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AU568675B2 - Separating iodine from anhydrides, acids, esters - Google Patents

Separating iodine from anhydrides, acids, esters

Info

Publication number
AU568675B2
AU568675B2 AU32637/84A AU3263784A AU568675B2 AU 568675 B2 AU568675 B2 AU 568675B2 AU 32637/84 A AU32637/84 A AU 32637/84A AU 3263784 A AU3263784 A AU 3263784A AU 568675 B2 AU568675 B2 AU 568675B2
Authority
AU
Australia
Prior art keywords
iodine
carbonylation
anhydrides
esters
acids
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.)
Ceased
Application number
AU32637/84A
Other versions
AU3263784A (en
Inventor
Heinz Erpenbach
Klaus Gehrmann
Herbert Joest
Winfried Lork
Alexander Ohorodnik
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.)
Hoechst AG
Original Assignee
Hoechst AG
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 Hoechst AG filed Critical Hoechst AG
Publication of AU3263784A publication Critical patent/AU3263784A/en
Application granted granted Critical
Publication of AU568675B2 publication Critical patent/AU568675B2/en
Anticipated expiration legal-status Critical
Ceased 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
    • C07C51/42—Separation; Purification; Stabilisation; Use of additives
    • C07C51/487—Separation; Purification; Stabilisation; Use of additives by treatment giving rise to chemical modification
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
    • C07C51/54—Preparation of carboxylic acid anhydrides
    • C07C51/573—Separation; Purification; Stabilisation; Use of additives
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C67/00—Preparation of carboxylic acid esters
    • C07C67/48—Separation; Purification; Stabilisation; Use of additives
    • C07C67/60—Separation; Purification; Stabilisation; Use of additives by treatment giving rise to chemical modification

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Catalysts (AREA)
  • Furan Compounds (AREA)
  • Carbon And Carbon Compounds (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)

Abstract

1. Process for separating iodine and its compounds from the carbonylation products acetic acid, acetic anhydride or ethylidene diacetate obtained by subjecting dimethylether, methyl acetate or methanol to carbonylation, characterized in that, in order to reduce the quantity of total iodine contaminating the carbonylation products to less than 20 ppb iodine, the carbonylation products are treated at temperatures of 50 to 200 degrees C with hydrogen in the presence of at least one noble metal selected from group VIII of the Periodic System of the elements, and separated from the noble metal.
AU32637/84A 1983-09-01 1984-08-31 Separating iodine from anhydrides, acids, esters Ceased AU568675B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3331548 1983-09-01
DE19833331548 DE3331548A1 (en) 1983-09-01 1983-09-01 METHOD FOR SEPARATING IODINE AND ITS COMPOUNDS FROM CARBONYLATION PRODUCTS OBTAINED FROM CARBONYLATING DIMETHYL ETHER, METHYL ACETATE OR METHANOL

Publications (2)

Publication Number Publication Date
AU3263784A AU3263784A (en) 1985-03-07
AU568675B2 true AU568675B2 (en) 1988-01-07

Family

ID=6207989

Family Applications (1)

Application Number Title Priority Date Filing Date
AU32637/84A Ceased AU568675B2 (en) 1983-09-01 1984-08-31 Separating iodine from anhydrides, acids, esters

Country Status (9)

Country Link
EP (1) EP0143179B1 (en)
JP (1) JPS6072837A (en)
AT (1) ATE22550T1 (en)
AU (1) AU568675B2 (en)
BR (1) BR8404372A (en)
CA (1) CA1234149A (en)
DE (2) DE3331548A1 (en)
MX (1) MX160501A (en)
ZA (1) ZA846823B (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4792420A (en) * 1985-07-24 1988-12-20 Eastman Kodak Company Purification of carboxylic acid anhydrides
DE3534070A1 (en) * 1985-09-25 1987-04-02 Hoechst Ag METHOD FOR SEPARATING IODINE AND ITS COMPOUNDS FROM CARBONYLATION PRODUCTS OBTAINED FROM CARBONYLATING DIMETHYL ETHER, METHYL ACETATE OR METHANOL
DE3612504A1 (en) * 1985-09-30 1987-04-09 Hoechst Ag METHOD FOR SEPARATING IODINE AND ITS COMPOUNDS FROM CARBONYLATING PRODUCTS CONTAINING CARBBONYLATION OF DIMETHYL ETHER, METHYL ACETATE OR METHANOL
GB8822661D0 (en) * 1988-09-27 1988-11-02 Bp Chem Int Ltd Removal of iodine/iodide impurities
CA2088973C (en) * 1990-08-15 1998-09-29 Brent A. Tennant Process for the purification of acetic anhydride and acetic acid

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU8859882A (en) * 1981-09-23 1983-03-31 Hoechst A.G. Iodine compounds from off gas of carbonylation reactions
AU3205184A (en) * 1983-08-18 1985-02-21 Hoechst A.G. Iodine contaminants removal from acetic acid, acetic anhyride, or ethylidene diacetate
AU6311886A (en) * 1985-09-25 1987-03-26 Hoechst Aktiengesellschaft Process for separating iodine and its compounds from the products obtained on subjecting dimethylether, methyl acetate or methanol to a carbonylation reaction

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4246195A (en) * 1978-10-06 1981-01-20 Halcon Research And Development Corporation Purification of carbonylation products
DE3149094A1 (en) * 1981-12-11 1983-06-16 Hoechst Ag, 6230 Frankfurt METHOD FOR REMOVING ACETONE FROM REACTION MIXTURES FROM CARBONYLATION REACTIONS

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU8859882A (en) * 1981-09-23 1983-03-31 Hoechst A.G. Iodine compounds from off gas of carbonylation reactions
AU3205184A (en) * 1983-08-18 1985-02-21 Hoechst A.G. Iodine contaminants removal from acetic acid, acetic anhyride, or ethylidene diacetate
AU6311886A (en) * 1985-09-25 1987-03-26 Hoechst Aktiengesellschaft Process for separating iodine and its compounds from the products obtained on subjecting dimethylether, methyl acetate or methanol to a carbonylation reaction

Also Published As

Publication number Publication date
DE3460873D1 (en) 1986-11-06
EP0143179B1 (en) 1986-10-01
ZA846823B (en) 1985-05-29
MX160501A (en) 1990-03-12
JPH0528212B2 (en) 1993-04-23
AU3263784A (en) 1985-03-07
BR8404372A (en) 1985-07-30
CA1234149A (en) 1988-03-15
ATE22550T1 (en) 1986-10-15
DE3331548A1 (en) 1985-03-21
EP0143179A1 (en) 1985-06-05
JPS6072837A (en) 1985-04-24

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