Catalyst for use in a methacrylic acid process

Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Phosphorus or compound containing same

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502205, 502206, 502210, 502212, B01J 2714, B01J 2102

Patent

active

045309167

ABSTRACT:
A catalyst having heteropoly-acid structure and the general formula:

REFERENCES:
patent: 3875220 (1975-04-01), White et al.
patent: 4001316 (1977-01-01), Ishimi
patent: 4172051 (1979-10-01), Matsumoto et al.
patent: 4178464 (1979-12-01), Sakamoto et al.
patent: 4180678 (1979-12-01), Wada et al.
patent: 4273676 (1981-06-01), Matsumoto et al.
patent: 4444907 (1984-04-01), Ohdan et al.
Inorganic Chemistry, vol. 7, No. 3, Mar. 1968, pp. 437-441.

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