Heteropoly-acids, and their production and use

Details Heteropoly-acids, and their production and use Heteropoly-acids, and their production and use

C - Chemistry, Metallurgy

01

B

23/62, 260/521.1

C01B 25/00 (2006.01) B01J 27/19 (2006.01) B01J 27/199 (2006.01) C01B 25/16 (2006.01) C07C 51/25 (2006.01) C07C 57/055 (2006.01)

Patent

CA 1197066

ABSTRACT HETEROPOLY-ACIDS, AND THEIR PRODUCTION AND USE A heteropoly-acid of the formula: H3+x(PMo12-xVxO40).nH2O wherein x and n are numbers satisfying respectively the equations: 0A?xA?3 and nA?6, and comprising phosphorus as the central atom and molybdenum or molybdenum and vanadium as the coordinating atoms, or its reduction-form product, which is in a cubic crystal structure having diffraction lines at lattice spacings (d) of at least 8.4, 6.8, 5.9 4.8, 4.2 and 3.4 in the X-ray powder diffraction. Such heteropoly-acids are useful as catalysts.

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