SG11202007289SA - Preparation method for molybdenum-tellurium-vanadium-niobium-based odh catalysts - Google Patents

Preparation method for molybdenum-tellurium-vanadium-niobium-based odh catalysts

Info

Publication number
SG11202007289SA
SG11202007289SA SG11202007289SA SG11202007289SA SG11202007289SA SG 11202007289S A SG11202007289S A SG 11202007289SA SG 11202007289S A SG11202007289S A SG 11202007289SA SG 11202007289S A SG11202007289S A SG 11202007289SA SG 11202007289S A SG11202007289S A SG 11202007289SA
Authority
SG
Singapore
Prior art keywords
tellurium
niobium
vanadium
molybdenum
preparation
Prior art date
Application number
SG11202007289SA
Inventor
Xiaoliang Gao
Marie Barnes
Vasily Simanzhenkov
David Sullivan
Yoonhee Kim
Hanna Drag
Wit Perry De
Original Assignee
Nova Chem Int Sa
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 Nova Chem Int Sa filed Critical Nova Chem Int Sa
Publication of SG11202007289SA publication Critical patent/SG11202007289SA/en

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J23/00Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/002Mixed oxides other than spinels, e.g. perovskite
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J23/00Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/16Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
    • B01J23/20Vanadium, niobium or tantalum
    • B01J23/22Vanadium
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J23/00Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/16Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
    • B01J23/24Chromium, molybdenum or tungsten
    • B01J23/28Molybdenum
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J27/00Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
    • B01J27/02Sulfur, selenium or tellurium; Compounds thereof
    • B01J27/057Selenium or tellurium; Compounds thereof
    • B01J27/0576Tellurium; Compounds thereof
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J35/00Catalysts, in general, characterised by their form or physical properties
    • B01J35/40Catalysts, in general, characterised by their form or physical properties characterised by dimensions, e.g. grain size
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J37/00Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
    • B01J37/0009Use of binding agents; Moulding; Pressing; Powdering; Granulating; Addition of materials ameliorating the mechanical properties of the product catalyst
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J37/00Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
    • B01J37/0009Use of binding agents; Moulding; Pressing; Powdering; Granulating; Addition of materials ameliorating the mechanical properties of the product catalyst
    • B01J37/0018Addition of a binding agent or of material, later completely removed among others as result of heat treatment, leaching or washing,(e.g. forming of pores; protective layer, desintegrating by heat)
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J37/00Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
    • B01J37/0009Use of binding agents; Moulding; Pressing; Powdering; Granulating; Addition of materials ameliorating the mechanical properties of the product catalyst
    • B01J37/0027Powdering
    • B01J37/0045Drying a slurry, e.g. spray drying
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J37/00Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
    • B01J37/0009Use of binding agents; Moulding; Pressing; Powdering; Granulating; Addition of materials ameliorating the mechanical properties of the product catalyst
    • B01J37/0063Granulating
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J37/00Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
    • B01J37/02Impregnation, coating or precipitation
    • B01J37/03Precipitation; Co-precipitation
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J37/00Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
    • B01J37/04Mixing
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J37/00Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
    • B01J37/06Washing
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J37/00Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
    • B01J37/08Heat treatment
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J37/00Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
    • B01J37/08Heat treatment
    • B01J37/082Decomposition and pyrolysis
    • B01J37/088Decomposition of a metal salt
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J37/00Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
    • B01J37/08Heat treatment
    • B01J37/10Heat treatment in the presence of water, e.g. steam
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C11/00Aliphatic unsaturated hydrocarbons
    • C07C11/02Alkenes
    • C07C11/04Ethylene
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C2/00Preparation of hydrocarbons from hydrocarbons containing a smaller number of carbon atoms
    • C07C2/76Preparation of hydrocarbons from hydrocarbons containing a smaller number of carbon atoms by condensation of hydrocarbons with partial elimination of hydrogen
    • C07C2/82Preparation of hydrocarbons from hydrocarbons containing a smaller number of carbon atoms by condensation of hydrocarbons with partial elimination of hydrogen oxidative coupling
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C2/00Preparation of hydrocarbons from hydrocarbons containing a smaller number of carbon atoms
    • C07C2/76Preparation of hydrocarbons from hydrocarbons containing a smaller number of carbon atoms by condensation of hydrocarbons with partial elimination of hydrogen
    • C07C2/82Preparation of hydrocarbons from hydrocarbons containing a smaller number of carbon atoms by condensation of hydrocarbons with partial elimination of hydrogen oxidative coupling
    • C07C2/84Preparation of hydrocarbons from hydrocarbons containing a smaller number of carbon atoms by condensation of hydrocarbons with partial elimination of hydrogen oxidative coupling catalytic
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C5/00Preparation of hydrocarbons from hydrocarbons containing the same number of carbon atoms
    • C07C5/32Preparation of hydrocarbons from hydrocarbons containing the same number of carbon atoms by dehydrogenation with formation of free hydrogen
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C5/00Preparation of hydrocarbons from hydrocarbons containing the same number of carbon atoms
    • C07C5/42Preparation of hydrocarbons from hydrocarbons containing the same number of carbon atoms by dehydrogenation with a hydrogen acceptor
    • C07C5/48Preparation of hydrocarbons from hydrocarbons containing the same number of carbon atoms by dehydrogenation with a hydrogen acceptor with oxygen as an acceptor
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2523/00Constitutive chemical elements of heterogeneous catalysts
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C2523/00Catalysts comprising metals or metal oxides or hydroxides, not provided for in group C07C2521/00
    • C07C2523/16Catalysts 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
    • C07C2523/20Vanadium, niobium or tantalum
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C2523/00Catalysts comprising metals or metal oxides or hydroxides, not provided for in group C07C2521/00
    • C07C2523/16Catalysts 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
    • C07C2523/20Vanadium, niobium or tantalum
    • C07C2523/22Vanadium
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C2523/00Catalysts comprising metals or metal oxides or hydroxides, not provided for in group C07C2521/00
    • C07C2523/16Catalysts 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
    • C07C2523/24Chromium, molybdenum or tungsten
    • C07C2523/28Molybdenum
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C2523/00Catalysts comprising metals or metal oxides or hydroxides, not provided for in group C07C2521/00
    • C07C2523/16Catalysts 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
    • C07C2523/32Manganese, technetium or rhenium
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00Technologies relating to chemical industry
    • Y02P20/50Improvements relating to the production of bulk chemicals
    • Y02P20/52Improvements relating to the production of bulk chemicals using catalysts, e.g. selective catalysts

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Chemical Kinetics & Catalysis (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)
SG11202007289SA 2018-02-02 2019-01-29 Preparation method for molybdenum-tellurium-vanadium-niobium-based odh catalysts SG11202007289SA (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CA2993683A CA2993683A1 (en) 2018-02-02 2018-02-02 Method for in situ high activity odh catalyst
PCT/IB2019/050718 WO2019150259A1 (en) 2018-02-02 2019-01-29 Preparation method for molybdenum-tellurium-vanadium-niobium-based odh catalysts

Publications (1)

Publication Number Publication Date
SG11202007289SA true SG11202007289SA (en) 2020-08-28

Family

ID=65904485

Family Applications (1)

Application Number Title Priority Date Filing Date
SG11202007289SA SG11202007289SA (en) 2018-02-02 2019-01-29 Preparation method for molybdenum-tellurium-vanadium-niobium-based odh catalysts

Country Status (13)

Country Link
US (1) US10730036B2 (en)
EP (1) EP3746220A1 (en)
JP (1) JP2021523820A (en)
KR (1) KR20200118424A (en)
CN (1) CN111629825A (en)
AR (1) AR113738A1 (en)
AU (1) AU2019213752A1 (en)
CA (1) CA2993683A1 (en)
CL (1) CL2020001963A1 (en)
MX (1) MX2020007549A (en)
PE (1) PE20212359A1 (en)
SG (1) SG11202007289SA (en)
WO (1) WO2019150259A1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2900775C (en) * 2015-08-20 2023-10-10 Nova Chemicals Corporation Improved oxidative dehydrogenation catalyst
DE102017000848A1 (en) * 2017-01-31 2018-08-02 Clariant Produkte (Deutschland) Gmbh Process for the preparation of molybdenum-containing mixed oxide materials
DE102017000862A1 (en) * 2017-01-31 2018-08-02 Clariant Produkte (Deutschland) Gmbh Synthesis of a MoVNbTe catalyst with reduced content of niobium and tellurium and higher activity for the oxidative dehydrogenation of ethane
DE102017000861A1 (en) * 2017-01-31 2018-08-02 Clariant Produkte (Deutschland) Gmbh Synthesis of a MoVTeNb catalyst from inexpensive metal oxides
MX2020014162A (en) 2018-07-19 2021-03-09 Nova Chem Int Sa Catalysts for the oxidative dehydrogenation of alkanes.
CA3050795A1 (en) 2018-08-03 2020-02-03 Nova Chemicals Corporation Oxidative dehydrogenation catalysts
CA3050720A1 (en) 2018-08-03 2020-02-03 Nova Chemicals Corporation Oxidative dehydrogenation catalyst compositions

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2181600B1 (en) * 2001-07-17 2004-01-16 Univ Valencia Politecnica A CATALYST FOR SELECTIVE OXIDATION AND AMOXIDATION OF ALCANOSY / OR ALKENS, PARTICULARLY IN PROCESSES TO OBTAIN ACRYLIC ACID, ACRYLONITRILE AND DERIVATIVES OF THE SAME.
US6858768B2 (en) * 2001-08-01 2005-02-22 Conocophillips Company Oxidative dehydrogenation of alkanes to olefins using an oxide surface
ES2192983B1 (en) * 2002-01-31 2004-09-16 Universidad Politecnica De Valencia. A CATALYST FOR OXIDATIVE DEHYDROGENATION FROM ETANO TO ETENO.
KR100954045B1 (en) 2007-08-13 2010-04-20 주식회사 엘지화학 Method for preparing improved catalyst for the production of acrylic acid
RU2358958C1 (en) * 2007-12-25 2009-06-20 Леонид Модестович Кустов Method of preparing active phase of catalyst for oxidative dehydrogenation of hydrocarbons, catalyst based on it, method of obtaining it and method of oxidative dehydrogenating ethane and its use
DE112009000404T5 (en) 2008-02-25 2010-12-30 Sakthivel, Ayyamperumal, Dr., Vadodara Phase-enriched MoVTeNb mixed oxide catalyst and process for its preparation
US8519210B2 (en) 2009-04-02 2013-08-27 Lummus Technology Inc. Process for producing ethylene via oxidative dehydrogenation (ODH) of ethane
US8105971B2 (en) 2009-04-02 2012-01-31 Lummus Technology Inc. Process for making catalysts useful for the conversion of paraffins to olefins
WO2013164418A1 (en) * 2012-05-04 2013-11-07 Shell Internationale Research Maatschappij B.V. Catalyst for alkane oxidative dehydrogenation and/or alkene oxidation
US9908101B2 (en) 2012-11-07 2018-03-06 Council Of Scientific & Industrial Research Catalyst for selective dehydrogenation / oxidative dehydrogenation reactions and process for the preparation thereof
CA2900775C (en) * 2015-08-20 2023-10-10 Nova Chemicals Corporation Improved oxidative dehydrogenation catalyst
CA2933484C (en) * 2016-06-20 2023-09-19 Nova Chemicals Corporation Improved catalyst for ethane odh
CA2936448C (en) * 2016-07-19 2024-02-20 Nova Chemicals Corporation Controlled pressure hydrothermal treatment of odh catalyst

Also Published As

Publication number Publication date
EP3746220A1 (en) 2020-12-09
KR20200118424A (en) 2020-10-15
MX2020007549A (en) 2020-09-09
PE20212359A1 (en) 2021-12-21
BR112020014951A2 (en) 2020-12-08
JP2021523820A (en) 2021-09-09
WO2019150259A1 (en) 2019-08-08
US10730036B2 (en) 2020-08-04
AR113738A1 (en) 2020-06-03
CN111629825A (en) 2020-09-04
CA2993683A1 (en) 2019-08-02
CL2020001963A1 (en) 2021-01-29
AU2019213752A1 (en) 2020-08-20
US20190240647A1 (en) 2019-08-08

Similar Documents

Publication Publication Date Title
SG11202007289SA (en) Preparation method for molybdenum-tellurium-vanadium-niobium-based odh catalysts
EP3398960A4 (en) Method for preparing sermaglutide
GB201800298D0 (en) Method
EP3321272A4 (en) Method for preparing l-bpa
IL283331A (en) Method for preparing n-phenylpyrazole-1-carboxamides
EP3315196A4 (en) Method for recovering catalyst
HK1255014A1 (en) Methods for preparing substituted 5,6-dihydro-6-phenylbenzo[f]isoquinolin-2-amine
EP3539941A4 (en) Method for preparing trimethylolpropane
GB2598463B (en) Improved methods for angiography
GB201506117D0 (en) Method for chromatography
SG11202103845RA (en) Dehydrogenation catalysts and methods for preparing and using them
GB201907882D0 (en) Methods
GB2586305B (en) Catalyst preparation method
EP3235564A4 (en) Method for preparing catalyst
EP3655379A4 (en) Methods for preparing bis-tetrahydroisoquinoline-containing compounds
EP3543236A4 (en) Method for preparing avibactam intermediate
EP3766869A4 (en) Simple preparation method for avibactam
ZA201702351B (en) Revaprazan hydrochloride polymorphs and preparation method therefor.
GB201913716D0 (en) Methods
GB201820751D0 (en) Methods for preparing intermediates
GB201820754D0 (en) Methods for preparing compounds
EP3543237A4 (en) Simple preparation method for avibactam intermediate
IL282108A (en) Preparation method for efinaconazole
EP3308855A4 (en) Method for preparing catalyst for oxidative dehydrogenation
SG11201704201VA (en) Catalyst and preparation method thereof, and method for preparing isobutylene by applying the same