Pierce, Andrzej M. Malek, Mark W. Stewart, Brien A. Stears, Albert E. Schweizer, Jr., Guido Capone, Duncan P. Coffey, Isa K. Mbaraka
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Publication number: 20180057422Abstract: Increase propane dehydrogenation activity of a partially deactivated dehydrogenation catalyst by heating the partially deactivated catalyst to a temperature of at least 660° C., conditioning the heated catalyst in an oxygen-containing atmosphere and, optionally, stripping molecular oxygen from the conditioned catalyst.Type: ApplicationFiled: October 31, 2017Publication date: March 1, 2018Inventors: Matthew Pretz, Lin Luo, Susan Domke, Howard W. Clark, Richard A. Pierce, Andrzej M. Malek, Mark W. Stewart, Brien A. Stears, Albert E. Schweizer, JR., Guido Capone, Duncan P. Coffey, Isa K. Mbaraka
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Patent number: 9834496Abstract: Increase propane dehydrogenation activity of a partially deactivated dehydrogenation catalyst by heating the partially deactivated catalyst to a temperature of at least 660° C., conditioning the heated catalyst in an oxygen-containing atmosphere and, optionally, stripping molecular oxygen from the conditioned catalyst.Type: GrantFiled: July 11, 2012Date of Patent: December 5, 2017Assignee: Dow Global Technologies LLCInventors: Matthew Pretz, Lin Luo, Susan Domke, Howard W. Clark, Richard A. Pierce, Andrzej M. Malek, Mark W. Stewart, Brien A. Stears, Albert E. Schweizer, Jr., Guido Capone, Duncan P. Coffey, Isa K. Mbaraka
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Patent number: 9180430Abstract: Catalytic composition for production of olefins and methods of using same to decrease production of oxygenate byproducts. The catalytic composition includes an admixture of an alumina dehydration catalyst and at least one additional metal oxide.Type: GrantFiled: February 25, 2011Date of Patent: November 10, 2015Assignee: Dow Global Technologies LLCInventors: Yu Liu, Andrzej M. Malek, Duncan Coffey, Eric E. Stangland, Albert E. Schweizer
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Publication number: 20140371501Abstract: A process for dehydrogenating alkane or alkylaromatic compounds comprising contacting the given compound and a dehydrogenation catalyst in a fluidized bed. The dehydrogenation catalyst is prepared from an at least partially deactivated platinum/gallium catalyst on an alumina-based support that is reconstituted by impregnating it with a platinum salt solution, then calcining it at a temperature from 400° C. to 1000° C., under conditions such that it has a platinum content ranging from 1 to 500 ppm, based on weight of catalyst; a gallium content ranging from 0.2 to 2.0 wt %; and a platinum to gallium ratio ranging from 1:20,000 to 1:4. It also has a Pt retention that is equal to or greater than that of a fresh catalyst being used in a same or similar catalytic process.Type: ApplicationFiled: February 6, 2013Publication date: December 18, 2014Applicant: DOW GLOBAL TECHNOLOGIES LLCInventors: Lin Luo, Devon C. Rosenfeld, Andrzej M. Malek
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Publication number: 20140290738Abstract: The present invention is a method comprising depositing a metal oxide layer as part of the production of an optoelectrically active device and exposing the metal oxide layer to a reactive agent to form a relatively hydrophobic surface. The invention also includes device so made, preferably a photovoltaic device, which shows improved stability as compared to devices not subject to the treatment.Type: ApplicationFiled: December 7, 2012Publication date: October 2, 2014Applicant: Dow Global Technologies LLCInventors: Andrzej M. Malek, Todd R. Bryden, Peter C Lebaron
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Publication number: 20140200385Abstract: Increase propane dehydrogenation activity of a partially deactivated dehydrogenation catalyst by heating the partially deactivated catalyst to a temperature of at least 660° C, conditioning the heated catalyst in an oxygen-containing atmosphere and, optionally, stripping molecular oxygen from the conditioned catalyst.Type: ApplicationFiled: July 11, 2012Publication date: July 17, 2014Applicant: DOW GLOBAL TECHNOLOGIES LLCInventors: Matthew T. Pretz, LIn Luo, Susan Domke, Howard W. Clark, Richard A. Pierce, Andrzej M. Malek, Mark W. Stewart, Brien A. Stears, Albert E. Schweizer, JR., Guido Capore, Duncan P. Coffey, Isa K. Mbaraka
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Patent number: 8710288Abstract: A process for converting an oxygenate-containing feedstock to a product comprising olefins comprises including in the oxygenate-containing feedstock an amount of ammonia. The presence of the ammonia increases the product's ratio of ethylene to propylene.Type: GrantFiled: March 11, 2011Date of Patent: April 29, 2014Assignee: Dow Global Technologies LLCInventors: Yu Liu, Albert E. Schweizer, Jr., Andrzej M. Malek
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Patent number: 8598399Abstract: A process to prepare propylene showing desirably increased selectivity comprises contacting, at an elevated temperature, ethanol and a rhenium oxide-modified ZSM-5 zeolite catalyst, under conditions suitable to form propylene. The rhenium oxide-modified ZSM-5 zeolite catalyst may be prepared by impregnating, in an aqueous or organic medium, a ZSM-5 zeolite with a rhenium source, under conditions suitable to form a catalyst precursor, and calcining the catalyst precursor under conditions suitable to form a rhenium oxide-modified ZSM-5 zeolite catalyst.Type: GrantFiled: March 7, 2011Date of Patent: December 3, 2013Assignee: Dow Global Technologies LLCInventors: Yu Liu, Andrzej M. Malek, Albert E. Schweizer, Jr.
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Publication number: 20130012749Abstract: Catalytic composition for production of olefins and methods of using same to decrease production of oxygenate byproducts. The catalytic composition includes an admixture of an alumina dehydration catalyst and at least one additional metal oxide.Type: ApplicationFiled: February 25, 2011Publication date: January 10, 2013Inventors: Yu Liu, Andrzej M. Malek, Duncan Coffey, Eric E. Stangland, Albert E. Schweizer
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Publication number: 20130012748Abstract: A process for converting an oxygenate-containing feedstock to a product comprising olefins comprises including in the oxygenate-containing feedstock an amount of ammonia. The presence of the ammonia increases the product's ratio of ethylene to propylene.Type: ApplicationFiled: March 11, 2011Publication date: January 10, 2013Applicant: DOW GLOBAL TECHNOLOGIES LLCInventors: Yu Liu, Albert E. Schweizer, JR., Andrzej M. Malek
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Publication number: 20120330080Abstract: A process to prepare propylene showing desirably increased selectivity comprises contacting, at an elevated temperature, ethanol and a rhenium oxide-modified ZSM-5 zeolite catalyst, under conditions suitable to form propylene. The rhenium oxide-modified ZSM-5 zeolite catalyst may be prepared by impregnating, in an aqueous or organic medium, a ZSM-5 zeolite with a rhenium source, under conditions suitable to form a catalyst precursor, and calcining the catalyst precursor under conditions suitable to form a rhenium oxide-modified ZSM-5 zeolite catalyst.Type: ApplicationFiled: March 7, 2011Publication date: December 27, 2012Applicant: Dow Global Technologies LLCInventors: Yu Liu, Andrzej M. Malek, Albert E. Schweizer, JR.
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Patent number: 7419928Abstract: A process for enhancing the activity of a catalyst metal particulate for hydrogenation reactions comprising calcining the particulate in an oxidant-containing atmosphere to partially oxidize it thereby forming a porous layer of oxides thereon, treating with an solution capable of oxidizing the calcined metal particulate and comprising a compound of a hydrogenation catalyst metal to where said metal particulate has absorbed a volume of solution equal to at least about 10% of its calculated pore volume and activating it by treatment with a hydrogen-containing gas at elevated temperatures thereby forming a dispersed active metal catalyst. Preferably, the treated particulate is calcined a second time under the same conditions as the first before final activation with a hydrogen-containing gas. The metal particulate is preferably sized after each calcination and any agglomerates larger than 250 microns are comminuted to a desired size.Type: GrantFiled: April 6, 2004Date of Patent: September 2, 2008Assignee: ExxonMobil Research and Engineering CompanyInventors: Andrzej M. Malek, Stephen C. Leviness, Horacio M. Trevino, Weldon K. Bell, David O. Marler
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Patent number: 7361619Abstract: Dispersed Active Metal catalyst for hydrogenation reactions is produced by treating a substantially catalytically inactive metal particulate with a solution capable of oxidizing the metal particulate and comprising of at least one compound of a hydrogenation catalyst metal thereby forming a layer of at least one of hydroxides and oxides thereon. The metal particulate is activated by treatment with a hydrogen-containing gas at elevated temperatures to form a porous layer of Dispersed Active Metal catalyst. Preferably, the treated metal particulate is dried prior to activation, and also preferably calcined in an oxidant-containing atmosphere prior to activation. The treatment solution may advantageously contain a compound of at least one promoter metal for the added catalyst metal. The porosity of the layer provides enhanced catalyst activity as well as improved methane selectivity in the Fischer-Tropsch process.Type: GrantFiled: April 6, 2004Date of Patent: April 22, 2008Assignee: ExxonMobil Research and Engineering CompanyInventors: Andrzej M. Malek, Stephen C. Leviness, Horacio M. Trevino, Weldon K. Bell, David O. Marler