GB993415A - Improvements relating to the manufacture of aliphatic dicarboxylic acid anhydrides - Google Patents

Improvements relating to the manufacture of aliphatic dicarboxylic acid anhydrides

Info

Publication number
GB993415A
GB993415A GB2930561A GB2930561A GB993415A GB 993415 A GB993415 A GB 993415A GB 2930561 A GB2930561 A GB 2930561A GB 2930561 A GB2930561 A GB 2930561A GB 993415 A GB993415 A GB 993415A
Authority
GB
United Kingdom
Prior art keywords
ene
vanadium
molybdenum
phosphorus
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.)
Expired
Application number
GB2930561A
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.)
Petro Tex Chemical Corp
Original Assignee
Petro Tex Chemical 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 Petro Tex Chemical Corp filed Critical Petro Tex Chemical Corp
Publication of GB993415A publication Critical patent/GB993415A/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
    • B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/002—Mixed oxides other than spinels, e.g. perovskite
    • 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
    • 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
    • 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
    • B01J2523/00—Constitutive chemical elements of heterogeneous catalysts

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Furan Compounds (AREA)
  • Catalysts (AREA)

Abstract

A process for the vapour phase catalytic oxidation of olefins to aliphatic dicarboxylic acid anhydrides comprises passing a gaseous mixture comprising oxygen and an olefin at a temperature between 250 DEG and 700 DEG C. over a catalyst which comprises a complex of oxides of molybdenum, vanadium and phosphorus, in which the molybdenum, vanadium and phosphorus are present in the atomic ratios MO : V : P : : 8 to 11 : 2 to 4 : 0.8 to 1.1, coated on a silica gel carrier which has been prepared by the hydrolysis of a tetra-alkyl orthosilicate, e.g. tetraethyl orthosilicate. Useful olefins are those containing from 4 to 6 carbon atoms, e.g. but-1-ene, but-2-ene and 3-methylbut-1-ene; olefinically unsaturated refinery by-products obtained in the production of gasoline may also be used. The oxygen used may be pure or in admixture with an inert gas, such as nitrogen or helium; dry air is preferably employed. The process may be carried out in multiple tube heat exchanger-type reactors. The anhydrides produced may be recovered by direct condensation or by quenching with water to form the corresponding dicarboxylic acid which is then dehydrated to produce the anhydride. In the examples, but-2-ene is oxidized to maleic anhydride which is recovered by absorption in water and subsequent dehydration of the acid solution produced.ALSO:An oxidation catalyst comprises a complex of oxides of molybdenum, vanadium and phosphorus, in which the molybdenum, vanadium and phosphorus are present in the atomic ratios Mo:V:P::8 to 11:2 to 4:0,8 to 1,1, coated on a silica gel carrier which has been prepared by the hydrolysis of a tetra-alkyl orthosilicate, e.g. tetraethyl orthosilicate. The catalyst may be prepared by adding suitably obtained silica gel to an aqueous solution of ammonium heptamolybdate, ammonium metavanadate and orthophosphoric acid, present in appropriate proportions, heating the mixture to dryness over a steam bath and, if desired, pressing into pellets. The catalyst may be used in fixed or fluid bed systems and is employed for oxidizing olefins to acid anhydrides (see Division C2).
GB2930561A 1960-09-19 1961-08-14 Improvements relating to the manufacture of aliphatic dicarboxylic acid anhydrides Expired GB993415A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US5669460A 1960-09-19 1960-09-19

Publications (1)

Publication Number Publication Date
GB993415A true GB993415A (en) 1965-05-26

Family

ID=22006041

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2930561A Expired GB993415A (en) 1960-09-19 1961-08-14 Improvements relating to the manufacture of aliphatic dicarboxylic acid anhydrides

Country Status (1)

Country Link
GB (1) GB993415A (en)

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