NO307987B1 - Three-dimensional knitted precious metal nets for conducting catalytic gas reactions - Google Patents

Three-dimensional knitted precious metal nets for conducting catalytic gas reactions

Info

Publication number
NO307987B1
NO307987B1 NO951323A NO951323A NO307987B1 NO 307987 B1 NO307987 B1 NO 307987B1 NO 951323 A NO951323 A NO 951323A NO 951323 A NO951323 A NO 951323A NO 307987 B1 NO307987 B1 NO 307987B1
Authority
NO
Norway
Prior art keywords
catalytic gas
gas reactions
precious metal
dimensional knitted
metal nets
Prior art date
Application number
NO951323A
Other languages
Norwegian (no)
Other versions
NO951323D0 (en
NO951323L (en
Inventor
Siegfried Blass
Horst Duebler
Dietmar Koenigs
Thomas Stoll
Harald Voss
Original Assignee
Degussa
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6514702&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=NO307987(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Degussa filed Critical Degussa
Publication of NO951323D0 publication Critical patent/NO951323D0/en
Publication of NO951323L publication Critical patent/NO951323L/en
Publication of NO307987B1 publication Critical patent/NO307987B1/en

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
    • C01B21/265—Preparation by catalytic or non-catalytic oxidation of ammonia characterised by the catalyst
    • 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
    • B01J35/00—Catalysts, in general, characterised by their form or physical properties
    • B01J35/50—Catalysts, in general, characterised by their form or physical properties characterised by their shape or configuration
    • B01J35/58—Fabrics or filaments
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B1/00—Weft knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes
    • D04B1/14—Other fabrics or articles characterised primarily by the use of particular thread materials
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2101/00—Inorganic fibres
    • D10B2101/20—Metallic fibres
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2403/00—Details of fabric structure established in the fabric forming process
    • D10B2403/02—Cross-sectional features
    • D10B2403/021—Lofty fabric with equidistantly spaced front and back plies, e.g. spacer fabrics
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2403/00—Details of fabric structure established in the fabric forming process
    • D10B2403/02—Cross-sectional features
    • D10B2403/024—Fabric incorporating additional compounds
    • D10B2403/0242—Fabric incorporating additional compounds enhancing chemical properties

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Textile Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Catalysts (AREA)
  • Knitting Of Fabric (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Exhaust Gas Treatment By Means Of Catalyst (AREA)

Abstract

3D knitted metal gauze for performing catalytic gas reactions, esp. for catalytic oxidn. of NH3 with air for HNO3, prodn. is knitted in 2 or more layers and the meshes of the individual layers are bound together by up to 10 (pref. 2-6) pile fibres per mesh. These fibres aligned at an angle of 0-50 deg. to the direction of flow.
NO951323A 1994-04-06 1995-04-05 Three-dimensional knitted precious metal nets for conducting catalytic gas reactions NO307987B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4411774A DE4411774C1 (en) 1994-04-06 1994-04-06 Metal gauze catalyst for gas reaction, esp. ammonia oxidn. to nitric acid

Publications (3)

Publication Number Publication Date
NO951323D0 NO951323D0 (en) 1995-04-05
NO951323L NO951323L (en) 1995-10-09
NO307987B1 true NO307987B1 (en) 2000-07-03

Family

ID=6514702

Family Applications (1)

Application Number Title Priority Date Filing Date
NO951323A NO307987B1 (en) 1994-04-06 1995-04-05 Three-dimensional knitted precious metal nets for conducting catalytic gas reactions

Country Status (11)

Country Link
EP (1) EP0680787B1 (en)
JP (1) JP3774744B2 (en)
CN (1) CN1090994C (en)
AT (1) ATE175134T1 (en)
BR (1) BR9501433A (en)
CZ (1) CZ289818B6 (en)
DE (2) DE4411774C1 (en)
ES (1) ES2127956T3 (en)
NO (1) NO307987B1 (en)
PL (1) PL178774B1 (en)
RU (1) RU2095135C1 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
PL202850B1 (en) * 2001-02-08 2009-07-31 Umicore Ag & Co Kg Three-dimensional catalyst gauzes knitted in two or more layers
DE10105624A1 (en) * 2001-02-08 2002-10-02 Omg Ag & Co Kg Knitted catalyst gauze used in heterogeneously catalyzed gas reactions catalyzed by noble metals, such as oxidation of ammonia with atmospheric oxygen for producing nitric acid, comprises weft threads
CN100398200C (en) * 2005-11-23 2008-07-02 贵研铂业股份有限公司 Platinum alloy knitted catalysis net for ammonia oxidation
DE102007034715A1 (en) 2007-07-23 2009-01-29 Evonik Röhm Gmbh Reactor for the production of hydrogen cyanide by the Andrussow method
EP2202201B1 (en) * 2008-12-23 2016-04-20 Clariant Prodotti (Italia) SpA Ammonia oxidation catalysts
DE102011016044A1 (en) 2011-04-04 2012-10-04 Jens Kopatsch Preparing woven, knitted and/or crocheted metal-, precious metal- or alloy grids, comprises deforming or molding wire with non-circular peripheral shape via pulling, rolling, pressing or shape-changing radiation to produce shaped wire
DE102020120927B4 (en) 2020-08-07 2024-01-25 Jens Kopatsch Process for producing networks with a tertiary structure for the catalytic conversion of fluids
EP4215662B1 (en) * 2022-01-24 2024-06-12 Heraeus Precious Metals GmbH & Co. KG Method for the manufacture of noble metal gauzes on flat knitting machines
DE202024101437U1 (en) 2024-03-22 2024-03-28 Umicore Ag & Co. Kg Knitted net packing for ammonia decomposition

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2829035A1 (en) * 1978-07-01 1980-01-10 Heraeus Gmbh W C Silver or platinum metal catalyst in form of fibre felt - used for ammonia oxidn. and mfr. of hydrogen cyanide and formaldehyde
EP0061304A1 (en) * 1981-03-18 1982-09-29 Johnson Matthey Public Limited Company Three dimensional interstitial catalyst support, its manufacture and use
DE68900928D1 (en) * 1988-10-12 1992-04-09 Johnson Matthey Plc METAL FABRIC.
GB9016787D0 (en) * 1990-07-31 1990-09-12 Heywood Alan E Improvements in or relating to catalysts and getter systems
GB9016788D0 (en) * 1990-07-31 1990-09-12 Heywood Alan E Improvements in or relating to self-gettering catalysts
DE4206199C1 (en) * 1991-03-16 1992-11-12 Degussa Ag, 6000 Frankfurt, De

Also Published As

Publication number Publication date
ATE175134T1 (en) 1999-01-15
CZ86195A3 (en) 1995-11-15
NO951323D0 (en) 1995-04-05
EP0680787B1 (en) 1998-12-30
ES2127956T3 (en) 1999-05-01
NO951323L (en) 1995-10-09
DE59504661D1 (en) 1999-02-11
CN1090994C (en) 2002-09-18
CN1116966A (en) 1996-02-21
BR9501433A (en) 1996-06-04
CZ289818B6 (en) 2002-04-17
PL308005A1 (en) 1995-10-16
JPH07275705A (en) 1995-10-24
RU2095135C1 (en) 1997-11-10
JP3774744B2 (en) 2006-05-17
PL178774B1 (en) 2000-06-30
EP0680787A1 (en) 1995-11-08
RU95104893A (en) 1997-01-27
DE4411774C1 (en) 1995-08-17

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Legal Events

Date Code Title Description
CB Opposition filed (par. 26,5 patents act)

Opponent name: NORSK HYDRO ASA, 0240 OSLO, NO

Effective date: 20010330

MK1K Patent expired