FR2362108A1 - Perfectionnements a la preparation de l'acide methacrylique - Google Patents

Perfectionnements a la preparation de l'acide methacrylique

Info

Publication number
FR2362108A1
FR2362108A1 FR7625071A FR7625071A FR2362108A1 FR 2362108 A1 FR2362108 A1 FR 2362108A1 FR 7625071 A FR7625071 A FR 7625071A FR 7625071 A FR7625071 A FR 7625071A FR 2362108 A1 FR2362108 A1 FR 2362108A1
Authority
FR
France
Prior art keywords
acid
isobutyric acid
isobutyric
carrier
catalyst
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.)
Granted
Application number
FR7625071A
Other languages
English (en)
Other versions
FR2362108B1 (fr
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.)
Mitsubishi Kasei Corp
Original Assignee
Mitsubishi Kasei Corp
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 Mitsubishi Kasei Corp filed Critical Mitsubishi Kasei Corp
Priority to FR7625071A priority Critical patent/FR2362108A1/fr
Publication of FR2362108A1 publication Critical patent/FR2362108A1/fr
Application granted granted Critical
Publication of FR2362108B1 publication Critical patent/FR2362108B1/fr
Granted 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
    • B01J27/00—Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
    • B01J27/14—Phosphorus; Compounds thereof
    • B01J27/186—Phosphorus; Compounds thereof with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
    • B01J27/195—Phosphorus; Compounds thereof with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium with vanadium, niobium or tantalum
    • B01J27/198—Vanadium
    • B01J27/199—Vanadium with chromium, molybdenum, tungsten or polonium
    • 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
    • B01J23/16—Catalysts 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
    • B01J23/24—Chromium, molybdenum or tungsten
    • B01J23/30—Tungsten
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
    • C07C51/347—Preparation of carboxylic acids or their salts, halides or anhydrides by reactions not involving formation of carboxyl groups
    • C07C51/377—Preparation of carboxylic acids or their salts, halides or anhydrides by reactions not involving formation of carboxyl groups by splitting-off hydrogen or functional groups; by hydrogenolysis of functional groups

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)

Abstract

L'invention concerne la préparation de l'acide méthacrylique par déshydrogénation oxydante d'acide isobutyrique. On utilise un catalyseur contenant un hétéro-polyacide et/ou une forme réduite de cet hétéro-polyacide supporté sur une matière siliceuse présentant une aptitude élevée à absorber l'eau et l'on conduit la réaction en phase vapeur. Le taux de transformation et la sélectivité sont améliorés ainsi que la durabilité du catalyseur en fonctionnement continu.
FR7625071A 1976-08-18 1976-08-18 Perfectionnements a la preparation de l'acide methacrylique Granted FR2362108A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7625071A FR2362108A1 (fr) 1976-08-18 1976-08-18 Perfectionnements a la preparation de l'acide methacrylique

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7625071A FR2362108A1 (fr) 1976-08-18 1976-08-18 Perfectionnements a la preparation de l'acide methacrylique

Publications (2)

Publication Number Publication Date
FR2362108A1 true FR2362108A1 (fr) 1978-03-17
FR2362108B1 FR2362108B1 (fr) 1979-01-12

Family

ID=9176963

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7625071A Granted FR2362108A1 (fr) 1976-08-18 1976-08-18 Perfectionnements a la preparation de l'acide methacrylique

Country Status (1)

Country Link
FR (1) FR2362108A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0079491A1 (fr) * 1981-11-13 1983-05-25 Röhm Gmbh Procédé de production de l'acide méthacrylique
EP0263027A1 (fr) * 1986-09-29 1988-04-06 Nippon Fine Chemical Co., Ltd. Catalyseur, de glycosidation et procédé de préparation de dérivés glycosés

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
NEANT *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0079491A1 (fr) * 1981-11-13 1983-05-25 Röhm Gmbh Procédé de production de l'acide méthacrylique
EP0263027A1 (fr) * 1986-09-29 1988-04-06 Nippon Fine Chemical Co., Ltd. Catalyseur, de glycosidation et procédé de préparation de dérivés glycosés

Also Published As

Publication number Publication date
FR2362108B1 (fr) 1979-01-12

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Legal Events

Date Code Title Description
ST Notification of lapse