GB1039574A - Unsaturated fatty acids - Google Patents

Unsaturated fatty acids

Info

Publication number
GB1039574A
GB1039574A GB3297463A GB3297463A GB1039574A GB 1039574 A GB1039574 A GB 1039574A GB 3297463 A GB3297463 A GB 3297463A GB 3297463 A GB3297463 A GB 3297463A GB 1039574 A GB1039574 A GB 1039574A
Authority
GB
United Kingdom
Prior art keywords
acid
oxide
silica
present
kieselguhr
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
GB3297463A
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.)
Ruhrchemie AG
Original Assignee
Ruhrchemie 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 Ruhrchemie AG filed Critical Ruhrchemie AG
Publication of GB1039574A publication Critical patent/GB1039574A/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
    • 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
    • B01J27/188—Phosphorus; Compounds thereof with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium with chromium, molybdenum, tungsten or polonium
    • B01J27/19—Molybdenum
    • B01J27/192—Molybdenum with bismuth
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C67/00—Preparation of carboxylic acid esters
    • C07C67/39—Preparation of carboxylic acid esters by oxidation of groups which are precursors for the acid moiety of the ester

Abstract

Aliphatic unsaturated monocarboxylic acids are prepared by oxidizing the corresponding aldehyde at a temperature between 200 DEG and 500 DEG C. at a pressure between 0.5 and 6 atmospheres in the presence of a catalyst comprising bismuth, molybdenum, tungsten, antimony, and trioxide, which contains also boric acid or oxide, and phosphoric acid or phosphorus pentoxide. Activators such as vanadium, ferric, chromic or manganic oxides may be present and silica as silica gel, diatomaceous earth, kieselguhr or silicic acid, or alumimium oxide may be used as a carrier. Aldehydes mentioned are acrolein, methacrolein, crotonaldehyde, pentanols and hexenols and substituted acrolein, and examples describe the preparation of acrylic acid with by-products such as esters, aldehydes and ketones.ALSO:Oxidation catalysts comprise an oxide of at least two of the metals molybdenum, bismuth, tungsten, antimony and tin, in admixture with boric acid or oxide and phosphoric acid or pentoxide. Promoters which may be vanadium, ferric, chromic, and monganic oxides may be present and silicon dioxide obtained for example by the thermal decomposition of silicon tetrachloride, is used as a carrier. Other carriers may be silica gel, diatomaceous earth, kieselguhr or silica acid gel or sol, aluminium oxide. Nitric acid may also be present. Examples describe the preparation of the catalysts.
GB3297463A 1962-09-14 1963-08-20 Unsaturated fatty acids Expired GB1039574A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DER0033508 1962-09-14

Publications (1)

Publication Number Publication Date
GB1039574A true GB1039574A (en) 1966-08-17

Family

ID=7404093

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3297463A Expired GB1039574A (en) 1962-09-14 1963-08-20 Unsaturated fatty acids

Country Status (4)

Country Link
CH (1) CH476662A (en)
DE (1) DE1468520A1 (en)
GB (1) GB1039574A (en)
NL (2) NL141857B (en)

Also Published As

Publication number Publication date
NL141857B (en) 1974-04-16
DE1468520A1 (en) 1968-12-05
NL297838A (en)
CH476662A (en) 1969-08-15

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