NL7412538A - Redn catalysts for removing nitrogen oxides from waste gases - contg metal components on a synthetic zeolite support - Google Patents

Redn catalysts for removing nitrogen oxides from waste gases - contg metal components on a synthetic zeolite support

Info

Publication number
NL7412538A
NL7412538A NL7412538A NL7412538A NL7412538A NL 7412538 A NL7412538 A NL 7412538A NL 7412538 A NL7412538 A NL 7412538A NL 7412538 A NL7412538 A NL 7412538A NL 7412538 A NL7412538 A NL 7412538A
Authority
NL
Netherlands
Prior art keywords
catalysts
redn
nitrogen oxides
metal components
waste gases
Prior art date
Application number
NL7412538A
Other languages
Dutch (nl)
Original Assignee
Kogyo Kaihatsu Kenkyusho Ind R
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
Priority claimed from JP10349573A external-priority patent/JPS5315708B2/ja
Priority claimed from JP10349673A external-priority patent/JPS5315709B2/ja
Priority claimed from JP11027773A external-priority patent/JPS5315710B2/ja
Priority claimed from JP11027873A external-priority patent/JPS5315711B2/ja
Priority claimed from JP10870273A external-priority patent/JPS548351B2/ja
Application filed by Kogyo Kaihatsu Kenkyusho Ind R filed Critical Kogyo Kaihatsu Kenkyusho Ind R
Publication of NL7412538A publication Critical patent/NL7412538A/en

Links

Classifications

    • 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
    • B01J29/061—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof containing metallic elements added to the zeolite
    • 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
    • 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

In the redn. catalysts for the removal of nitrogen oxides (NOx) from effluent gases described in the Parent Patent, comprising one or more Group Ib, IIb and/or VIII metals and/or Cr and/or Mn supported on a natural tuff, the latter is replaced by a synthetic zeolites. The catalysts have high selectivity, are unaffected by the presence of O2, H2O, CO2 and SO2 and can be used at low temps. (e.g. 100-500 degrees C). The specification is an addition to 819841, in which the catalyst support is a natural tuff with a compsn. similar to that of mordenite or crionite, consisting essentially of SiO2, Al2O3 and H2O and contg. a total of 1-10 wt. % of alklai(ne earth) metal oxides.
NL7412538A 1973-09-13 1974-09-23 Redn catalysts for removing nitrogen oxides from waste gases - contg metal components on a synthetic zeolite support NL7412538A (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
JP10349573A JPS5315708B2 (en) 1973-09-13 1973-09-13
JP10349673A JPS5315709B2 (en) 1973-09-13 1973-09-13
JP11027773A JPS5315710B2 (en) 1973-09-26 1973-09-26
JP11027873A JPS5315711B2 (en) 1973-09-26 1973-09-26
JP10870273A JPS548351B2 (en) 1973-09-27 1973-09-27

Publications (1)

Publication Number Publication Date
NL7412538A true NL7412538A (en) 1975-04-02

Family

ID=27526135

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7412538A NL7412538A (en) 1973-09-13 1974-09-23 Redn catalysts for removing nitrogen oxides from waste gases - contg metal components on a synthetic zeolite support

Country Status (1)

Country Link
NL (1) NL7412538A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0219854A2 (en) * 1985-10-22 1987-04-29 Norton Company Catalyst for reduction of nitrogen oxides
EP0234441A2 (en) * 1986-02-18 1987-09-02 Norton Company Catalyst for reduction of oxides of nitrogen

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0219854A2 (en) * 1985-10-22 1987-04-29 Norton Company Catalyst for reduction of nitrogen oxides
EP0219854A3 (en) * 1985-10-22 1988-11-02 Norton Company Catalyst for reduction of nitrogen oxides
EP0234441A2 (en) * 1986-02-18 1987-09-02 Norton Company Catalyst for reduction of oxides of nitrogen
EP0234441A3 (en) * 1986-02-18 1988-11-09 Norton Company Catalyst for reduction of oxides of nitrogen

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Legal Events

Date Code Title Description
BV The patent application has lapsed