FR2350133A1 - Catalytic redn. of nitrogen oxides in gas - using dehydrated alpha-goethite as catalyst for economy and high activity - Google Patents

Catalytic redn. of nitrogen oxides in gas - using dehydrated alpha-goethite as catalyst for economy and high activity

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Publication number
FR2350133A1
FR2350133A1 FR7613390A FR7613390A FR2350133A1 FR 2350133 A1 FR2350133 A1 FR 2350133A1 FR 7613390 A FR7613390 A FR 7613390A FR 7613390 A FR7613390 A FR 7613390A FR 2350133 A1 FR2350133 A1 FR 2350133A1
Authority
FR
France
Prior art keywords
gas
iii
goethite
alpha
redn
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.)
Granted
Application number
FR7613390A
Other languages
French (fr)
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FR2350133B1 (en
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Individual
Original Assignee
Individual
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Publication date
Application filed by Individual filed Critical Individual
Priority to FR7613390A priority Critical patent/FR2350133A1/en
Publication of FR2350133A1 publication Critical patent/FR2350133A1/en
Application granted granted Critical
Publication of FR2350133B1 publication Critical patent/FR2350133B1/fr
Granted legal-status Critical Current

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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
    • 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
    • B01J23/74—Iron group metals
    • B01J23/745—Iron

Abstract

In the treatment of gas contg. N oxide (I) by catalytic redn. with ammonia (II) or CO1 the catalyst used is Fe (III) oxide (III) obtd. by dehydration of alpha-goethite (alpha-FeOOH), pref. at 250-750, esp. 300-700 degrees C. The gas can also contain SOx. Used for the treatment of waste gases from engine exhausts, combustion furnaces, roasters, nitric acid mfr., metal surface treatment units etc. (III) has extremely high catalytic activity and is inexpensive. In an example, 97-99% removal of (I) from a gas was achieved by redn. with (II) over (III) dehydrated at 300-600 degrees C, at a treatment temp. of 300 degrees C.
FR7613390A 1976-05-05 1976-05-05 Catalytic redn. of nitrogen oxides in gas - using dehydrated alpha-goethite as catalyst for economy and high activity Granted FR2350133A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7613390A FR2350133A1 (en) 1976-05-05 1976-05-05 Catalytic redn. of nitrogen oxides in gas - using dehydrated alpha-goethite as catalyst for economy and high activity

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7613390A FR2350133A1 (en) 1976-05-05 1976-05-05 Catalytic redn. of nitrogen oxides in gas - using dehydrated alpha-goethite as catalyst for economy and high activity

Publications (2)

Publication Number Publication Date
FR2350133A1 true FR2350133A1 (en) 1977-12-02
FR2350133B1 FR2350133B1 (en) 1979-06-22

Family

ID=9172706

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7613390A Granted FR2350133A1 (en) 1976-05-05 1976-05-05 Catalytic redn. of nitrogen oxides in gas - using dehydrated alpha-goethite as catalyst for economy and high activity

Country Status (1)

Country Link
FR (1) FR2350133A1 (en)

Also Published As

Publication number Publication date
FR2350133B1 (en) 1979-06-22

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