Survey and development of phosphotungstic acid in synthesis of esters and acetals(ketals)

In this paper,survey and development of phosphotungstic acid and phosphotungstic acid supported on active carbon and TiO_2 catalysts in synthesis of esters and acetals (ketals) was introduced.These results show that phosphotungstic acid supported on active carbon and TiO_2 catalysts is an excellent catalyst to synthesize esters and acetals (ketals).