DE3842839C2 - - Google Patents

Info

Publication number
DE3842839C2
DE3842839C2 DE19883842839 DE3842839A DE3842839C2 DE 3842839 C2 DE3842839 C2 DE 3842839C2 DE 19883842839 DE19883842839 DE 19883842839 DE 3842839 A DE3842839 A DE 3842839A DE 3842839 C2 DE3842839 C2 DE 3842839C2
Authority
DE
Germany
Prior art keywords
stainless steel
catalyst
crushed
composition
reduction
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 - Fee Related
Application number
DE19883842839
Other languages
German (de)
English (en)
Other versions
DE3842839A1 (de
Inventor
Rolf 4200 Oberhausen De Bernhard
Bernd 4100 Duisburg De Eichhorn
Frank Dipl.-Ing. 4322 Sprockhoevel De Leimbach
Gerd 5144 Wegberg De Schneider
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.)
Pierburg GmbH
Original Assignee
Pierburg GmbH
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 Pierburg GmbH filed Critical Pierburg GmbH
Priority to DE19883842839 priority Critical patent/DE3842839A1/de
Publication of DE3842839A1 publication Critical patent/DE3842839A1/de
Application granted granted Critical
Publication of DE3842839C2 publication Critical patent/DE3842839C2/de
Granted 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
    • B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
    • B01J37/04—Mixing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
    • B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
    • B01D53/9404—Removing only nitrogen compounds
    • B01D53/9409—Nitrogen oxides
    • B01D53/9413—Processes characterised by a specific 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
    • B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
    • B01J23/76—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
    • B01J23/84—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36 with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
    • B01J23/85—Chromium, molybdenum or tungsten
    • B01J23/88—Molybdenum
    • B01J23/881—Molybdenum and iron

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Biomedical Technology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Catalysts (AREA)
  • Exhaust Gas Treatment By Means Of Catalyst (AREA)
DE19883842839 1988-12-20 1988-12-20 Katalysator zur reduktion von stickoxiden Granted DE3842839A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19883842839 DE3842839A1 (de) 1988-12-20 1988-12-20 Katalysator zur reduktion von stickoxiden

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19883842839 DE3842839A1 (de) 1988-12-20 1988-12-20 Katalysator zur reduktion von stickoxiden

Publications (2)

Publication Number Publication Date
DE3842839A1 DE3842839A1 (de) 1990-06-21
DE3842839C2 true DE3842839C2 (enrdf_load_stackoverflow) 1992-02-20

Family

ID=6369606

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19883842839 Granted DE3842839A1 (de) 1988-12-20 1988-12-20 Katalysator zur reduktion von stickoxiden

Country Status (1)

Country Link
DE (1) DE3842839A1 (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
DE3842839A1 (de) 1990-06-21

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Legal Events

Date Code Title Description
OP8 Request for examination as to paragraph 44 patent law
D2 Grant after examination
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: PIERBURG AG, 41460 NEUSS, DE

8339 Ceased/non-payment of the annual fee