Trimethylindium low-temperature purification device and low-temperature purification method
A technology of trimethyl indium and a purification method, which is applied in the field of low temperature purification devices of trimethyl indium, can solve the problems that the safety and stability of the purification process are difficult to control, the equipment cost is large, and the equipment requirements are high, and the equipment cost is low. , The effect of low equipment requirements and simple operation
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Embodiment 1
[0037] The method for the low-temperature purification of trimethylindium comprises the steps:
[0038] (1) Put the purified raw material kettle 1 and the receiving tank 6 in an inert gas glove box, put 500 grams of 99% pure trimethylindium material into the purified raw material kettle 1, and seal the purified raw material kettle 1, Inject liquid nitrogen into the Dewar tank 12;
[0039](2) The cooling medium inlet 81 and the cooling medium outlet 82 of the condensing device 8 are connected to the external cooling equipment, and according to the indication of the thermometer 7 in the receiving tank, the temperature in the receiving tank 6 is controlled at -20 by the condensing device 8 ℃;
[0040] (3) open the vacuum pump 13, vacuumize the purified raw material still 1, and according to the indication of the pressure gauge 3, control the pressure in the purified raw material still 1 to be 30torr;
[0041] (4) The low-temperature heating device carries out low-temperature he...
Embodiment 2
[0043] The method for the low-temperature purification of trimethylindium comprises the steps:
[0044] (1) Place the purified raw material kettle 1 and the receiving tank 6 in an inert gas glove box, put 600 grams of 99% pure trimethylindium material into the purified raw material kettle 1, and seal the purified raw material kettle 1, Inject liquid nitrogen into the Dewar tank 12;
[0045] (2) The cooling medium inlet 81 and the cooling medium outlet 82 of the condensing device 8 are connected to the external cooling equipment, and according to the indication of the thermometer 7 in the receiving tank, the temperature in the receiving tank 6 is controlled at -10 by the condensing device 8 ℃;
[0046] (3) open the vacuum pump 13, vacuumize the purified raw material still 1, and according to the indication of the pressure gauge 3, control the pressure in the purified raw material still 1 to be 40torr;
[0047] (4) The low-temperature heating device carries out low-temperature...
Embodiment 3
[0049] The method for the low-temperature purification of trimethylindium comprises the steps:
[0050] (1) Place the purified raw material kettle 1 and the receiving tank 6 in an inert gas glove box, put 700 grams of solid trimethylindium material with a purity of 99% into the purified raw material kettle 1, and seal the purified raw material kettle 1, Inject liquid nitrogen into the Dewar tank 12;
[0051] (2) The cooling medium inlet 81 and the cooling medium outlet 82 of the condensing device 8 are connected to the external cooling equipment, and according to the indication of the thermometer 7 in the receiving tank, the temperature in the receiving tank 6 is controlled at 10°C by the condensing device 8 ;
[0052] (3) open the vacuum pump 13, vacuumize the purified raw material still 1, and according to the indication of the pressure gauge 3, control the pressure in the purified raw material still 1 to be 45torr;
[0053] (4) The low-temperature heating device carries o...
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