Method for making heteropolyacid catalysts and catalysts made by

Details Method for making heteropolyacid catalysts and catalysts made by Method for making heteropolyacid catalysts and catalysts made by

1990-02-12

1990-10-30

Shine, W. J.

Catalyst, solid sorbent, or support therefor: product or process

Catalyst or precursor therefor

Phosphorus or compound containing same

B01J 2716, B01J 2719, B01J 27199

Patent

active

049668773

ABSTRACT:
Catalysts having an improved long-term activity behavior in the oxydehydrogenation of, for example, isobutyric acid to methacrylic acid, are prepared from heteropolyacids of molybdenum or from their metal salt derivatives by the concurrent use of a water soluble organic compound which is of low volatility or is practically non-volatile, such as a polymer, followed by calcination of the preparation at 200.degree. C. to 400.degree. C. in the presence of oxygen.

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patent: 4499202 (1985-02-01), Arias et al.
patent: 4522934 (1985-06-01), Shum et al.
patent: 4530916 (1985-07-01), Matsumoto et al.
patent: 4632914 (1986-12-01), Arias et al.
patent: 4670132 (1987-06-01), Arias et al.
Inorg. Chem. 7 (1968) 437-441.
Ullmann's Encyclopaedie der technischen Chemie, 4th Edn, vol. 13, pp. 563-564.

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