Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Metal – metal oxide or metal hydroxide
Patent
1985-12-23
1987-04-14
Shine, W. J.
Catalyst, solid sorbent, or support therefor: product or process
Catalyst or precursor therefor
Metal, metal oxide or metal hydroxide
502324, B01J 2310, B01J 2320, B01J 2334
Patent
active
046578862
ABSTRACT:
Compositions of matter, including: A mixture of at least one oxide of manganese and at least one oxide of a Lanthanum Series metal, preferably lanthanum or cerium, or at least one oxide of niobium. The above compositions are particularly useful as catalytic compositions for the conversion of C.sub.3 and C.sub.4 hydrocarbons to less saturated hydrocarbons, particularly ethylene and propylene and preferably ethylene. The life of the catalyst for the selective production of ethylene is extended by carrying out the reaction in the presence of steam. The steam substantially increases the active life of the catalytic composition, before regeneration is necessary, as well as significantly increasing the selectivity to ethylene. Limiting the amount of "bound" or "fixed" sulfur in the catalytic composition also improves the catalyst.
REFERENCES:
patent: 3867466 (1975-02-01), Endou et al.
patent: 4152300 (1979-05-01), Riesser
patent: 4290923 (1981-09-01), Mein et al.
patent: 4524236 (1985-06-01), McCain
Phillips Petroleum Company
Shine W. J.
Steininger C. F.
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