GB1260480A - Solid supported metallic palladium catalysts - Google Patents

Solid supported metallic palladium catalysts

Info

Publication number
GB1260480A
GB1260480A GB6137068A GB6137068A GB1260480A GB 1260480 A GB1260480 A GB 1260480A GB 6137068 A GB6137068 A GB 6137068A GB 6137068 A GB6137068 A GB 6137068A GB 1260480 A GB1260480 A GB 1260480A
Authority
GB
United Kingdom
Prior art keywords
palladium
catalyst
metallic palladium
water
chlorine
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
GB6137068A
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.)
Standard Oil Co
Original Assignee
Standard Oil Co
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 Standard Oil Co filed Critical Standard Oil Co
Publication of GB1260480A publication Critical patent/GB1260480A/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
    • B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
    • B01J23/40—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals of the platinum group metals
    • B01J23/44—Palladium
    • 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
    • B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
    • B01J23/40—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals of the platinum group 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
    • B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
    • B01J37/02—Impregnation, coating or precipitation
    • 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
    • B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
    • B01J37/02—Impregnation, coating or precipitation
    • B01J37/03—Precipitation; Co-precipitation

Landscapes

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

Abstract

1,260,480. Palladium-on-carbon catalysts. STANDARD OIL CO. 24 Dec., 1968 [29 Dec., 1967], No. 61370/68. Heading B1E. Catalyst consisting of metallic palladium having a crystallite surface area upward from 0.6 m<SP>2</SP>/g supported on carbon is prepared by a process which comprises contacting catalyst consisting of metallic palladium having a crystallite surface area less than 0.6 m<SP>2</SP>/g with chlorine, optionally saturated with water at 25‹C, at a temperature below 540‹C until the palladium is converted to palladium chloride, removing unreacted chlorine at a temperature below 540‹C and thereafter reducing the palladium chloride to metallic palladium with hydrogen at a temperature between 100 and 540‹C. The metallic palladium may constitute from 0.1 to 10 weight per cent of the catalyst. The catalyst may be in the form of filaments, gauze, flakes, spheres, pellets, granules or powder. As exemplified, catalyst consisting of metallic palladium supported on carbon granules is activated (Example 1) or reactivated when thermally deactivated (Example 2) by contact at 370‹C with chlorine saturated with water at 25‹C and thereafter at 205‹C with hydrogen, and copper-deactivated catalyst consisting of metallic palladium supported on carbon granules is reactivated by contact with boiling formic acid and, after removal of the formic acid from the catalyst by evaporation, for example by boiling, and washing with water, at 300‹C with chlorine saturated with water and thereafter at 430‹C with hydrogen (Example 3). The catalyst may be used in the purification of terephthalic acid containing pformylbenzoic acid as impurity; in this connection and otherwise, reference is made to Speoifcation 1,259,297.
GB6137068A 1967-12-29 1968-12-24 Solid supported metallic palladium catalysts Expired GB1260480A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US69441367A 1967-12-29 1967-12-29

Publications (1)

Publication Number Publication Date
GB1260480A true GB1260480A (en) 1972-01-19

Family

ID=24788722

Family Applications (1)

Application Number Title Priority Date Filing Date
GB6137068A Expired GB1260480A (en) 1967-12-29 1968-12-24 Solid supported metallic palladium catalysts

Country Status (8)

Country Link
BE (1) BE726200A (en)
BR (1) BR6805173D0 (en)
DE (1) DE1816775A1 (en)
ES (1) ES361949A1 (en)
FR (1) FR1600093A (en)
GB (1) GB1260480A (en)
LU (1) LU57687A1 (en)
NL (1) NL6818381A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4039026A1 (en) * 1990-12-07 1992-06-11 Bayer Ag METHOD FOR PRODUCING ANILINE

Also Published As

Publication number Publication date
FR1600093A (en) 1970-07-20
LU57687A1 (en) 1969-04-21
ES361949A1 (en) 1970-11-16
NL6818381A (en) 1969-07-01
BE726200A (en) 1969-05-29
BR6805173D0 (en) 1973-01-04
DE1816775A1 (en) 1969-08-21

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Legal Events

Date Code Title Description
PS Patent sealed
PE20 Patent expired after termination of 20 years