GB1499839A - Activation of catalyst for dehydrogenation of alkyl aromatic hydrocarbons - Google Patents

Activation of catalyst for dehydrogenation of alkyl aromatic hydrocarbons

Info

Publication number
GB1499839A
GB1499839A GB35407/75A GB3540775A GB1499839A GB 1499839 A GB1499839 A GB 1499839A GB 35407/75 A GB35407/75 A GB 35407/75A GB 3540775 A GB3540775 A GB 3540775A GB 1499839 A GB1499839 A GB 1499839A
Authority
GB
United Kingdom
Prior art keywords
dehydrogenation
alkyl aromatic
aromatic hydrocarbon
catalyst
feed
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
GB35407/75A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dow Chemical Co
Original Assignee
Dow Chemical Co
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 Dow Chemical Co filed Critical Dow Chemical Co
Priority to GB35407/75A priority Critical patent/GB1499839A/en
Publication of GB1499839A publication Critical patent/GB1499839A/en
Priority to MY1978407A priority patent/MY7800407A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
    • B01J23/76—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
    • B01J23/84—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36 with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
    • B01J23/85—Chromium, molybdenum or tungsten
    • B01J23/86—Chromium
    • B01J23/862—Iron and chromium
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C5/00—Preparation of hydrocarbons from hydrocarbons containing the same number of carbon atoms
    • C07C5/32—Preparation of hydrocarbons from hydrocarbons containing the same number of carbon atoms by dehydrogenation with formation of free hydrogen
    • C07C5/327—Formation of non-aromatic carbon-to-carbon double bonds only
    • C07C5/333—Catalytic processes
    • C07C5/3332—Catalytic processes with metal oxides or metal sulfides
    • Y—GENERAL 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/50—Improvements relating to the production of bulk chemicals
    • Y02P20/584—Recycling of catalysts

Abstract

1499839 Regenerating dehydrogenation catalysts DOW CHEMICAL CO 27 Aug 1975 35407/75 Heading C5E [Also in Division B1] A method of activating a self-regenerative dehydrogenation catalyst (used for dehydrogenating alkyl aromatic hydrocarbons having from 1 to 2 six-membered rings and from 1 to 2 alkyl groups of 2-3 carbon atoms to the corresponding alkenyl aromatic hydrocarbon, by passing a mixture of steam and said alkyl aromatic hydrocarbon over said catalyst at a temperature of 600-700‹ C.) comprises interrupting the feed of said alkyl aromatic hydrocarbon and continuing the feed of steam at said temperature range for a period of 7-30 minutes each 24-48 hours; resuming the feed of said alkyl aromatic hydrocarbon under high severity reaction conditions; and repeating said activation cycles and said alkyl aromatic hydrocarbon dehydrogenation cycles. Self-regenerative catalysts are those containing one or more oxides of Fe, Zn, Cr or Mg as the major component and an alkali metal oxide, hydroxide or carbonate. Examples describe the dehydrogenation of ethyl toluene, ethylbenzene, isopropyl benzene, diethyl benzene using calcined catalyst comprising Fe 2 O 3 , ZnO, K 2 CO 3 , Cu 2 O, Na 2 Cr 2 O 7 , alumina cement, methyl cellulose and graphite.
GB35407/75A 1975-08-27 1975-08-27 Activation of catalyst for dehydrogenation of alkyl aromatic hydrocarbons Expired GB1499839A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB35407/75A GB1499839A (en) 1975-08-27 1975-08-27 Activation of catalyst for dehydrogenation of alkyl aromatic hydrocarbons
MY1978407A MY7800407A (en) 1975-08-27 1978-12-31 Activation of catalyst for dehydrogenation of alkyl aromatic hydrocarbons

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB35407/75A GB1499839A (en) 1975-08-27 1975-08-27 Activation of catalyst for dehydrogenation of alkyl aromatic hydrocarbons

Publications (1)

Publication Number Publication Date
GB1499839A true GB1499839A (en) 1978-02-01

Family

ID=10377377

Family Applications (1)

Application Number Title Priority Date Filing Date
GB35407/75A Expired GB1499839A (en) 1975-08-27 1975-08-27 Activation of catalyst for dehydrogenation of alkyl aromatic hydrocarbons

Country Status (2)

Country Link
GB (1) GB1499839A (en)
MY (1) MY7800407A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2247412A (en) * 1989-03-17 1992-03-04 Mobil Oil Corp Regeneration of Fischer-Tropsch catalysts
CN113877594A (en) * 2020-07-02 2022-01-04 中国石油化工股份有限公司 Process for dehydrogenating alkylaromatic hydrocarbons

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2247412A (en) * 1989-03-17 1992-03-04 Mobil Oil Corp Regeneration of Fischer-Tropsch catalysts
CN113877594A (en) * 2020-07-02 2022-01-04 中国石油化工股份有限公司 Process for dehydrogenating alkylaromatic hydrocarbons
CN113877594B (en) * 2020-07-02 2023-08-04 中国石油化工股份有限公司 Method for dehydrogenating alkyl aromatic hydrocarbon

Also Published As

Publication number Publication date
MY7800407A (en) 1978-12-31

Similar Documents

Publication Publication Date Title
CA2081797A1 (en) Alkane dehydrogenation
GB973564A (en) A process for the dehydrogenation of hydrocarbons
JPS5645422A (en) Selective dealkylation process
ES476462A1 (en) Rhenium containing hydroalkylation catalyst, process for its production and its use.
US3725493A (en) Oxidative dehydrogenation
ES471028A1 (en) Ethylation of mono alkyl benzene
US3907916A (en) Dehydrogenation of alkyl aromatic hydrocarbons
ES469548A1 (en) Vapor phase isomerization of methyl-substituted aromatic hydrocarbons improved by using highly diluted zeolite catalyst
DE3366081D1 (en) Process for isomerising styrene oxide or homologues to beta-phenylaldehydes
GB1499839A (en) Activation of catalyst for dehydrogenation of alkyl aromatic hydrocarbons
GB1535087A (en) Producing aromatic hydrocarbons of high purity
WO1983000687A1 (en) Selectively calcined dehydrogenation catalyst
US2363768A (en) Manufacture of para-xylene
US2407373A (en) Dehydrogenation of hydrocarbons
GB1357920A (en) Method of dehydrogenating compounds
US3335197A (en) Method for preparation of vinyl aromatics
US2950258A (en) Dehydrogenation catalyst
JPS5633036A (en) Catalyst for steam reforming and its manufacture
US3732327A (en) Oxidative-dehydrogenation catalysts
KR800001173B1 (en) Dehydrogenation of alkyl aromatic hydrocarbons
US3325552A (en) Dehydrogenation-cyclization
US3240832A (en) Method for converting c6 and higher aliphatic hydrocarbons to aromatics using as catalyst a free alkali metal on a carrier
ES379543A1 (en) A procedure for the dehydrogenation of a dehydrogenable hydrocarbon. (Machine-translation by Google Translate, not legally binding)
JPS57163325A (en) Hydrogenating and dealkylating method
FR2322116A1 (en) Activation of alkyl aromatic dehydrogenation catalysts - by intermittently stopping hydrocarbon feed but maintaining steam flow

Legal Events

Date Code Title Description
PS Patent sealed
PE20 Patent expired after termination of 20 years

Effective date: 19950826