GB589796A - Improvements in and relating to the activation of catalysts - Google Patents

Improvements in and relating to the activation of catalysts

Info

Publication number
GB589796A
GB589796A GB8530/45A GB853045A GB589796A GB 589796 A GB589796 A GB 589796A GB 8530/45 A GB8530/45 A GB 8530/45A GB 853045 A GB853045 A GB 853045A GB 589796 A GB589796 A GB 589796A
Authority
GB
United Kingdom
Prior art keywords
ammonium oxalate
acid
solution
oxalic acid
oxalate
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
GB8530/45A
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.)
FRANCIS ROBERT HIMSWORTH
Imperial Chemical Industries Ltd
Original Assignee
FRANCIS ROBERT HIMSWORTH
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 FRANCIS ROBERT HIMSWORTH, Imperial Chemical Industries Ltd filed Critical FRANCIS ROBERT HIMSWORTH
Priority to GB8530/45A priority Critical patent/GB589796A/en
Priority to FR925281D priority patent/FR925281A/en
Publication of GB589796A publication Critical patent/GB589796A/en
Priority to DEP853A priority patent/DE861695C/en
Priority to DEP969D priority patent/DE841445C/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • B01J23/90—Regeneration or reactivation
    • B01J23/96—Regeneration or reactivation of catalysts comprising metals, oxides or hydroxides of the noble metals
    • 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
    • B01J38/00—Regeneration or reactivation of catalysts, in general
    • B01J38/48—Liquid treating or treating in liquid phase, e.g. dissolved or suspended
    • B01J38/60—Liquid treating or treating in liquid phase, e.g. dissolved or suspended using acids
    • B01J38/62—Liquid treating or treating in liquid phase, e.g. dissolved or suspended using acids organic
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B17/00—Sulfur; Compounds thereof
    • C01B17/69—Sulfur trioxide; Sulfuric acid
    • C01B17/74—Preparation
    • C01B17/76—Preparation by contact processes
    • C01B17/78—Preparation by contact processes characterised by the catalyst used
    • C01B17/79—Preparation by contact processes characterised by the catalyst used containing vanadium
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/50—Improvements relating to the production of bulk chemicals
    • Y02P20/584—Recycling of catalysts

Landscapes

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

Abstract

Platinum catalysts, especially of the type in which the finely-divided metal is supported on silica gel for use in the oxidation of sulphur dioxide to sulphur trioxide, are activated or re-activated by treatment with a solution containing ammonium oxalate and/or acid ammonium oxalate. The process may comprise a preliminary treatment with hot ten per cent. nitric acid, digestion with the oxalate solution at a temperature close to, but not above, its boiling point, drying at about 120 DEG C, and heating to temperatures up to 400 DEG C, the digestion and heating steps preferably being repeated one or more times. The catalyst is washed with pure water before and after the treatments with the acid and the actuating solution. Acid ammonium oxalate may be formed in situ by mixing solutions of ammonium oxalate and oxalic acid, and free oxalic acid may also be present. Saturated ammonium oxalate solution, or a solution containing 10-20 grams each per litre of ammonium oxalate and oxalic acid are suitable for use in the process.
GB8530/45A 1945-04-06 1945-04-06 Improvements in and relating to the activation of catalysts Expired GB589796A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
GB8530/45A GB589796A (en) 1945-04-06 1945-04-06 Improvements in and relating to the activation of catalysts
FR925281D FR925281A (en) 1945-04-06 1946-04-06 Catalyst activation process
DEP853A DE861695C (en) 1945-04-06 1948-12-19 Process for the regeneration of platinum catalysts
DEP969D DE841445C (en) 1945-04-06 1948-12-23 Process for the regeneration of platinum catalysts

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8530/45A GB589796A (en) 1945-04-06 1945-04-06 Improvements in and relating to the activation of catalysts

Publications (1)

Publication Number Publication Date
GB589796A true GB589796A (en) 1947-06-30

Family

ID=9854194

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8530/45A Expired GB589796A (en) 1945-04-06 1945-04-06 Improvements in and relating to the activation of catalysts

Country Status (3)

Country Link
DE (2) DE861695C (en)
FR (1) FR925281A (en)
GB (1) GB589796A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8303596A (en) * 1982-10-18 1984-05-16 Exxon Research Engineering Co METHOD FOR REMOVING METAL POLLUTANTS FROM HYDROCONVECTION CATALYSTS
US4522928A (en) * 1982-10-18 1985-06-11 Exxon Research And Engineering Co. Removal of metal comtaminants from catalysts using buffered oxalic acid

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1077357B (en) * 1956-05-19 1960-03-10 Degussa Process for the regeneration of platinum metal catalysts on ceramic carriers for processes for fuel refinement

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8303596A (en) * 1982-10-18 1984-05-16 Exxon Research Engineering Co METHOD FOR REMOVING METAL POLLUTANTS FROM HYDROCONVECTION CATALYSTS
US4522928A (en) * 1982-10-18 1985-06-11 Exxon Research And Engineering Co. Removal of metal comtaminants from catalysts using buffered oxalic acid

Also Published As

Publication number Publication date
DE841445C (en) 1952-06-16
FR925281A (en) 1947-08-29
DE861695C (en) 1953-01-05

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