GB1470034A - Platinum - Google Patents

Platinum

Info

Publication number
GB1470034A
GB1470034A GB127675A GB127675A GB1470034A GB 1470034 A GB1470034 A GB 1470034A GB 127675 A GB127675 A GB 127675A GB 127675 A GB127675 A GB 127675A GB 1470034 A GB1470034 A GB 1470034A
Authority
GB
United Kingdom
Prior art keywords
amorphous
finely divided
particles
reducing
refractory support
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
GB127675A
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.)
BP PLC
Original Assignee
BP PLC
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 BP PLC filed Critical BP PLC
Priority to GB127675A priority Critical patent/GB1470034A/en
Publication of GB1470034A publication Critical patent/GB1470034A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B11/00—Obtaining noble metals
    • C22B11/02—Obtaining noble metals by dry processes
    • 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
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F9/00—Making metallic powder or suspensions thereof
    • B22F9/16—Making metallic powder or suspensions thereof using chemical processes
    • B22F9/18—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds
    • B22F9/20—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds starting from solid metal compounds
    • B22F9/22—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds starting from solid metal compounds using gaseous reductors

Abstract

1470034 Amorphous Pt particles BRITISH PETROLEUM Co Ltd 12 Dec 1975 [13 Jan 1975] 1276/75 Heading C7D Amorphous platinum metal particles are characterized in that they do not produce the x-ray diffraction pattern characteristic of crystalline platinum. The amorphous Pt particles may be produced by bringing a material containing finely divided Pt in a highly oxidized state on a refractory support, e.g. alumina, silica, magnesia or a zeolite, to a temperature of at least 300‹C in a non-reducing atmosphere, reducing with hydrogen at a temperature of at least 300‹C under super-atmospheric pressure and contacting the reduced material with a solvent, e.g. caustic soda, HF, HNO 3 , HCl, H 2 SO 4 , so that the support is dissolved and separating the suspended amorphous Pt metal particles from the solution, e.g. by centrifuging, filtration, flocculation or the use of membranes. The finely divided Pt starting material may be prepared from commercial reforming catalysts by regeneration, burning in oxidizing gas, or rejuvenation, treating with O 2 and Cl 2 , or may be prepared by treating the refractory support with a solution of a Pt compound, e.g. by impregnation or ion-exchange, and reducing the metal compound to produce finely divided Pt on the refractory support. The amorphous Pt product may be used in electrodes for fuel cells and batteries.
GB127675A 1975-12-12 1975-12-12 Platinum Expired GB1470034A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB127675A GB1470034A (en) 1975-12-12 1975-12-12 Platinum

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB127675A GB1470034A (en) 1975-12-12 1975-12-12 Platinum

Publications (1)

Publication Number Publication Date
GB1470034A true GB1470034A (en) 1977-04-14

Family

ID=9719155

Family Applications (1)

Application Number Title Priority Date Filing Date
GB127675A Expired GB1470034A (en) 1975-12-12 1975-12-12 Platinum

Country Status (1)

Country Link
GB (1) GB1470034A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5316990A (en) * 1991-05-04 1994-05-31 Johnson Matthey Public Limited Company Catalyst material
CN110684905A (en) * 2019-11-29 2020-01-14 西安凯立新材料股份有限公司 Method for leaching metal platinum in platinum alumina catalyst by wet method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5316990A (en) * 1991-05-04 1994-05-31 Johnson Matthey Public Limited Company Catalyst material
CN110684905A (en) * 2019-11-29 2020-01-14 西安凯立新材料股份有限公司 Method for leaching metal platinum in platinum alumina catalyst by wet method

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee