Study of phosphotungstate photocatalytic degradation of methyl orange;

Supported ammonium phosphotungstate catalyst was prepared by sol-gel method and characterized by X-ray diffraction(XRD) and IR spectra,and catalytic activity of catalyst in nitration of benzene was tested.

The phenyl carboxylic acid was prepared from the oxidized phenyl methanol by the calalyzed hydrogen peroxide with the amine hexadecane trimethyl PW heteropoly acid used as the catalyst.