EA201270080A1 - Способ окислительного сочетания углеводородов - Google Patents

Способ окислительного сочетания углеводородов

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Publication number
EA201270080A1
EA201270080A1 EA201270080A EA201270080A EA201270080A1 EA 201270080 A1 EA201270080 A1 EA 201270080A1 EA 201270080 A EA201270080 A EA 201270080A EA 201270080 A EA201270080 A EA 201270080A EA 201270080 A1 EA201270080 A1 EA 201270080A1
Authority
EA
Eurasian Patent Office
Prior art keywords
group
elements
hydrocarbons
element selected
oxidative coupling
Prior art date
Application number
EA201270080A
Other languages
English (en)
Inventor
Сивадинараяна Чхинта
Джозеф Торман
Джеймс Р. Батлер
Джоу Хантер
Тейлор Ривес
Original Assignee
Файна Текнолоджи, Инк.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Файна Текнолоджи, Инк. filed Critical Файна Текнолоджи, Инк.
Publication of EA201270080A1 publication Critical patent/EA201270080A1/ru

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    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C2/00—Preparation of hydrocarbons from hydrocarbons containing a smaller number of carbon atoms
    • C07C2/76—Preparation of hydrocarbons from hydrocarbons containing a smaller number of carbon atoms by condensation of hydrocarbons with partial elimination of hydrogen
    • C07C2/82—Preparation of hydrocarbons from hydrocarbons containing a smaller number of carbon atoms by condensation of hydrocarbons with partial elimination of hydrogen oxidative coupling
    • C07C2/84—Preparation of hydrocarbons from hydrocarbons containing a smaller number of carbon atoms by condensation of hydrocarbons with partial elimination of hydrogen oxidative coupling catalytic
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C2/00—Preparation of hydrocarbons from hydrocarbons containing a smaller number of carbon atoms
    • C07C2/54—Preparation of hydrocarbons from hydrocarbons containing a smaller number of carbon atoms by addition of unsaturated hydrocarbons to saturated hydrocarbons or to hydrocarbons containing a six-membered aromatic ring with no unsaturation outside the aromatic ring
    • C07C2/64—Addition to a carbon atom of a six-membered aromatic ring
    • C07C2/66—Catalytic processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
    • B01J23/54—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
    • B01J23/56—Platinum group metals
    • B01J23/63—Platinum group metals with rare earths or actinides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J6/00—Heat treatments such as Calcining; Fusing ; Pyrolysis
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C15/00—Cyclic hydrocarbons containing only six-membered aromatic rings as cyclic parts
    • C07C15/02—Monocyclic hydrocarbons
    • C07C15/067—C8H10 hydrocarbons
    • C07C15/073—Ethylbenzene
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C2521/00—Catalysts comprising the elements, oxides or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium or hafnium
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C2521/00—Catalysts comprising the elements, oxides or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium or hafnium
    • C07C2521/10—Magnesium; Oxides or hydroxides thereof
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C2523/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group C07C2521/00
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C2523/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group C07C2521/00
    • C07C2523/02—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group C07C2521/00 of the alkali- or alkaline earth metals or beryllium
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C2523/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group C07C2521/00
    • C07C2523/10—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group C07C2521/00 of rare earths
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C2523/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group C07C2521/00
    • C07C2523/16—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group C07C2521/00 of arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
    • C07C2523/32—Manganese, technetium or rhenium
    • C07C2523/36—Rhenium

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Catalysts (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)

Abstract

Способ окислительного сочетания углеводородов, такого как окислительное сочетание метана с толуолом, включает обеспечение окислительного катализатора внутри реактора и осуществление реакции окислительного сочетания при ряде условий реакции. Окислительный катализатор включает (А) по меньшей мере один элемент, выбранный из группы, включающей лантаноидную группу, Mg, Ca и элементы группы 4 Периодической таблицы (Ti, Zr и Hf); (В) по меньшей мере один элемент, выбранный из группы, включающей элементы группы 1 Li, Na, K, Rb, Cs и элементы группы 3 (включая La и Ас) и групп 5-15 Периодической таблицы; (С) по меньшей мере один элемент, выбранный из группы, включающей элементы группы 1 Li, Na, K, Rb, Cs и элементы Ca, Sr и Ва; и (D) кислород.
EA201270080A 2009-06-29 2010-06-25 Способ окислительного сочетания углеводородов EA201270080A1 (ru)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US12/494,138 US8450546B2 (en) 2009-06-29 2009-06-29 Process for the oxidative coupling of hydrocarbons
PCT/US2010/039888 WO2011002665A1 (en) 2009-06-29 2010-06-25 Process for the oxidative coupling of hydrocarbons

Publications (1)

Publication Number Publication Date
EA201270080A1 true EA201270080A1 (ru) 2012-08-30

Family

ID=43381464

Family Applications (1)

Application Number Title Priority Date Filing Date
EA201270080A EA201270080A1 (ru) 2009-06-29 2010-06-25 Способ окислительного сочетания углеводородов

Country Status (9)

Country Link
US (4) US8450546B2 (ru)
EP (1) EP2448887A4 (ru)
JP (1) JP2012532105A (ru)
KR (1) KR20120115081A (ru)
CN (1) CN102471183A (ru)
AU (1) AU2010266506A1 (ru)
EA (1) EA201270080A1 (ru)
TW (1) TW201127785A (ru)
WO (1) WO2011002665A1 (ru)

Families Citing this family (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8912381B2 (en) * 2009-06-29 2014-12-16 Fina Technology, Inc. Process for the oxidative coupling of methane
US8399726B2 (en) 2010-04-20 2013-03-19 Fina Technology Inc Reactors and processes for the oxidative coupling of hydrocarbons
BR112012030016B8 (pt) 2010-05-24 2021-05-18 Siluria Technologies Inc processo para preparar etileno a partir de metano e método para preparar um produto a jusante de etileno
EA029867B1 (ru) 2011-05-24 2018-05-31 Силурия Текнолоджиз, Инк. Катализаторы для нефтехимического катализа
US20130158322A1 (en) 2011-11-29 2013-06-20 Siluria Technologies, Inc. Polymer templated nanowire catalysts
US9133079B2 (en) 2012-01-13 2015-09-15 Siluria Technologies, Inc. Process for separating hydrocarbon compounds
US9446397B2 (en) 2012-02-03 2016-09-20 Siluria Technologies, Inc. Method for isolation of nanomaterials
CA2874526C (en) 2012-05-24 2022-01-18 Siluria Technologies, Inc. Oxidative coupling of methane systems and methods
CA3125016C (en) 2012-05-24 2024-04-30 Lummus Technology Llc Catalytic forms and formulations
US9969660B2 (en) 2012-07-09 2018-05-15 Siluria Technologies, Inc. Natural gas processing and systems
WO2014089479A1 (en) 2012-12-07 2014-06-12 Siluria Technologies, Inc. Integrated processes and systems for conversion of methane to multiple higher hydrocarbon products
EP2969184A4 (en) 2013-03-15 2016-12-21 Siluria Technologies Inc CATALYSTS FOR PETROCHEMICAL CATALYSIS
WO2015081122A2 (en) 2013-11-27 2015-06-04 Siluria Technologies, Inc. Reactors and systems for oxidative coupling of methane
CN106068323B (zh) 2014-01-08 2019-09-06 希路瑞亚技术公司 乙烯成液体的系统和方法
US10377682B2 (en) 2014-01-09 2019-08-13 Siluria Technologies, Inc. Reactors and systems for oxidative coupling of methane
WO2015106023A1 (en) 2014-01-09 2015-07-16 Siluria Technologies, Inc. Oxidative coupling of methane implementations for olefin production
WO2015168601A2 (en) 2014-05-02 2015-11-05 Siluria Technologies, Inc. Heterogeneous catalysts
HUE054014T2 (hu) 2014-09-17 2021-08-30 Lummus Technology Inc Katalizátorok metán oxidatív csatolására és etán oxidatív dehidrogenálására
US10793490B2 (en) 2015-03-17 2020-10-06 Lummus Technology Llc Oxidative coupling of methane methods and systems
US9334204B1 (en) 2015-03-17 2016-05-10 Siluria Technologies, Inc. Efficient oxidative coupling of methane processes and systems
US20160289143A1 (en) 2015-04-01 2016-10-06 Siluria Technologies, Inc. Advanced oxidative coupling of methane
US10717068B2 (en) 2015-06-08 2020-07-21 Sabic Global Technologies Methane oxidative coupling with La—Ce catalysts
US9328297B1 (en) 2015-06-16 2016-05-03 Siluria Technologies, Inc. Ethylene-to-liquids systems and methods
EP3362425B1 (en) 2015-10-16 2020-10-28 Lummus Technology LLC Separation methods and systems for oxidative coupling of methane
CA3019396A1 (en) 2016-04-13 2017-10-19 Siluria Technologies, Inc. Oxidative coupling of methane for olefin production
US20180169561A1 (en) 2016-12-19 2018-06-21 Siluria Technologies, Inc. Methods and systems for performing chemical separations
US11001542B2 (en) 2017-05-23 2021-05-11 Lummus Technology Llc Integration of oxidative coupling of methane processes
WO2019010498A1 (en) 2017-07-07 2019-01-10 Siluria Technologies, Inc. SYSTEMS AND METHODS FOR OXIDIZING METHANE COUPLING

Family Cites Families (56)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4239658A (en) 1979-04-05 1980-12-16 Exxon Research & Engineering Co. Catalysts for the conversion of relatively low molecular weight hydrocarbons to higher molecular weight hydrocarbons and the regeneration of the catalysts
DE3171273D1 (en) 1980-12-09 1985-08-08 Toray Industries Immunoparticles and process for preparing the same
US4523049A (en) 1984-04-16 1985-06-11 Atlantic Richfield Company Methane conversion process
US4704487A (en) 1983-10-31 1987-11-03 Chevron Research Company Conversions of low molecular weight hydrocarbons to higher molecular weight hydrocarbons using a metal compound-containing catalyst (IV-B)
US4704493A (en) 1983-10-31 1987-11-03 Chevron Corporation Conversions of low molecular weight hydrocarbons to higher molecular weight hydrocarbons using a metal compound-containing catalyst (II-A)
US4547610A (en) * 1984-04-16 1985-10-15 Atlantic Richfield Company Methane conversion
CA1236078A (en) * 1984-04-16 1988-05-03 John A. Jaecker Hydrocarbon conversion process
US4968655A (en) * 1985-02-28 1990-11-06 Amoco Corporation Catalysts for conversion of a lower alkane
US5157188A (en) 1985-03-19 1992-10-20 Phillips Petroleum Company Methane conversion
US4658076A (en) 1985-03-19 1987-04-14 Phillips Petroleum Company Composition of matter and method of oxidative conversion of organic compounds therewith
US5210357A (en) 1985-06-07 1993-05-11 Phillips Petroleum Company Composition of matter and method of oxidative conversion of organic compounds therewith
US4895823A (en) 1985-03-19 1990-01-23 Phillips Petroleum Company Composition of matter for oxidative conversion of organic compounds
US4775654A (en) 1985-03-19 1988-10-04 Phillips Petroleum Company Composition of matter
US4658077A (en) * 1985-06-07 1987-04-14 Phillips Petroleum Company Composition of matter and method of oxidative conversion of organic compounds therewith
US4950836A (en) 1985-06-07 1990-08-21 Phillips Petroleum Company Oxidative methylation of organic compounds
US4982038A (en) 1985-03-19 1991-01-01 Phillips Petroleum Company Oxidative methylation of organic compounds
US4672145A (en) 1985-03-19 1987-06-09 Phillips Petroleum Company Composition of matter and method of oxidative conversion of organic compounds therewith
US5959170A (en) 1985-05-24 1999-09-28 Atlantic Richfield Company Methane conversion process
US5146027A (en) 1985-05-24 1992-09-08 Atlantic Richfield Co. Methane conversion process
US4774216A (en) 1985-06-07 1988-09-27 Phillips Petroleum Company Composition of matter for oxidative conversion of organic compounds
US4620057A (en) * 1985-06-07 1986-10-28 Phillips Petroleum Company Methane conversion
US5105045A (en) 1985-06-07 1992-04-14 Phillips Petroleum Company Method of oxidative conversion
US5160502A (en) 1986-12-22 1992-11-03 Phillips Petroleum Company Composition of matter and method of oxidative conversion of organic compounds therewith
US5118899A (en) 1986-12-22 1992-06-02 Phillips Petroleum Company Composition of matter and method of oxidative conversion of organic compounds therewith
US5087787A (en) 1986-12-29 1992-02-11 Phillips Petroleum Company Method of oxidative conversion
US4886931A (en) * 1987-06-04 1989-12-12 The Standard Oil Company Upgrading low molecular weight hydrocarbons
JPH0674215B2 (ja) * 1987-12-11 1994-09-21 宇部興産株式会社 炭化水素の製造方法
GB8802731D0 (en) 1988-02-06 1988-03-09 British Petroleum Co Plc Chemical process
US4826796A (en) 1988-03-28 1989-05-02 Institute Of Gas Technology Mixed basic metal oxide catalyst for oxidative coupling of methane
EP0335130A1 (en) * 1988-03-28 1989-10-04 Institute of Gas Technology Mixed basic metal oxide catalyst
US4950827A (en) 1988-03-28 1990-08-21 Institute Of Gas Technology Oxidative coupling of aliphatic and alicyclic hydrocarbons with aliphatic and alicyclic substituted aromatic hydrocarbons
US4956327A (en) 1989-05-31 1990-09-11 Institute Of Gas Technology Mixed basic metal oxide/sulfide catalyst
US4950830A (en) 1988-03-28 1990-08-21 Institute Of Gas Technology Dehydration of aliphatic and alicyclic hydrocarbons and aliphatic and alicyclic substituted aromatic hydrocarbons
FR2629451B1 (fr) * 1988-04-05 1991-07-12 Inst Francais Du Petrole Procede de production d'olefines a partir du gaz naturel
US5028577A (en) * 1989-01-11 1991-07-02 Amoco Corporation Lower alkane conversion catalysts
JPH0822825B2 (ja) * 1989-01-26 1996-03-06 日本鋼管株式会社 エチルベンゼンとスチレンの製造方法
JPH02225425A (ja) * 1989-02-28 1990-09-07 Ube Ind Ltd マグネシアを触媒の一成分とする炭化水素の製造方法
US5026945A (en) * 1989-09-19 1991-06-25 Union Carbide Chemicals And Plastics Technology Corporation Perovskite catalysts for oxidative coupling
CA2016675A1 (en) * 1990-05-14 1991-11-14 Kevin James Smith Process for the oxidative coupling of methane to higher hydrocarbons
US5132482A (en) 1990-06-14 1992-07-21 Alberta Research Council Process for the oxidative coupling of methane to higher hydrocarbons
IT1244484B (it) * 1990-12-21 1994-07-15 Eniricerche Spa Procedimento e catalizzatore per la trasformazione del metano in prodotti idrocarburici superiori
US5097086A (en) 1991-05-31 1992-03-17 Institute Of Gas Technology Liquid catalyst for oxidative coupling reactions
JPH04368342A (ja) * 1991-06-17 1992-12-21 Sekiyu Shigen Kaihatsu Kk メタンを原料とするエタン、エチレンの製造方法
JPH059133A (ja) * 1991-06-28 1993-01-19 Sekiyu Shigen Kaihatsu Kk メタンからエタン、エチレンの製造方法
US5763722A (en) * 1992-12-11 1998-06-09 Repsol Petroleo S.A. Method for the methane chemical conversion into C2 hydrocarbons
JPH1025257A (ja) * 1996-07-12 1998-01-27 Toyota Motor Corp メチル基をビニル基に転化する方法
US5780003A (en) 1996-08-23 1998-07-14 Uop Llc Crystalline manganese phosphate compositions
DE19634192A1 (de) * 1996-08-23 1998-02-26 Basf Ag Bismut-haltige Katalysatoren
US6096934A (en) 1998-12-09 2000-08-01 Uop Llc Oxidative coupling of methane with carbon conservation
CA2427722C (en) 2003-04-29 2007-11-13 Ebrahim Bagherzadeh Preparation of catalyst and use for high yield conversion of methane to ethylene
US20060135838A1 (en) * 2004-12-09 2006-06-22 Ebrahim Bagherzadeh Catalyst and method for converting low molecular weight paraffinic hydrocarbons into alkenes
CN101316807B (zh) * 2005-10-28 2012-11-28 巴斯夫欧洲公司 从c1-c4链烷烃合成芳族烃并利用包含c1-c4链烷烃的产物料流的方法
WO2008134484A2 (en) 2007-04-25 2008-11-06 Hrd Corp. Catalyst and method for converting natural gas to higher carbon compounds
US8912381B2 (en) * 2009-06-29 2014-12-16 Fina Technology, Inc. Process for the oxidative coupling of methane
US9089832B2 (en) * 2009-06-29 2015-07-28 Fina Technology, Inc. Catalysts for oxidative coupling of hydrocarbons
US8399726B2 (en) * 2010-04-20 2013-03-19 Fina Technology Inc Reactors and processes for the oxidative coupling of hydrocarbons

Also Published As

Publication number Publication date
US8729328B2 (en) 2014-05-20
US20130231513A1 (en) 2013-09-05
EP2448887A1 (en) 2012-05-09
WO2011002665A1 (en) 2011-01-06
US8796497B2 (en) 2014-08-05
US9227887B2 (en) 2016-01-05
EP2448887A4 (en) 2013-11-27
US20140066677A1 (en) 2014-03-06
AU2010266506A1 (en) 2011-12-22
TW201127785A (en) 2011-08-16
US20100331593A1 (en) 2010-12-30
KR20120115081A (ko) 2012-10-17
CN102471183A (zh) 2012-05-23
JP2012532105A (ja) 2012-12-13
US20140257005A1 (en) 2014-09-11
US8450546B2 (en) 2013-05-28

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