Heteropolyacid catalyst and method for producing the same

Details Heteropolyacid catalyst and method for producing the same Heteropolyacid catalyst and method for producing the same

2006-08-22

2006-08-22

Lorengo, J. A. (Department: 1755)

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

Catalyst or precursor therefor

Phosphorus or compound containing same

C502S200000, C502S201000, C502S209000, C502S210000, C502S211000, C502S213000

Reexamination Certificate

active

07094727

ABSTRACT:
Provided is a novel heteropolyacid catalyst useful for partial oxidation of methacrolein (MACR) to methacrylic acid (MAA), as represented by the following formula 1:in-line-formulae description="In-line Formulae" end="lead"?PMoaAbBcCdDeEfOg  (1)in-line-formulae description="In-line Formulae" end="tail"?wherein A, B, C, D, E, a, b, c, d, e, f, and g are as defined in the specification. Provided is also a method for producing the heteropolyacid catalyst. The heteropolyacid catalyst produced by the method exhibits excellent catalyst activity in terms of conversion rate, selectivity, and yield.

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