Chemistry of inorganic compounds – Modifying or removing component of normally gaseous mixture – Nitrogen or nitrogenous component
Patent
1981-08-24
1983-03-29
Vertiz, O. R.
Chemistry of inorganic compounds
Modifying or removing component of normally gaseous mixture
Nitrogen or nitrogenous component
252461, 252464, 252469, 252472, B01J 800, C01B 2100
Patent
active
043783384
ABSTRACT:
The present invention provides a catalyst composition and a process for reducing and removing nitrogen oxides with ammonia in the presence of molecular oxygen, said catalyst composition comprising at least three components of titanium, vanadium and magnesium and optionally tungsten, the titanium and tungsten being contained as oxides and the vanadium and magnesium being contained as oxides and/or sulfates. This catalyst composition is characterized by magnesium being substituted for all or part of expensive tungsten and has advantages of high activity with improved catalyst life and heat resistance.
REFERENCES:
patent: 4036785 (1977-07-01), Saitoh et al.
patent: 4085193 (1978-04-01), Nakayima et al.
patent: 4221768 (1980-09-01), Inoue
Imanari Makoto
Oshida Bunji
Heller Gregory A.
Mitsubishi Petrochemical Co. Ltd.
Vertiz O. R.
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