Title:
METHOD FOR PURIFYING EXHAUST GAS
Document Type and Number:
Japanese Patent JPH04284824
Kind Code:
A
Abstract:
PURPOSE: To remove NOx in exhaust gas in an oxygen excessive state using NOx purifying catalyst having high NOx purifying activity in an operation temperature range of 300-500°C and having high durability in an oxygen excessive atmosphere.
CONSTITUTION: Catalyst for purifying exhaust gas wherein Pt an Sr are carried on alumina carriers is placed in an exhaust gas in an oxygen exceesive state to remove NOx in exhaust gas at high purifying effiency over a wide range of temperature.
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Inventors:
IRIYAMA YOJIRO
ISHIBASHI KAZUNOBU
ISHIBASHI KAZUNOBU
Application Number:
JP4972591A
Publication Date:
October 09, 1992
Filing Date:
March 14, 1991
Export Citation:
Assignee:
TOYOTA MOTOR CORP
International Classes:
B01D53/94; B01J23/58; F01N3/28; (IPC1-7): B01D53/36; B01J23/58; F01N3/28
Attorney, Agent or Firm:
Aoki Akira (3 outside)