BE819841A - Catalysts for nitrogen oxide redn. in effluent gases - with metal components supported on natural tuffs - Google Patents

Catalysts for nitrogen oxide redn. in effluent gases - with metal components supported on natural tuffs

Info

Publication number
BE819841A
BE819841A BE148460A BE148460A BE819841A BE 819841 A BE819841 A BE 819841A BE 148460 A BE148460 A BE 148460A BE 148460 A BE148460 A BE 148460A BE 819841 A BE819841 A BE 819841A
Authority
BE
Belgium
Prior art keywords
catalysts
tuffs
redn
gases
natural
Prior art date
Application number
BE148460A
Other languages
French (fr)
Inventor
T Tamura
N Fujita
Ch Matsuura
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 filed Critical
Publication of BE819841A publication Critical patent/BE819841A/en

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
    • B01J29/00—Catalysts comprising molecular sieves
    • B01J29/04—Catalysts comprising molecular sieves having base-exchange properties, e.g. crystalline zeolites
    • B01J29/06—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof
    • B01J29/70—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of types characterised by their specific structure not provided for in groups B01J29/08 - B01J29/65
    • B01J29/72—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of types characterised by their specific structure not provided for in groups B01J29/08 - B01J29/65 containing iron group metals, noble metals or copper
    • B01J29/76—Iron group metals or copper
    • 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
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/86—Catalytic processes
    • B01D53/8621—Removing nitrogen compounds
    • B01D53/8625—Nitrogen oxides
    • B01D53/8628—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
    • B01J29/00—Catalysts comprising molecular sieves
    • B01J29/04—Catalysts comprising molecular sieves having base-exchange properties, e.g. crystalline zeolites
    • B01J29/06—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof
    • B01J29/18—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of the mordenite type
    • B01J29/26—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of the mordenite type containing arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
    • 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
    • B01J2229/00—Aspects of molecular sieve catalysts not covered by B01J29/00
    • B01J2229/30—After treatment, characterised by the means used
    • B01J2229/40—Special temperature treatment, i.e. other than just for template removal

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Environmental & Geological Engineering (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Catalysts (AREA)
  • Exhaust Gas Treatment By Means Of Catalyst (AREA)

Abstract

Catalysts for the redn. of nitrogen oxides (NOx) in effluent gases comprise natural tuffs consisting essentially of SiO2, Al2O3 and H2O, contg. a total of 1-10 wt.% alkali(ne earth) metal oxides and having a compsn. similar to that of mordenite and crionite, supporting a catalyst component comprising one or more Group IIb and/or VIII metals and/or Cr and/or Mn. The catalysts are inexpensive and have a high activity; they can be used to treat gases contg. large amts. of NOx (e.g. waste gases from boilers) as well as gases contg. small amts. of NOx. Their activity is not affected by H2O, CO2 or O2, or by SO2 in amts. up to several thousand ppm.
BE148460A 1973-09-13 1974-09-12 Catalysts for nitrogen oxide redn. in effluent gases - with metal components supported on natural tuffs BE819841A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10349573A JPS5315708B2 (en) 1973-09-13 1973-09-13

Publications (1)

Publication Number Publication Date
BE819841A true BE819841A (en) 1974-12-31

Family

ID=14355560

Family Applications (1)

Application Number Title Priority Date Filing Date
BE148460A BE819841A (en) 1973-09-13 1974-09-12 Catalysts for nitrogen oxide redn. in effluent gases - with metal components supported on natural tuffs

Country Status (2)

Country Link
JP (1) JPS5315708B2 (en)
BE (1) BE819841A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5256088A (en) * 1975-11-01 1977-05-09 Kogyo Kaihatsu Kenkyusho Kk Removal of nitrogen oxides
JPS5552720Y2 (en) * 1977-06-02 1980-12-06
JPS6372327A (en) * 1987-08-28 1988-04-02 Kogyo Kaihatsu Kenkyusho Removing method for ammonia and hydrocarbon compound in gas

Also Published As

Publication number Publication date
JPS5315708B2 (en) 1978-05-26
JPS5053289A (en) 1975-05-12

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