GB713335A - Catalyst recovery process - Google Patents

Catalyst recovery process

Info

Publication number
GB713335A
GB713335A GB1560451A GB1560451A GB713335A GB 713335 A GB713335 A GB 713335A GB 1560451 A GB1560451 A GB 1560451A GB 1560451 A GB1560451 A GB 1560451A GB 713335 A GB713335 A GB 713335A
Authority
GB
United Kingdom
Prior art keywords
hydrogen fluoride
boron trifluoride
tolualdehyde
evaporator
mixed
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
GB1560451A
Inventor
Carey Graff-Baker
Randal George Arthur New
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.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical Industries Ltd
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 Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Priority to GB1560451A priority Critical patent/GB713335A/en
Publication of GB713335A publication Critical patent/GB713335A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
    • C07C45/78—Separation; Purification; Stabilisation; Use of additives
    • C07C45/81—Separation; Purification; Stabilisation; Use of additives by change in the physical state, e.g. crystallisation
    • 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
    • B01J27/06—Halogens; Compounds thereof

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Catalysts (AREA)

Abstract

Hydrogen fluoride and boron trifluoride are separated from tolualdehyde-hydrogen fluoride-boron trifluoride compositions by evaporation in a continuous manner in the presence of an inert liquid. The compositions occur in the manufacture of tolualdehyde by reacting toluene and carbon monoxide in the presence of a hydrogen fluoride-boron trifluoride catalyst, for example as described in Specification 633,176, [Group IV (b)]. The composition is mixed with toluene or chlorobenzene and passed down a packed column fitted at the top with a reflux condenser and at the bottom with a boiler or a falling film evaporator. The evaporator may comprise an externally heated vertical tube lined with metal gauze down which the liquid flows as a film. Hydrogen fluoride and boron trifluoride pass out the top of the reflux condenser, while tolualdehyde mixed with the inert liquid is continuously removed from the evaporator. U.S.A. Specification 2,534,017 is referred to.
GB1560451A 1951-07-02 1951-07-02 Catalyst recovery process Expired GB713335A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1560451A GB713335A (en) 1951-07-02 1951-07-02 Catalyst recovery process

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1560451A GB713335A (en) 1951-07-02 1951-07-02 Catalyst recovery process

Publications (1)

Publication Number Publication Date
GB713335A true GB713335A (en) 1954-08-11

Family

ID=10062120

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1560451A Expired GB713335A (en) 1951-07-02 1951-07-02 Catalyst recovery process

Country Status (1)

Country Link
GB (1) GB713335A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3988424A (en) 1974-12-27 1976-10-26 Mitsubishi Gas Chemical Company, Inc. Method for decomposing an aromatic aldehyde-hydrogen fluoride-boron trifluoride complex

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3988424A (en) 1974-12-27 1976-10-26 Mitsubishi Gas Chemical Company, Inc. Method for decomposing an aromatic aldehyde-hydrogen fluoride-boron trifluoride complex

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