Method for preparing indium oxide for organic light emitting diode
A technology of light-emitting diodes and indium oxide, which is applied in chemical instruments and methods, inorganic chemistry, gallium/indium/thallium compounds, etc., can solve the problems of easily polluted environment, a large amount of waste acid and waste alkali, etc., and achieves high purity and uniform particle size. , the effect of low impurity content
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example 1
[0026] Add 1000 grams of refined indium with a purity of 99.995% and 1 gram of ammonium sulfate catalyst, then add 5 kg of pure water, raise the temperature to 270 degrees Celsius in the reaction kettle, and press 4 MPa to make the water in a critical state; stir for 30 minutes to obtain indium hydroxide, Indium oxide is obtained by calcining indium hydroxide in a calciner at 450°C.
example 2
[0028] Add 2000 grams of refined indium with a purity of 99.995%, add 2 grams of catalyst ammonium sulfate, and then add 10 kg of pure water, raise the temperature to 300 degrees Celsius in the reactor, and the pressure is 8 MPa, and stir for 30 minutes to obtain indium hydroxide. Calcination at 550 degrees Celsius Obtain indium oxide after middle calcining, all the other are with example 1.
example 3
[0030] Add 4000 grams of refined indium with a purity of 99.995% and 4 grams of catalyst ammonium sulfate, then add 20 kg of pure water, heat up to 370 degrees Celsius in the reaction kettle, press 20 MPa, and stir for 30 minutes to obtain indium hydroxide. Calcination at 650 degrees Celsius Obtain indium oxide after middle calcining, all the other are with example 1.
[0031] Origin of refined indium: the company produces it itself and refines it from crude indium.
[0032] Ammonium Sulfate Origin: Produced by Shanghai Sinopharm Group, super pure.
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