Heteropolyacid catalysts

Details Heteropolyacid catalysts Heteropolyacid catalysts

B - Operations, Transporting

01

J

252/99, 260/482.

B01J 27/198 (2006.01) B01J 27/199 (2006.01) B01J 37/00 (2006.01) C07C 51/25 (2006.01) C07C 57/04 (2006.01)

Patent

CA 1316165

ABSTRACT OF THE DISCLOSURE 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°C to 400°C in the presence of oxygen. 710-12-15

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