GB337680A - Improvements in or relating to wire-gauze catalysers - Google Patents

Improvements in or relating to wire-gauze catalysers

Info

Publication number
GB337680A
GB337680A GB545/30A GB54530A GB337680A GB 337680 A GB337680 A GB 337680A GB 545/30 A GB545/30 A GB 545/30A GB 54530 A GB54530 A GB 54530A GB 337680 A GB337680 A GB 337680A
Authority
GB
United Kingdom
Prior art keywords
layers
gauze
per
catalysers
relating
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
GB545/30A
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.)
AZOGENO ANONIMA PER LA Soc
Original Assignee
AZOGENO ANONIMA PER LA Soc
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 AZOGENO ANONIMA PER LA Soc filed Critical AZOGENO ANONIMA PER LA Soc
Publication of GB337680A publication Critical patent/GB337680A/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
    • 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
    • B01J23/46—Ruthenium, rhodium, osmium or iridium
    • B01J23/468—Iridium
    • B01J35/58—

Abstract

337,680. Toniolo, C., and Azogeno Soc. Anon. per la Fabricazione dell Ammoniaca Sintetica e Prodotti Derivati. July 25, 1929, [Convention date]. Catalytic apparatus.- In catalyzers consisting of a plurality of superimposed layers of platinum or other metallic gauze, the layers which are first impinged upon by the reaction gases are made of coarser mesh than the subsequent layers which are less subject to attack by the gases. For example, a three-layer element may be of 700, 1500., and 3000 meshes per sq. cm. respectively. In a, modification coarser layers are placed on both sides of the finer layers, and the element is reversed when the first layers have become aged. Such an element may have four layers of 800, 3000, 3000, and 800 meshes respectively. The invention 'is particularly applicable to ammonia oxidation.
GB545/30A 1929-07-25 1930-01-06 Improvements in or relating to wire-gauze catalysers Expired GB337680A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT337680X 1929-07-25

Publications (1)

Publication Number Publication Date
GB337680A true GB337680A (en) 1930-11-06

Family

ID=11238098

Family Applications (1)

Application Number Title Priority Date Filing Date
GB545/30A Expired GB337680A (en) 1929-07-25 1930-01-06 Improvements in or relating to wire-gauze catalysers

Country Status (2)

Country Link
FR (1) FR699162A (en)
GB (1) GB337680A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4469666A (en) * 1979-11-08 1984-09-04 Johnson Matthey & Co., Limited Catalyst units for producing hydrocyanic acid
DE102012106732A1 (en) * 2012-07-24 2014-01-30 Heraeus Materials Technology Gmbh & Co. Kg catalyst

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4469666A (en) * 1979-11-08 1984-09-04 Johnson Matthey & Co., Limited Catalyst units for producing hydrocyanic acid
DE102012106732A1 (en) * 2012-07-24 2014-01-30 Heraeus Materials Technology Gmbh & Co. Kg catalyst
EP2689841A3 (en) * 2012-07-24 2014-06-04 Heraeus Materials Technology GmbH & Co. KG Catalyst
US9056307B2 (en) 2012-07-24 2015-06-16 Heraeus Deutschland GmbH & Co. KG Catalyst
US9126187B2 (en) 2012-07-24 2015-09-08 Heraeus Materials Technology Gmbh & Co. Kg Catalyst

Also Published As

Publication number Publication date
FR699162A (en) 1931-02-11

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