SU126971A1 - The method of obtaining cadmium selenide - Google Patents
The method of obtaining cadmium selenideInfo
- Publication number
- SU126971A1 SU126971A1 SU628373A SU628373A SU126971A1 SU 126971 A1 SU126971 A1 SU 126971A1 SU 628373 A SU628373 A SU 628373A SU 628373 A SU628373 A SU 628373A SU 126971 A1 SU126971 A1 SU 126971A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- cadmium
- cadmium selenide
- hydrogen
- obtaining cadmium
- obtaining
- Prior art date
Links
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- Photoreceptors In Electrophotography (AREA)
Description
Описываемый способ получени се,1енида кадми в отличие от известных не св зан с применением токсичного селенистого водорода п позвол ет получить свободный от окисных соединений селенид кадми в виде мелкокристаллического порошка с высокой степенью чистоты.The described method for the preparation of ce, 1nida cadmium, in contrast to the known ones, is not associated with the use of toxic selenous hydrogen and allows to obtain cadmium selenide free from oxide compounds in the form of a fine-crystalline powder with a high degree of purity.
Особенность способа состоит в том, что селенистокислый кадмий восстанавливают водородом.The peculiarity of the method is that cadmium selenite is reduced by hydrogen.
Способ осуществл ют следующим образом. Исходное сырье (растворы солей кадми и селепистого ангидрида) очищают известными .ieтoдами от содержащихс в нем микропримесей т желых металло) (Ре, N, Со, Си, РЬ). Взаимодействием, например, водной взвеси CdCOs с раствором селенистой кислоты (или взаимодействием сульфата кадми с селенистокислой солью щелочного металла или аммони ) получают безводный селенистокисчый кадмий.The method is carried out as follows. The initial raw materials (solutions of cadmium salts and seleptive anhydride) are purified by known .eethodes from trace metals contained in it) (Pe, N, Co, Cu, Pb). The interaction, for example, aqueous suspension of CdCOs with a solution of selenous acid (or by the interaction of cadmium sulfate with an alkali metal selenite acid salt or ammonium), gives anhydrous selenistocide cadmium.
Селенистокислый кадмий восстанавливают (прокаливают) водородом в кварцевой лодочке в трубчатой печи при 400-500°. При восстановлении , например, 20 г CdSeOs водородом со скоростью его тока 10 , процесс заканчиваетс в течение 2 час. при 500°. Полученный продукт содержит 59,3% Cd и 40,5% Se (теоретически-58,73%Cd и 41,2/% Se) и в качестве микропримеси не более 1.10-% Fe.Selenite cadmium is reduced (calcined) with hydrogen in a quartz boat in a tube furnace at 400–500 °. When, for example, 20 g of CdSeOs is reduced with hydrogen at a rate of 10, the process ends within 2 hours. at 500 °. The resulting product contains 59.3% Cd and 40.5% Se (theoretically 58.73% Cd and 41.2 /% Se) and not more than 1.10-% Fe as a trace impurity.
При получении селенида кадми в больщих количествах восстановление целесообразно проводить в два ириема. После первого прокаливани продукт перемешивают, а затем осуществл ют повторное прокаливание (восстановление).Upon receipt of cadmium selenide in large quantities, the reduction is advisable to carry out in two ways. After the first calcination, the product is stirred, and then the second calcination (reduction) is carried out.
Предмет изобретени Subject invention
Способ получени селенида кадми , отличающийс тем, что, с целью получени мелкокристаллического порошка, селенистокислый кадмий восстанавливают водородом.The method of obtaining cadmium selenide, characterized in that, in order to obtain a fine-crystalline powder, cadmium selenite is reduced by hydrogen.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU628373A SU126971A1 (en) | 1959-05-18 | 1959-05-18 | The method of obtaining cadmium selenide |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU628373A SU126971A1 (en) | 1959-05-18 | 1959-05-18 | The method of obtaining cadmium selenide |
Publications (1)
Publication Number | Publication Date |
---|---|
SU126971A1 true SU126971A1 (en) | 1959-11-30 |
Family
ID=48398234
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU628373A SU126971A1 (en) | 1959-05-18 | 1959-05-18 | The method of obtaining cadmium selenide |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU126971A1 (en) |
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1959
- 1959-05-18 SU SU628373A patent/SU126971A1/en active
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