High Quality Phosphotungstic Acid Preparation Tips

In commerce, phosphotungstic acid is mainly used as catalyst in the homogeneous reaction of tetrahydrofuran to prepare polytetramethylenediol. Normally, the higher the acidity of the phosphotungstic acid catalyst used, the higher its activity, especially the phosphotungstic acid with Keggins structure is most recognized.

Generally, in the preparation of phosphotungstic acid catalysts, according to the preparation process of the catalysts, besides phosphotungstic acid with Keggins structure, there are also a large number of tungsten-containing impurities such as tungsten oxide and paratungstate. When such tungsten-containing impurities are abundantly present in phosphotungstic acid, the acidity of the catalyst is reduced and the activity of the catalyst is ultimately reduced. Therefore, it is very important to improve the purity of phosphotungstic acid.

In commerce, phosphotungstic acid is mainly used as catalyst in the homogeneous reaction of tetrahydrofuran to prepare polytetramethylenediol. Normally, the higher the acidity of the phosphotungstic acid catalyst used, the higher its activity, especially the phosphotungstic acid with Keggins structure is most recognized.

Generally, in the preparation of phosphotungstic acid catalysts, according to the preparation process of the catalysts, besides phosphotungstic acid with Keggins structure, there are also a large number of tungsten-containing impurities such as tungsten oxide and paratungstate. When such tungsten-containing impurities are abundantly present in phosphotungstic acid, the acidity of the catalyst is reduced and the activity of the catalyst is ultimately reduced. Therefore, it is very important to improve the purity of phosphotungstic acid.

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