Phosphotungstic acid supported catalyst and preparation method of methyl glycolate

The invention discloses a phosphotungstic acid supported catalyst and a preparation method of methyl glycolate, and the preparation method comprises the following steps: step a, adding an amino modifier into a carrier solution, filtering and drying to obtain an amino functionalized catalyst NH2-X, where X is the type of a carrier; b, a phosphotungstic acid solution is added into the solution of the catalyst NH2-X, evaporation drying is carried out, the phosphotungstic acid supported catalyst yHPW-NH2-X is obtained, and y is the loading capacity of phosphotungstic acid. According to the phosphotungstic acid supported catalyst and the preparation method of methyl glycolate provided by the invention,-NH2 is introduced into the carrier to functionalize the amino group of the carrier, and phosphotungstic acid is supported in the amino-functionalized carrier by using an impregnation method, so that a chemical bond is formed between the phosphotungstic acid and the carrier; the supported phosphotungstic acid catalys