Green synthesis method of methyl phosphorus dichloride
A green synthesis technology of methyl phosphorus dichloride, which is applied in chemical instruments and methods, compounds of group 5/15 elements of the periodic table, organic chemistry, etc., can solve the problem of difficult recycling of aluminum trichloride and large solvent consumption , complex solid waste and other issues, to achieve high yield, reduce separation steps, and protect the environment
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Embodiment 1
[0021] First, preheat methane to 200°C, then heat phosphorus trichloride and phosphorus pentachloride to form steam and fully mix with methane, methane and PCl 3 The feed ratio is 5:1, and the amount of phosphorus pentachloride accounts for PCl 3 5% of the percentage content, the mixed gas is uniformly passed into the tubular reactor, the reaction temperature is controlled at 450°C, the pressure is controlled at 0.5MPa, the residence time is 0.4s, the conversion rate of phosphorus trichloride is 45.0%, and the converted trichloride In terms of phosphorus chloride, the yield was 94.2%.
Embodiment 2
[0023] First preheat methane to 150°C, then heat phosphorus trichloride and phosphorus pentachloride into steam and fully mix with methane, methane and PCl 3 The feed ratio is 6:1, and the amount of phosphorus pentachloride accounts for PCl 3 3% of the percentage content, the mixed gas is uniformly passed into the tubular reactor, the reaction temperature is controlled at 430°C, the pressure is controlled at 0.3MPa, the residence time is 0.5s, the conversion rate of phosphorus trichloride is 49.7%, and the converted trichloride In terms of phosphorus chloride, the yield was 91.2%.
Embodiment 3
[0025] First preheat methane to 180°C, then heat phosphorus trichloride and phosphorus pentachloride to form steam and fully mix with methane, methane and PCl 3 The feed ratio is 7:1, and the amount of phosphorus pentachloride accounts for PCl 3 6% of the percentage content, the mixed gas is uniformly passed into the tubular reactor, the reaction temperature is controlled at 480 ° C, the pressure is controlled at 0.5 MPa, the residence time is 0.6s, the conversion rate of phosphorus trichloride is 41.4%, and the converted trichloride In terms of phosphorus chloride, the yield was 93.4%.
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