GB785657A - Catalyst for gas phase oxidation reactions and processes effected therewith - Google Patents

Catalyst for gas phase oxidation reactions and processes effected therewith

Info

Publication number
GB785657A
GB785657A GB26223/55A GB2622355A GB785657A GB 785657 A GB785657 A GB 785657A GB 26223/55 A GB26223/55 A GB 26223/55A GB 2622355 A GB2622355 A GB 2622355A GB 785657 A GB785657 A GB 785657A
Authority
GB
United Kingdom
Prior art keywords
platinum
gauge
layer
per cent
gas phase
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
GB26223/55A
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.)
EIDP Inc
Original Assignee
EI Du Pont de Nemours and 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 EI Du Pont de Nemours and Co filed Critical EI Du Pont de Nemours and Co
Publication of GB785657A publication Critical patent/GB785657A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B21/00—Nitrogen; Compounds thereof
    • C01B21/20—Nitrogen oxides; Oxyacids of nitrogen; Salts thereof
    • C01B21/24—Nitric oxide (NO)
    • C01B21/26—Preparation by catalytic or non-catalytic oxidation of ammonia
    • 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
    • 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
    • B01J23/42—Platinum

Abstract

A catalytic oxidation in the gas phase, e.g. for the production of hydrogen cyanide or nitric oxide, is carried out by passing a suitable gaseous mixture downwards first through one or more platinum or platinum alloy gauges and then through a layer of granular refractory material coated with platinum or a platinum alloy, the gauge and layer of coated granular material being in contact and gauge and coating each containing at least 50 per cent platinum. The gauge and coating may contain 80-90 per cent platinum and 10-20 per cent rhodium. The refractory material may be beryllium aluminium silicate, silica, porcelain or alumina of 6-10 mesh, and may be used in a layer 0.75-1.5 in. thick. The gauze may be activated for subsequent use by interposing between a previously activated gauze and already used coated granular material, and carrying out reaction for 3-30 hours. Hydrogen cyanide may be produced from ammonia, natural gas and air in the volume ratio of 1 : 2 : 10.
GB26223/55A 1954-09-17 1955-09-13 Catalyst for gas phase oxidation reactions and processes effected therewith Expired GB785657A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US785657XA 1954-09-17 1954-09-17

Publications (1)

Publication Number Publication Date
GB785657A true GB785657A (en) 1957-10-30

Family

ID=22144847

Family Applications (1)

Application Number Title Priority Date Filing Date
GB26223/55A Expired GB785657A (en) 1954-09-17 1955-09-13 Catalyst for gas phase oxidation reactions and processes effected therewith

Country Status (1)

Country Link
GB (1) GB785657A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0275681A1 (en) * 1986-12-23 1988-07-27 Johnson Matthey Public Limited Company Ammonia oxidation catalyst pack

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0275681A1 (en) * 1986-12-23 1988-07-27 Johnson Matthey Public Limited Company Ammonia oxidation catalyst pack

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