Method for preparing butoxy methoxy methane
A technology of butoxymethoxymethane and dimethoxymethane, which is applied in the field of preparation of butoxymethoxymethane, achieves the effects of high product yield, simple process operation and mild reaction conditions
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Embodiment 1
[0034] Add 38g of dimethoxymethane, 37g of n-butanol and 3g of catalyst to a 180mL high pressure reactor. The catalysts are KAD302 (Beijing Kairui Environmental Protection), KC107 (Tianjin Yunkai), NKC-9 (Tianjin Bohong), DA -330 (Jiangsu Tehua), D009B (Dandong Pearl), Amberlyst-15 (Jiangsu Seco Saisi), D072H (Tianjin Yunkai). Use N 2 Replace the air in the kettle three times under the condition of 1.0MPa to make the remaining air content in the kettle less than 0.1%, and then pass in 2.0MPaN again 2 , Let it stand for 30 minutes for leak detection in the reactor to ensure that the device does not leak, and then empty the gas in the reactor. Under the condition of ensuring no air leakage, the heating and raising reaction was carried out, the stirring speed of the reactor was 500 rpm, the reaction pressure was 0.1 MPa, the reaction temperature was 70° C., and the reaction time was 4 hours. The reaction results are shown in Table 1.
[0035] Table 1. The influence of different resi...
Embodiment 2
[0039] Under normal pressure and 70℃, add the raw materials dimethoxymethane and n-butyl with molar ratios of 1:3, 1:2, 2:1, 3:1, 4:1, 5:1 into a 180mL autoclave Alcohol and 3g NKC-9 catalyst (wherein the mass of n-butanol is 37g), use N at room temperature 2 Replace the air in the kettle three times under the condition of 1.0MPa to make the remaining air content in the kettle less than 0.1%, and then pass in 2.0MPaN again 2 , Let it stand for 30 minutes for leak detection in the reactor to ensure that the device does not leak, and then empty the gas in the reactor. Under the condition of ensuring no air leakage, heating is performed under normal pressure, the stirring speed of the reactor is 500 rpm, and the reaction time is 4 hours. The effects of different raw material ratios on the reaction activity and product selectivity are shown in Table 2.
[0040] Table 2. The influence of different raw material ratios on reaction activity and product selectivity
[0041]
[0042] It can ...
Embodiment 3
[0044] Add 38g of dimethoxymethane, 37g of n-butanol, 3g of NKC-9 catalyst into a 180mL autoclave, and use N at room temperature 2 Replace the air in the kettle three times under the condition of 1.0MPa to make the remaining air content in the kettle less than 0.1%, and then pass in 2.0MPaN again 2 , Let it stand for 30 minutes for leak detection in the reactor to ensure that the device does not leak, and then empty the gas in the reactor. Under the condition of ensuring no air leakage, heat up, the stirring speed of the reactor is 500 rpm, the reaction time is 4 hours, the reaction pressure is 0.1 MPa, and the reaction temperature is 25, 40, 60, 80, 100, 120, 130, Table 3 shows the reaction results under different reaction temperature conditions at 140, 150 and 160°C.
[0045] Table 3. The effect of NKC-9 catalyst on the reaction activity and product selectivity under different reaction temperature conditions
[0046]
[0047] It can be seen from Table 3 that when NKC-9 is used as...
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