Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Metal – metal oxide or metal hydroxide
Patent
1988-06-02
1990-10-30
Pak, Chung K.
Catalyst, solid sorbent, or support therefor: product or process
Catalyst or precursor therefor
Metal, metal oxide or metal hydroxide
502324, 502338, 502345, 502350, B01J 2328, B01J 2330, B01J 2370, B01J 2334
Patent
active
049668820
ABSTRACT:
A catalyst for denitration by catalytic reduction using ammonia capable of preventing catalyst deterioation due to vapors of heavy metal compounds contained in exhaust gases and having a high strength and a superior resistance to poisons and a process for producing the catalyst are provided, which catalyst comprises TiO.sub.2, oxide(s) of at least one of V, Cu, Fe and Mn and oxide(s) of at least one of Mo, W and Sn, the total of the mol number(s) of the oxide(s) of at least one of Mo, W and Sn falling within a range of 2.times.10.sup.-6 to 20.times.10.sup.-6 mol/m.sup.2 per the unit specific surface of the catalyst, and which process comprises having oxide(s) of at least one of Mo, W and Sn absorbed and supported onto a composition comprising TiO.sub.2 prepared in advance and oxide(s) of at least one of V, Fe, Cu and Mn so as to give the above-specified total of the mol number(s) of oxide(s) of at least one of Mo, W and Sn.
REFERENCES:
patent: 4085193 (1978-04-01), Nakajima et al.
patent: 4466947 (1984-08-01), Imanari et al.
patent: 4833113 (1989-05-01), Imanari et al.
Akama Hiroshi
Kato Yasuyoshi
Konishi Kunihiko
Matsuda Toshiaki
Teshima Nobue
Babcock-Hitachi Kabushiki Kaisha
Pak Chung K.
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