SU1159886A1 - Method of separating rare-earth elements - Google Patents
Method of separating rare-earth elements Download PDFInfo
- Publication number
- SU1159886A1 SU1159886A1 SU833603329A SU3603329A SU1159886A1 SU 1159886 A1 SU1159886 A1 SU 1159886A1 SU 833603329 A SU833603329 A SU 833603329A SU 3603329 A SU3603329 A SU 3603329A SU 1159886 A1 SU1159886 A1 SU 1159886A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- earth elements
- rare
- separation
- solution
- acetylacetonates
- Prior art date
Links
- 229910052761 rare earth metal Inorganic materials 0.000 title claims abstract description 19
- 238000000034 method Methods 0.000 title claims abstract description 7
- 238000000926 separation method Methods 0.000 claims abstract description 11
- POILWHVDKZOXJZ-ARJAWSKDSA-M (z)-4-oxopent-2-en-2-olate Chemical compound C\C([O-])=C\C(C)=O POILWHVDKZOXJZ-ARJAWSKDSA-M 0.000 claims abstract description 8
- YRKCREAYFQTBPV-UHFFFAOYSA-N acetylacetone Chemical compound CC(=O)CC(C)=O YRKCREAYFQTBPV-UHFFFAOYSA-N 0.000 claims abstract description 8
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 claims abstract description 7
- 125000005595 acetylacetonate group Chemical group 0.000 claims abstract description 7
- 238000001556 precipitation Methods 0.000 claims abstract description 4
- 230000018044 dehydration Effects 0.000 claims abstract description 3
- 238000006297 dehydration reaction Methods 0.000 claims abstract description 3
- 238000000859 sublimation Methods 0.000 claims abstract 2
- 230000008022 sublimation Effects 0.000 claims abstract 2
- 239000002244 precipitate Substances 0.000 claims description 3
- 150000003839 salts Chemical class 0.000 claims description 3
- 230000008021 deposition Effects 0.000 claims 1
- -1 rare-earth salts Chemical class 0.000 abstract 1
- 239000000243 solution Substances 0.000 description 6
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- 229910052684 Cerium Inorganic materials 0.000 description 2
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 description 2
- 229910052727 yttrium Inorganic materials 0.000 description 2
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 description 2
- 208000005156 Dehydration Diseases 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F17/00—Compounds of rare earth metals
- C01F17/30—Compounds containing rare earth metals and at least one element other than a rare earth metal, oxygen or hydrogen, e.g. La4S3Br6
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Inorganic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
СПОСОБ РАЗДЕЛЕНИЯ РЕДКОЗЕМЕЛЬНЫХ ЭЛЕМЕНТОВ, включающий осалсдение ацетилацетонатов из растворов соЛей редкоземельных элементов раствором ацетилацетоната аммони , отделение осадка ацетилацетонатов и их сублимацию в вакууме 1010 мм рт.ст. при нагревании, о тличающийс тем, что, с целью повьшени степени разделени редкоземельных элементов и упрощени процесса за счет устранени стадий дегидрататщи и тока паров ацетилацетона соответственно, осаждение ведут из раствора солей редкоземельных элементов концентрацией О,1-2 мол/л- раствором ацетилацетоната аммони концентрацией 5-6,4 мол/л.A METHOD FOR SEPARATION OF RARE-EARTH ELEMENTS, including the removal of acetylacetonates from solutions of rare-earth elements with a solution of ammonium acetylacetonate, the separation of the residue of acetylacetonates and their sublimation in a vacuum of 1010 mm Hg. when heated, in order to improve the degree of separation of rare-earth elements and simplify the process by eliminating the dehydration stages and the current of acetylacetone vapors, respectively, precipitation is carried out from a solution of rare-earth salts with a concentration of O, 1-2 mol / l ammonium acetylacetonate solution concentration of 5-6.4 mol / l.
Description
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Изобретение относитс к способам разделени редкоземельных элементов (РЗЭ) и может быть использовано дл разделени смесей РЗЭ на цериеву и иттриевую подгруппы, а также дл очистки легкиу РЗЭ от примесей т желых .The invention relates to methods for the separation of rare earth elements (REE) and can be used to separate mixtures of REEs into cerium and yttrium subgroups, as well as to clean light REEs from heavy impurities.
Цель изобретени - повышение степени разделени РЗЭ и упрощение процесса за счет устранени стадии дегидратации и тока паров ацетилацетона .The purpose of the invention is to increase the degree of separation of REE and simplify the process by eliminating the dehydration stage and the current of acetylacetone vapor.
Пример. Дл Приготовлени водного раствора ацетилацетоната аммони к 9 мл ацетилацетона добавл ют 6 мд 29%-ного аммиака и перемешивают до полного растворени выпавшего осадка.Example. To prepare an aqueous solution of ammonium acetylacetonate, 6 ppm of 29% ammonia is added to 9 ml of acetylacetone and stirred until the precipitate has completely dissolved.
Осаждение ацетилацетонатов РЗЭ провод т при комнатной температуре добавлением к раствору двух солей РЗЭ эквимол рной концентрации раствора ацетилацетоната Аммони . Осадок отдел ют фильтрованием и высушивают на воздухе.The precipitation of REE acetylacetonates is carried out at room temperature by adding to the solution of two salts of REE an equimolar concentration of the ammonium acetylacetonate solution. The precipitate is filtered off and air dried.
Сухой препарат нагревают в вакууме рт.ст. до 80160°С . При этом возгон етс ацетилацетонат иттриевой подгруппы, а соединение .элемента цериевой подгруппы остаетс в твердой фазе.The dry preparation is heated in a vacuum of mercury. up to 80160 ° С. In this case, acetylacetonate of the yttrium subgroup is sublimated, and the compound of the element of the cerium subgroup remains in the solid phase.
Услови осаждени ацетилацетонатов .и результаты разделени РЗЭ представлены в таблице.The conditions for the precipitation of acetylacetonates. And the results of the separation of REE are presented in the table.
Из таблицы следует, что дл достижени указанной цели необходимо и достаточно использовать разделени РЗЭ растворы солей РЗЭ и ацетилацетоната аммони выбранного интервала концентрацией,В случае использовани менее концентрированных растворов (известные услови ) коэффициент разделени РЗЭ недостаточно высок. Дл более концентрированных, чем в выбранном интервале концентраций, растворов не представл етс возможным разделить РЗЭ, так как не происходит кристаллизаци аддуктов ацетилацетонатов из раствора.From the table it follows that to achieve this goal it is necessary and sufficient to use separation of REE solutions of salts of REE and ammonium acetylacetonate of the chosen concentration range. In case of using less concentrated solutions (known conditions) the separation factor of REE is not high enough. For solutions that are more concentrated than in the selected concentration range, it is not possible to separate the REE, since the acetylacetonates adducts do not crystallize from the solution.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU833603329A SU1159886A1 (en) | 1983-06-10 | 1983-06-10 | Method of separating rare-earth elements |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU833603329A SU1159886A1 (en) | 1983-06-10 | 1983-06-10 | Method of separating rare-earth elements |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU1159886A1 true SU1159886A1 (en) | 1985-06-07 |
Family
ID=21067714
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU833603329A SU1159886A1 (en) | 1983-06-10 | 1983-06-10 | Method of separating rare-earth elements |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU1159886A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5002747A (en) * | 1987-06-29 | 1991-03-26 | Rhone-Poulenc Chimie | Process for obtaining ceric oxide |
| US5011671A (en) * | 1987-06-29 | 1991-04-30 | Rhone-Poulenc Chimie | Ceric oxide with new morphological characteristics and method for obtaining same |
-
1983
- 1983-06-10 SU SU833603329A patent/SU1159886A1/en active
Non-Patent Citations (1)
| Title |
|---|
| Патент US № 3429904, кл. 260-429.1, 1969. Авторское сйидетельство СССР № 613578, кл. С 01 F 17/00, 1976. * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5002747A (en) * | 1987-06-29 | 1991-03-26 | Rhone-Poulenc Chimie | Process for obtaining ceric oxide |
| US5011671A (en) * | 1987-06-29 | 1991-04-30 | Rhone-Poulenc Chimie | Ceric oxide with new morphological characteristics and method for obtaining same |
| US5023070A (en) * | 1987-06-29 | 1991-06-11 | Rhone-Poulenc Chimie | Process for obtaining a ceric oxide |
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