GB786930A - A process for preparing phthalic acids by oxidation of dialkyl benzenes - Google Patents

A process for preparing phthalic acids by oxidation of dialkyl benzenes

Info

Publication number
GB786930A
GB786930A GB36767/55A GB3676755A GB786930A GB 786930 A GB786930 A GB 786930A GB 36767/55 A GB36767/55 A GB 36767/55A GB 3676755 A GB3676755 A GB 3676755A GB 786930 A GB786930 A GB 786930A
Authority
GB
United Kingdom
Prior art keywords
acetic acid
products
acid
compound
reaction mixture
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
GB36767/55A
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.)
Bataafsche Petroleum Maatschappij NV
Original Assignee
Bataafsche Petroleum Maatschappij NV
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 Bataafsche Petroleum Maatschappij NV filed Critical Bataafsche Petroleum Maatschappij NV
Publication of GB786930A publication Critical patent/GB786930A/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
    • C07C51/255—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with molecular oxygen of compounds containing six-membered aromatic rings without ring-splitting
    • C07C51/265—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with molecular oxygen of compounds containing six-membered aromatic rings without ring-splitting having alkyl side chains which are oxidised to carboxyl groups
    • 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
    • B01J31/00—Catalysts comprising hydrides, coordination complexes or organic compounds
    • B01J31/02—Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides
    • B01J31/04—Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides containing carboxylic acids or their salts
    • 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
    • B01J2231/00—Catalytic reactions performed with catalysts classified in B01J31/00
    • B01J2231/70—Oxidation reactions, e.g. epoxidation, (di)hydroxylation, dehydrogenation and analogues
    • 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
    • B01J2531/00—Additional information regarding catalytic systems classified in B01J31/00
    • B01J2531/20—Complexes comprising metals of Group II (IIA or IIB) as the central metal
    • B01J2531/25—Barium
    • 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
    • B01J2531/00—Additional information regarding catalytic systems classified in B01J31/00
    • B01J2531/70—Complexes comprising metals of Group VII (VIIB) as the central metal
    • B01J2531/72—Manganese
    • 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
    • B01J2531/00—Additional information regarding catalytic systems classified in B01J31/00
    • B01J2531/80—Complexes comprising metals of Group VIII as the central metal
    • B01J2531/84—Metals of the iron group
    • B01J2531/845—Cobalt

Landscapes

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

Abstract

A phthalic acid is prepared by oxidizing a dialkylbenzene by means of oxygen or an oxygen-containing gas present in sufficient excess adequately to remove volatile by-products and acetic acid, in a medium consisting mainly of acetic acid, in the presence of a catalyst comprising a manganese compound together with either a cobalt compound or a barium compound or both a cobalt compound and a barium compound and under a pressure between 2 and 10 atmospheres (absolute), the reaction conditions being such that volatile by-products and acetic acid are removed from the reaction mixture in the vapour phase and substantially all the heat of reaction is withdrawn from the reaction mixture by the evaporation of the volatile by-products and acetic acid therefrom. The process prevents the build-up of by-products such as formic acid, water, formaldehyde and methyl acetate in the reaction mixture. The preferred temperature is 100-140 DEG C. In an example, an acetic acid solution of p-diisopropylbenzene, p-isopropylbenzoic acid, cobalt acetate and manganese acetate was oxidized with air to give terephthalic acid under the conditions specified above. Specification 737,439 is referred to.
GB36767/55A 1954-12-29 1955-12-22 A process for preparing phthalic acids by oxidation of dialkyl benzenes Expired GB786930A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL786930X 1954-12-29

Publications (1)

Publication Number Publication Date
GB786930A true GB786930A (en) 1957-11-27

Family

ID=19832302

Family Applications (1)

Application Number Title Priority Date Filing Date
GB36767/55A Expired GB786930A (en) 1954-12-29 1955-12-22 A process for preparing phthalic acids by oxidation of dialkyl benzenes

Country Status (5)

Country Link
BE (1) BE543957A (en)
DE (1) DE1008279B (en)
FR (1) FR1145252A (en)
GB (1) GB786930A (en)
NL (1) NL108519C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004002933A1 (en) * 2002-06-27 2004-01-08 Eurotecnica Development & Licensing S.P.A. Process for the separation of the water produced in the catalytic oxidation of aromatic hydrocarbons to polycarboxylic aromatic acids

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL252888A (en) * 1960-01-30
DE1270030C2 (en) * 1962-04-27 1973-07-19 METHOD FOR PURIFYING TEREPHTHALIC ACID

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004002933A1 (en) * 2002-06-27 2004-01-08 Eurotecnica Development & Licensing S.P.A. Process for the separation of the water produced in the catalytic oxidation of aromatic hydrocarbons to polycarboxylic aromatic acids

Also Published As

Publication number Publication date
NL108519C (en)
DE1008279B (en) 1957-05-16
FR1145252A (en) 1957-10-24
BE543957A (en)

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