SU430065A1 - METHOD OF OBTAINING NIOBIUM DIOXIDE - Google Patents
METHOD OF OBTAINING NIOBIUM DIOXIDEInfo
- Publication number
- SU430065A1 SU430065A1 SU1807355A SU1807355A SU430065A1 SU 430065 A1 SU430065 A1 SU 430065A1 SU 1807355 A SU1807355 A SU 1807355A SU 1807355 A SU1807355 A SU 1807355A SU 430065 A1 SU430065 A1 SU 430065A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- niobium dioxide
- niobium
- electrolysis
- dioxide
- cathode
- Prior art date
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- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
Description
1one
Изобретение относитс к области получени соединений ниоби , в частности диоксида ниоби .This invention relates to the field of producing niobium compounds, in particular niobium dioxide.
Известен способ получени диоксида ниоби восстановлением водородом при 900- 1100°С в течепие 5-8 час. Однако этот способ трудоемок и длителен.A known method of producing niobium dioxide by reduction with hydrogen at 900-1100 ° C in a flow of 5-8 hours. However, this method is laborious and time consuming.
С целью иг1теисификации процесса получени диоксида ниоби предлагают способ, по которому гемипептаоксид ниоби раствор ют в расплавленной системе и затем подвергают электролизу при температуре 900-950°С и катодной плотности тока 0,7- 1,9 aicM. Электролиз длитс 1 -1,5 час.In order to simulate the process of producing niobium dioxide, they propose a method by which niobium hemipepoxide is dissolved in a molten system and then subjected to electrolysis at a temperature of 900-950 ° C and a cathode current density of 0.7-1.99 aicM. Electrolysis lasts 1 -1.5 hours.
Чистота получеиного предлагаемым способом диоксида ниоби 99,8%; выход по току 78,5%. The purity of the proposed method of niobium dioxide of 99.8%; current output 78.5%.
Пример. В расплавленной системе Li4P2O7 (30 вес. %) - LiF (70 вес. %) при 900°С раствор ют в течеипе нескольких минут 20 вес. % Nb2O5. Электролиз ведут нри катодиой плотности тока 0,7-1,9 alcM и напр жении на клеммах ванны 2,0-3,5 в при 900-Example. In the molten system, Li4P2O7 (30 wt.%) - LiF (70 wt.%) At 900 ° C is dissolved in a few minutes for 20 wt. % Nb2O5. Electrolysis is carried out at a cathodio current density of 0.7-1.9 alcM and a voltage at the bath terminals of 2.0-3.5 in at 900-
950°С. Катодом служит молибденовый стержень , анодом - графитова ванна. Кристаллический диоксид ниоби (часто в виде дендритов ) выдел етс на катоде, образу грушевидной формы осадок, прочно сцеплениый с катодом. Электролиз длитс I -1,5 час. По окончании электролиза катод вместе с осадком NbO2 извлекают из ванны и обрабатывают гор чей дистиллированной водой. Пос.ле950 ° C. The cathode is a molybdenum rod, the anode is a graphite bath. Crystalline niobium dioxide (often in the form of dendrites) is released at the cathode, forming a pear-shaped precipitate firmly adhering to the cathode. Electrolysis lasts I -1.5 hours. At the end of the electrolysis, the cathode, together with the NbO2 precipitate, is removed from the bath and treated with hot distilled water. After
этого ХЬО2 промывают спиртом и сушат.This CHO2 is washed with alcohol and dried.
Чистота получеиного диоксида ниоби 99,8%; выход по току 78,5%.Purity of 99.8% niobium dioxide; current output 78.5%.
Предмет и з о б р е г е п ипSubject and use of the article
1515
Сиособ получени диокси.да ниоби путем термической обработки гемипентаоксида ниоби (Nb2O5) газом, отличающийс тем, что, с целью интенсификацпи процесса, гемипептаоксид ниоби раствор ют в расплавленной системе Li4P2O7-LiF и затем подвергают электролизу в атмосфере аргона при 900-950°С и катодной плотиости тока 0,7-1,9 а/см.A method for producing dioxy. Niobium by thermally treating niobium hemipentoxide (Nb2O5) with gas, characterized in that, in order to intensify the process, niobium hemipepoxide is dissolved in the molten Li4P2O7-LiF system and then subjected to electrolysis in an argon atmosphere at 900–950 ° C and cathode current density of 0.7-1.9 a / cm.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU1807355A SU430065A1 (en) | 1972-07-03 | 1972-07-03 | METHOD OF OBTAINING NIOBIUM DIOXIDE |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU1807355A SU430065A1 (en) | 1972-07-03 | 1972-07-03 | METHOD OF OBTAINING NIOBIUM DIOXIDE |
Publications (1)
Publication Number | Publication Date |
---|---|
SU430065A1 true SU430065A1 (en) | 1974-05-30 |
Family
ID=20520962
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU1807355A SU430065A1 (en) | 1972-07-03 | 1972-07-03 | METHOD OF OBTAINING NIOBIUM DIOXIDE |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU430065A1 (en) |
-
1972
- 1972-07-03 SU SU1807355A patent/SU430065A1/en active
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