GB1504940A - Process for producing methacrylic acid from isobutylene by two step oxidation - Google Patents

Process for producing methacrylic acid from isobutylene by two step oxidation

Info

Publication number
GB1504940A
GB1504940A GB43461/75A GB4346175A GB1504940A GB 1504940 A GB1504940 A GB 1504940A GB 43461/75 A GB43461/75 A GB 43461/75A GB 4346175 A GB4346175 A GB 4346175A GB 1504940 A GB1504940 A GB 1504940A
Authority
GB
United Kingdom
Prior art keywords
oxides
antimony
molybdenum
methacrylic acid
methacrolein
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
GB43461/75A
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.)
AGC Inc
Original Assignee
Asahi Glass Co Ltd
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 Asahi Glass Co Ltd filed Critical Asahi Glass Co Ltd
Publication of GB1504940A publication Critical patent/GB1504940A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
    • C07C51/16—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation
    • C07C51/21—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with molecular oxygen
    • C07C51/25—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with molecular oxygen of unsaturated compounds containing no six-membered aromatic ring
    • C07C51/252—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with molecular oxygen of unsaturated compounds containing no six-membered aromatic ring of propene, butenes, acrolein or methacrolein
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
    • C07C45/27—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by oxidation
    • C07C45/32—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by oxidation with molecular oxygen
    • C07C45/33—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by oxidation with molecular oxygen of CHx-moieties
    • C07C45/34—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by oxidation with molecular oxygen of CHx-moieties in unsaturated compounds
    • C07C45/35—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by oxidation with molecular oxygen of CHx-moieties in unsaturated compounds in propene or isobutene
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
    • C07C51/42—Separation; Purification; Stabilisation; Use of additives
    • C07C51/43—Separation; Purification; Stabilisation; Use of additives by change of the physical state, e.g. crystallisation
    • C07C51/44—Separation; Purification; Stabilisation; Use of additives by change of the physical state, e.g. crystallisation by distillation
    • 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
    • Y02P20/582—Recycling of unreacted starting or intermediate materials

Abstract

1504940 Methacrylic acid ASAHI GLASS CO Ltd 22 Oct 1975 [23 Oct 1974] 43461/75 Heading C2C Methacrylic acid is prepared from isobutylene by a two stage oxidation process in which molecular oxygen and isobutylene are reacted in a molar ratio of 1 : 3 to 4 : 1 in the first step in the presence of a catalyst and a diluent gas comprising nitrogen, and oxygen and methacrolein in a molar ratio of 1À2 : 1 to 2À0 : 1 in the presence of a catalyst and a diluent gas comprising nitrogen and steam. The reaction products in the first and second stages and the methacrolein and methacrylic acid are separated and recovered and the methacrolein recycled as starting material in the second oxidation step. The mixture of reactants from the first and second steps may be cooled to a gas and liquid phase, the gas phase is contacted with water to form a solution which is distilled with the liquid phase to separate methacrolein and methacrylic acid. The catalysts used in the first step may be metal oxides supported on carriers for example molybdenum-antimony, molybdenum - tellurium, molybdenum - bismuth oxides, antimony - iron oxides with or without copper, phosphorus, cobalt, niobium or tantalum on carriers such as silica, alumina, silicon carbide and molecular sieves, at a temperature of 200-500‹ C. and a pressure 0À5 to 10 atmospheres. The catalysts used for the second step include those of the first and in addition molybdenum-thallium oxides with an oxide of rhenium, copper, cobalt vanadium or mercury; molybdenum - phosphorus oxides adding an oxide of vanadium, antimony, arsenic, aluminium or cobalt; molybdenumpalladium oxides with an oxide of antimony or arsenic; phosphomolybdic acid; ammonium, bismuth, antimony, potassium, cesium, rubidium or thallium salts of phosphomolybdic acid.
GB43461/75A 1974-10-23 1975-10-22 Process for producing methacrylic acid from isobutylene by two step oxidation Expired GB1504940A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP49121510A JPS5148609A (en) 1974-10-23 1974-10-23 NIDANSANKANYORUISOPUCHIRENKARANO METAKU

Publications (1)

Publication Number Publication Date
GB1504940A true GB1504940A (en) 1978-03-22

Family

ID=14812973

Family Applications (1)

Application Number Title Priority Date Filing Date
GB43461/75A Expired GB1504940A (en) 1974-10-23 1975-10-22 Process for producing methacrylic acid from isobutylene by two step oxidation

Country Status (6)

Country Link
JP (1) JPS5148609A (en)
DE (1) DE2547536C2 (en)
FR (1) FR2289482A1 (en)
GB (1) GB1504940A (en)
IT (1) IT1043608B (en)
NL (1) NL7512354A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9732023B2 (en) 2013-03-18 2017-08-15 Evonik Roehm Gmbh Process for preparation of methacrylic acid and methacrylic acid esters
CN110694687A (en) * 2019-11-07 2020-01-17 曲阜师范大学 Loaded nano heteropolyacid catalyst for preparing methacrylic acid by oxidizing methacrolein and preparation method thereof

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52108917A (en) * 1976-03-11 1977-09-12 Nippon Shokubai Kagaku Kogyo Co Ltd Preparation of acrylic acid by vapor-phase catalytic oxidation of prop ylene
JPS5353613A (en) * 1976-10-26 1978-05-16 Nippon Zeon Co Ltd Preparation of methacrylic acid
JPS6059891B2 (en) * 1977-09-28 1985-12-27 住友化学工業株式会社 Method for separating methacrolein and methacrylic acid
NL8001385A (en) * 1979-03-15 1980-09-17 Halcon Res & Dev METHOD FOR THE PREPARATION OF METHACRYLIC ACID.
JPS6145541Y2 (en) * 1981-05-20 1986-12-22
CA1299193C (en) * 1986-07-17 1992-04-21 Gordon Gene Harkreader Anhydrous diluents for the propylene oxidation reaction to acrolein and acrolein oxidation to acrylic acid
CA1305178C (en) * 1986-08-21 1992-07-14 Gordon Gene Harkreader Anhydrous diluent process for the propylene oxidation reaction to acrolein and acrolein oxidation to acrylic acid
KR100900849B1 (en) 2001-06-29 2009-06-04 바스프 에스이 Method for producing methacrylic acid from isobutane

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5534783B2 (en) * 1972-03-09 1980-09-09

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9732023B2 (en) 2013-03-18 2017-08-15 Evonik Roehm Gmbh Process for preparation of methacrylic acid and methacrylic acid esters
CN110694687A (en) * 2019-11-07 2020-01-17 曲阜师范大学 Loaded nano heteropolyacid catalyst for preparing methacrylic acid by oxidizing methacrolein and preparation method thereof
CN110694687B (en) * 2019-11-07 2022-10-04 曲阜师范大学 Loaded nano heteropolyacid catalyst for preparing methacrylic acid by oxidizing methacrolein and preparation method thereof

Also Published As

Publication number Publication date
IT1043608B (en) 1980-02-29
JPS5148609A (en) 1976-04-26
NL7512354A (en) 1976-04-27
DE2547536A1 (en) 1976-04-29
DE2547536C2 (en) 1984-06-28
JPS5713538B2 (en) 1982-03-17
FR2289482A1 (en) 1976-05-28
FR2289482B1 (en) 1980-08-08

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee