Patents by Inventor Leonid Modestovich Kustov
Leonid Modestovich Kustov 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: 20170050178Abstract: Oxidative dehydrogenation catalysts comprising MoVNbTeO having improved consistency of composition and a 25% conversion of ethylene at less than 420° C. and a selectivity to ethylene above 95% are prepared by treating the catalyst precursor with H2O2 in an amount equivalent to 0.30-2.8 mL H2O2 of a 30% solution per gram of catalyst precursor prior to calcining.Type: ApplicationFiled: July 26, 2016Publication date: February 23, 2017Applicant: NOVA Chemicals (International) S.A.Inventors: Vasily Simanzhenkov, Xiaoliang Gao, David Jeffrey Sullivan, Hanna Drag, Leonid Modestovich Kustov, Aleksey Victorovich Kucherov, Elena Dmitrievna Finashina
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Patent number: 9550709Abstract: In the operation of an oxidative dehydrogenation (ODH) process, it is desirable to remove oxygen in the product stream for a number of reasons, including to reduce oxidation of the product. This may be achieved by having several pre-reactors upstream of the main reactor having a catalyst system containing labile oxygen. The feed passes through one or more reactors saturated with labile oxygen. When the labile oxygen is consumed through a valve system, the pre-reactor accepts product from the main reactor and complexes reactive oxygen in the product stream until the catalyst system is saturated with labile oxygen. Then the reactor becomes a pre-reactor and another pre-reactor becomes a scavenger.Type: GrantFiled: October 27, 2014Date of Patent: January 24, 2017Assignee: NOVA Chemicals (International) S.A.Inventors: Vasily Simanzhenkov, Xiaoliang Gao, Edward Christopher Foy, Leonid Modestovich Kustov, Aleksey Victorovich Kucherov, Elena Dmitrievna Finashina
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Patent number: 9545610Abstract: Oxidative dehydrogenation of paraffins to olefins provides a lower energy route to produce olefins. Oxidative dehydrogenation processes may be integrated with a number of processes in a chemical plant such as polymerization processes, manufacture of glycols, and carboxylic acids and esters. Additionally, oxidative dehydrogenation processes can be integrated with the back end separation process of a conventional steam cracker to increase capacity at reduced cost.Type: GrantFiled: March 4, 2013Date of Patent: January 17, 2017Assignee: NOVA Chemicals (International) S.A.Inventors: Vasily Simanzhenkov, Leonid Modestovich Kustov, Aleksey Victorovich Kucherov, Elena Dmitrievna Finashina, Xiaoliang Gao, Edward Christopher Foy, Claire Jeannine Ennis
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Publication number: 20150141727Abstract: In the operation of an oxidative dehydrogenation (ODH) process, it is desirable to remove oxygen in the product stream for a number of reasons, including to reduce oxidation of the product. This may be achieved by having several pre-reactors upstream of the main reactor having a catalyst system containing labile oxygen. The feed passes through one or more reactors saturated with labile oxygen. When the labile oxygen is consumed through a valve system, the pre-reactor accepts product from the main reactor and complexes reactive oxygen in the product stream until the catalyst system is saturated with labile oxygen. Then the reactor becomes a pre-reactor and another pre-reactor becomes a scavenger.Type: ApplicationFiled: October 27, 2014Publication date: May 21, 2015Applicant: NOVA CHEMICALS (INTERNATIONAL) S.A.Inventors: Vasily Simanzhenkov, Xiaoliang Gao, Edward Christopher Foy, Leonid Modestovich Kustov, Aleksey Victorovich Kucherov, Elena Dmitrievna Finashina
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Patent number: 8846996Abstract: The present invention provides a process for the manufacture of an efficient and robust catalyst for the oxidative dehydrogenation of paraffins to olefins, preferably lower C2-4 paraffins. The present invention provides a process for the preparation of an oxidative dehydrogenation catalyst of C2-4 paraffins to olefins comprising comminuting: from 10 to 99 weight % of a mixed oxide catalyst of the formula VxMoyNbzTemMenOp, wherein Me is a metal selected from the group consisting of Ta, Ti, W, Hf, Zr, Sb and mixtures thereof; with from 90 to 1 weight % of an inert matrix selected from oxides of titanium, zirconia, aluminum, magnesium, yttria, lantana, silica and their mixed compositions or a carbon matrix to produce particles having a size from 1 to 100 microns and forming the resulting particles into pellets having a size from 0.1 to 2 mm.Type: GrantFiled: February 22, 2010Date of Patent: September 30, 2014Assignee: Nova Chemicals (International) S.A.Inventors: Leonid Modestovich Kustov, Aleksey Victorovich Kucherov, Elena Dmitrievna Finashina, Tatyana Nikolaevna Kucherova, Vera Ilynichna Isaeva, Andrzej Krzywicki, Haiyong Cai
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Publication number: 20140249339Abstract: Oxidative dehydrogenation of paraffins to olefins provides a lower energy route to produce olefins. Oxidative dehydrogenation processes may be integrated with a number of processes in a chemical plant such as polymerization processes, manufacture of glycols, and carboxylic acids and esters. Additionally, oxidative dehydrogenation processes can be integrated with the back end separation process of a conventional steam cracker to increase capacity at reduced cost.Type: ApplicationFiled: March 4, 2013Publication date: September 4, 2014Applicant: NOVA Chemicals (International) S.A.Inventors: Vasily Simanzhenkov, Leonid Modestovich Kustov, Aleksey Victorovich Kucherov, Elena Dmitrievna Finashina, Xiaoliang Gao, Edward Christopher Foy, Claire Jeannine Ennis
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Patent number: 8642825Abstract: The present invention provides a continuous process for the oxidative dehydrogenation of ethane to ethylene using a mixed oxide catalyst supported onto a ceramic membrane by supplying an oxygen containing gas (air or pure oxygen) and pure ethane to the opposite sides of the membrane, so that the paraffin and the oxygen do not directly mix in the reactor.Type: GrantFiled: September 13, 2012Date of Patent: February 4, 2014Assignee: Nova Chemicals (International) S.A.Inventors: Leonid Modestovich Kustov, Aleksey Victorovich Kucherov, Elena Dmitrievna Finashina, Vasily Simanzhenkov, Andrzej Krzywicki
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Publication number: 20130072737Abstract: The present invention provides a continuous process for the oxidative dehydrogenation of ethane to ethylene using a mixed oxide catalyst supported onto a ceramic membrane by supplying an oxygen containing gas (air or pure oxygen) and pure ethane to the opposite sides of the membrane, so that the paraffin and the oxygen do not directly mix in the reactor.Type: ApplicationFiled: September 13, 2012Publication date: March 21, 2013Applicant: NOVA CHEMICALS (INTERNATIONAL) S.A.Inventors: Leonid Modestovich Kustov, Aleksey Victorovich Kucherov, Elena Dmitrievna Finashina, Vasily Simanzhenkov, Andrzej Krzywicki
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Publication number: 20120016171Abstract: The present invention provides a process for the manufacture of an efficient and robust catalyst for the oxidative dehydrogenation of paraffins to olefins, preferably lower C2-4 paraffins. The present invention provides a process for the preparation of an oxidative dehydrogenation catalyst of C2-4 paraffins to olefins comprising comminuting: from 10 to 99 weight % of a mixed oxide catalyst of the formula VxMoyNbzTemMenOp, wherein Me is a metal selected from the group consisting of Ta, Ti, W, Hf, Zr, Sb and mixtures thereof; with from 90 to 1 weight % of an inert matrix selected from oxides of titanium, zirconia, aluminum, magnesium, yttria, lantana, silica and their mixed compositions or a carbon matrix to produce particles having a size from 1 to 100 microns and forming the resulting particles into pellets having a size from 0.1 to 2 mm.Type: ApplicationFiled: February 22, 2010Publication date: January 19, 2012Applicant: Nova Chemicals (International) S.A.Inventors: Leonid Modestovich Kustov, Aleksey Victorovich Kucherov, Elena Dmitrievna Finashina, Tatyana Nikolaevna Kucherova, Vera Ilynichna Isaeva, Andrzej Krzywicki, Haiyong Cai
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Publication number: 20110245562Abstract: The present invention provides a continuous process for the oxidative dehydrogenation of a lower paraffin to a lower olefin, preferably alpha olefin by sequentially providing pulses of an oxygen containing gas, an inert gas, the paraffin, and inert gas in the presence of a catalyst that preferably has the ability to hold and release oxygen, so that the paraffin and the oxygen do not directly mix in the reactor.Type: ApplicationFiled: March 17, 2011Publication date: October 6, 2011Inventors: Leonid Modestovich Kustov, Aleksey Victorovich Kucherov, Elena Dmitrievna Finashina, Alexander Yurievich Stakheev, Ilya Mikhailovich Sinev, Andrzej Krzywicki
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Publication number: 20110245571Abstract: The present invention provides a process for the oxidative dehydrogenation of a paraffin such as ethane to the corresponding alkene such as ethylene in which the alkane is contacted with a bed of oxidative dehydrogenation catalyst having an enhanced labile oxygen content in the crystal structure on an inert support optionally with a regenerable metallic oxidant composition in the absence of a gaseous feed containing oxygen.Type: ApplicationFiled: March 17, 2011Publication date: October 6, 2011Inventors: Leonid Modestovich Kustov, Aleksey Victorovich Kucherov, Elena Dmitrievna Finashina, Alexander Yurievich Stakheev, Ilya Mikhailovich Sinev, Andrzej Krzywicki
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Publication number: 20030109767Abstract: A process for the conversion of paraffin hydrocarbon feed stock via skeletal isomerisation by contacting this feed with a catalyst comprised of an ionic liquid formed from an N-containing heterocyclic and/or N-containing aliphatic organic cation and an inorganic anion derived from metal halides.Type: ApplicationFiled: November 8, 2002Publication date: June 12, 2003Inventors: Tamara Vladimirovna Vasina, Leonid Modestovich Kustov, Vladislav Anatol?apos;evich Ksenofontov, Yurii Egorovich Zubarev, Jindrich Houzvicka, John Zavilla
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Patent number: 6414197Abstract: A method and a catalyst are described for selective oxidation of aromatic compounds (e.g., benzene and its derivatives) into hydroxylated aromatic compounds (e.g., corresponding phenols). For example, benzene can be converted into phenol with a yield of at least 30-40%, and a selectivity on the basis of benzene of at least 95-97%. The selectivity for this reaction based on N2O is at least 90-95%. Therefore, no substantial N2O decomposition or consumption for complete benzene oxidation to CO+CO2 or other side products occurs. Similar results are obtained with benzene derivatives (e.g., fluorobenzene, difluorobenzene, phenol), although the selectivity is somewhat lower in the case of derivatives (e.g., about 80-85% in the case of fluorosubstituted benzenes). A preferred catalyst for this process is a composition containing a high-silica pentasil-type zeolite (e.g, an HZSM-5 type zeolite) which contains no purposefully introduced additives such as transition or noble metals.Type: GrantFiled: May 13, 1998Date of Patent: July 2, 2002Assignee: General Electric CompanyInventors: Leonid Modestovich Kustov, Viktor Ignatyevich Bogdan, Vladimir Borisovich Kazansky
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Patent number: 6388145Abstract: The invention relates to the field of organic synthesis, more specifically to a method for the production of phenol and cresol by the direct selective oxidation of benzene and toluene with nitrous oxide in the presence of a heterogeneous catalyst. Commercial high-silica zeolites are first calcined at a temperature of 500-950° C. sufficient to dehydroxylate it. It is then modified by the addition of modifying agents—zinc ions or zinc oxide—by applying a zinc compound to it. The catalyst is then activated in air or an inert gas at 300-850° C. The mixture of benzene or toluene with the nitrous oxide is brought into contact with the modified catalyst at 225 to 500° C.Type: GrantFiled: March 23, 2000Date of Patent: May 14, 2002Assignee: General Electric CompanyInventors: Leonid Modestovich Kustov, Andrei Leonidovich Tarasov, Aleksandr Arunovich Tyrlov, Viktor Ignatyevich Bogdan
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Publication number: 20020042544Abstract: The invention relates to the field of organic synthesis, more specifically to a method for the production of phenol and cresol by the direct selective oxidation of benzene and toluene with nitrous oxide in the presence of a heterogeneous catalyst. Commercial high-silica zeolites are first calcined at a temperature of 500-950° C. sufficient to dehydroxylate it. It is then modified by the addition of modifying agents—zinc ions or zinc oxide—by applying a zinc compound to it. The catalyst is then activated in air or an inert gas at 300-850° C. The mixture of benzene or toluene with the nitrous oxide is brought into contact with the modified catalyst at 225 to 500° C.Type: ApplicationFiled: March 23, 2000Publication date: April 11, 2002Inventors: Leonid Modestovich Kustov, Andrei Leonidovich Tarasov, Aleksandr Arunovich Tyrlov, Viktor Ignatyevich Bogdan
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Publication number: 20020040168Abstract: A method and a catalyst are described for selective oxidation of aromatic compounds (e.g., benzene and its derivatives) into hydroxylated aromatic compounds (e.g., corresponding phenols). For example, benzene can be converted into phenol with a yield of at least 30-40%, and a selectivity on the basis of benzene of at least 95-97%. The selectivity for this reaction based on N2O is at least 90-95%. Therefore, no substantial N2O decomposition or consumption for complete benzene oxidation to CO+CO2 or other side products occurs. Similar results are obtained with benzene derivatives (e.g., fluorobenzene, difluorobenzene, phenol), although the selectivity is somewhat lower in the case of derivatives (e.g., about 80-85% in the case of fluorosubstituted benzenes). A preferred catalyst for this process is a composition containing a high-silica pentasil-type zeolite (e.g, an HZSM-5 type zeolite) which contains no purposefully introduced additives such as transition or noble metals.Type: ApplicationFiled: May 13, 1998Publication date: April 4, 2002Inventors: LEONID MODESTOVICH KUSTOV, VIKTOR IGNATYEVICH BOGDAN, VLADIMIR BORISOVICH KAZANSKY
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Publication number: 20010049330Abstract: A method and a catalyst are described for selective oxidation of aromatic compounds (e.g., benzene and its derivatives) into hydroxylated aromatic compounds (e.g., corresponding phenols). For example, benzene can be converted into phenol with a yield of at least 30-40%, and a selectivity on the basis of benzene of at least 95-97%. The selectivity for this reaction based on N2O is at least 90-95%. Therefore, no substantial N2O decomposition or consumption for complete benzene oxidation to CO+CO2 or other side products occurs. Similar results are obtained with benzene derivatives (e.g., fluorobenzene, difluorobenzene, phenol), although the selectivity is somewhat lower in the case of derivatives (e.g., about 80-85% in the case of fluorosubstituted benzenes). A preferred catalyst for this process is a composition containing a high-silica pentasil-type zeolite (e.g., an HZSM-5 type zeolite) which contains no purposefully introduced additives such as transition or noble metals.Type: ApplicationFiled: July 9, 2001Publication date: December 6, 2001Inventors: Leonid Modestovich Kustov, Viktor Ignatyevich Bogdan, Vladimir Borisovich Kazansky