Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Metal – metal oxide or metal hydroxide
Patent
1995-05-31
1997-12-23
Wood, Elizabeth D.
Catalyst, solid sorbent, or support therefor: product or process
Catalyst or precursor therefor
Metal, metal oxide or metal hydroxide
503305, 503313, 503321, 568477, B01J 2325, B01J 2330, B01J 2331
Patent
active
057007527
ABSTRACT:
A catalyst for the production of unsaturated aldehyde and unsaturated carboxylic acid by the vapor-phase catalytic oxidation of at least one compound selected from the group consisting of propylene, isobutylene, t-butanol and methyl-t-butyl ether and a method for the production of unsaturated aldehyde and unsaturated carboxylic acid by the use of this catalyst are provided. The catalyst of this invention comprises (A) a catalyst having Mo, Bi and Fe as essential components and used for the production of unsaturated aldehyde and unsaturated carboxylic acid by vapor-phase catalytic oxidation of propylene, isobutylene, t-butanol and/or methyl-t-butyl ether and (B) a solid acid having acid strength (Ho) of not more than -11.93. Since this catalyst excels in catalytic activity and service life, it allows unsaturated aldehyde and unsaturated carboxylic acid to be produced stably at a high yield for a long time.
REFERENCES:
patent: 4918041 (1990-04-01), Hollstein et al.
patent: 5198581 (1993-03-01), Kawajiri et al.
European Search Report, EP 95 10 8273, Nov. 3, 1995.
Recent Progess in Solid Superacid, Applied Catalysis, 61 (1990) 1-25 no month.
Copy of Taiwanese Official Action and Applicants' response. Jun. 1995.
Aoki Yukio
Kawajiri Tatsuya
Kurimoto Ikuo
Onodera Hideo
Tanimoto Michio
Behr Esq. Omri M.
Ghyka Alexander G.
Nippon Shokubai Co. , Ltd.
Wood Elizabeth D.
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