JPS5584540A - Catalyst for removing nitrogen oxide - Google Patents

Catalyst for removing nitrogen oxide

Info

Publication number
JPS5584540A
JPS5584540A JP15968878A JP15968878A JPS5584540A JP S5584540 A JPS5584540 A JP S5584540A JP 15968878 A JP15968878 A JP 15968878A JP 15968878 A JP15968878 A JP 15968878A JP S5584540 A JPS5584540 A JP S5584540A
Authority
JP
Japan
Prior art keywords
catalyst
nitrogen oxide
oxide
alkali
molar ratio
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.)
Pending
Application number
JP15968878A
Other languages
Japanese (ja)
Inventor
Terumi Oda
Ryohei Minami
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.)
Nippon Steel Corp
Original Assignee
Sumitomo Metal Industries Ltd
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 Sumitomo Metal Industries Ltd filed Critical Sumitomo Metal Industries Ltd
Priority to JP15968878A priority Critical patent/JPS5584540A/en
Publication of JPS5584540A publication Critical patent/JPS5584540A/en
Pending legal-status Critical Current

Links

Landscapes

  • Exhaust Gas Treatment By Means Of Catalyst (AREA)
  • Catalysts (AREA)

Abstract

PURPOSE:To provide an economical catalyst effective at a low temperature as catalyst for removing nitrogen oxide by a method wherein a specific molar ratio of aq. ferrous and ferric salts solution is treated with alkali to prepare iron based oxide. CONSTITUTION:Alkali such as sodium hydroxide is added to an aq. solution which contains ferrous and ferric salts in molar ratio Fe<3+>/Fe<2+> of 0.2-3. Then, black iron based oxide precipitates at pH8-12. The precipitate, after filtered and washed, is heated at 300-400 deg.C and dried. The resulted oxide essentially consists of magnetite and has a relative surface area about 40m<2>/g or more. The product is active at a low catalytic temperature and functions as an inexpensive nitrogen oxide removing catalyst.
JP15968878A 1978-12-21 1978-12-21 Catalyst for removing nitrogen oxide Pending JPS5584540A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15968878A JPS5584540A (en) 1978-12-21 1978-12-21 Catalyst for removing nitrogen oxide

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15968878A JPS5584540A (en) 1978-12-21 1978-12-21 Catalyst for removing nitrogen oxide

Publications (1)

Publication Number Publication Date
JPS5584540A true JPS5584540A (en) 1980-06-25

Family

ID=15699138

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15968878A Pending JPS5584540A (en) 1978-12-21 1978-12-21 Catalyst for removing nitrogen oxide

Country Status (1)

Country Link
JP (1) JPS5584540A (en)

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