Products

Heteropoly Acids

Heteropoly acids are condensed products which consist of inorganic oxyacids of phosphorus, silicon, etc. and that of tungsten, Molybdeum and Vanadium, etc. They are crystals which have keggin structure and strong acidity and oxydation power. Japan New Metals can provide a wide range of high-purity heteropoly acids with stable quality by newly developed manufacturing system comprising effecient mass production facilities and superior qualitycontrol management.

藤原工業団地
Application

Heteropoly acids are widely used for materials of catalysts in the chemical industry. They show strong acidity in both condition of solid and liquid. For example, the concentrated solutions of them have higher aicidity than perchloric acid (HClO4) or sulfuric acid (H2SO4).
Tungstic heteropoly acids are more advantageous to acid catalysts. In homogeneous reaction these catalysts are applicable to hydration, transetherification and polymerization. Moreover they are used for dehydration, etherification and esterification as solid heterogeneous catalyzed reaction.
Molybdic heteropoly acids and Mo-based heteropoly acids coordinate bonded with vanadium or tungsten have not only strong acidity but stong oxidation power, are the common catalysts for oxidative reaction.
These solid acid catalysts are typically applied to the manufacturing of methacrylic acid by gas phase oxidation of methacrolein.


Phospho Tungstic Acid

H3[PW12O40]・nH2O(n≒30)
Mark Chemical Composition(%)
ppm
WO3 P Na NH4 Fe Cl SO4 NO3 Heavy Metal
PW12 ≧80.0 ≧0.87 ≦20 ≦20 ≦10 ≦10 ≦10 ≦10 ≦10

Silico Tungstic Acid

H4[SiW12O40]・nH2O(n≒30)
Mark Chemical Composition(%)
% ppm
WO3 Si Na NH4 Fe Cl SO4 NO3 Heavy Metal
SiW12 ≧79.0 ≧0.80 ≦20 ≦20 ≦10 ≦10 ≦10 ≦10 ≦10

Phospho Molybdic Acid

H3[PMo12O40]・nH2O(n≒30)
Mark Chemical Composition(%)
ppm
MoO3 P Na NH4 Fe Cl SO4 NO3 Heavy Metal
PMo12 ≧72.0 ≧1.29 ≦20 ≦20 ≦10 ≦10 ≦20 ≦10 ≦10

Sodium Phospho Molybdate

Na3[PMo12O40]・nH2O(n≒30)
Mark Chemical Composition(%)
ppm
MoO3 P Na NH4 Fe Cl SO4 NO3 Heavy Metal
NaPMo12 ≧71.0 ≧1.25 2.0~3.5 ≦20 ≦30 ≦20 ≦50 ≦50 ≦20

Phospho Tungsto-Molybdic Acid

H3[PW12-XMoxO40]・nH2O(0<X<12,n≒30)
Mark Element ppm
ppm
Na NH4 Fe Cl SO4 NO3 Heavy Metal
PW12-X Mox ≦20 ≦20 ≦10 ≦10 ≦20 ≦10 ≦10

Phospho Vanado-Molybdic Acid

H15-X[PV12-X MoxO40]・nH2O(6<X<12,n≒30)
Mark Element ppm
ppm
Na NH4 Fe Cl SO4 NO3 Heavy Metal
PV12-x Mox ≦20 ≦20 ≦10 ≦10 ≦20 ≦10 ≦10
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