Synthesis method of polyformaldehyde dimethyl ether
A technology of polyoxymethylene dimethyl ether and synthesis method, which is applied in chemical instruments and methods, preparation of organic compounds, organic chemistry, etc., can solve the problems of high price and high production cost, and achieve low production cost, good yield and high The effect of reaction conversion
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[0012] [Example 1]
[0013] Add 2g of catalyst Cl in a 300ml tank reactor - / TiO 2 , 100ml of methanol and 100g of paraformaldehyde, reacted at 130℃ and 0.8MPa autogenous pressure for 4h, and the sample was centrifuged and analyzed by gas chromatography. The product contains polyoxymethylene dimethyl ether and unreacted raw materials methanol and paraformaldehyde, and its composition distribution is shown in Table 1.
Example Embodiment
[0014] [Example 2]
[0015] Add 2 g of catalyst SO to a 300 ml tank reactor 4 2- / Fe 2 O 3 , 100 ml of methanol and 100 g of paraformaldehyde, reacted at 130°C and 0.6 MPa autogenous pressure for 4 hours, and the sample was centrifuged and analyzed by gas chromatography. The product contains polyoxymethylene dimethyl ether and unreacted raw materials methanol and paraformaldehyde, and its composition distribution is shown in Table 1.
Example Embodiment
[0016] [Example 3]
[0017] Add 2 g of catalyst SO to a 300 ml tank reactor 4 2- / Fe 2 O 3 , 100 ml of methylal and 100 g of paraformaldehyde, reacted at 130°C and 0.6 MPa autogenous pressure for 4 hours, and the sample was centrifuged and analyzed by gas chromatography. The product contains polyoxymethylene dimethyl ether and unreacted raw materials methylal and paraformaldehyde, and its composition distribution is shown in Table 1.
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