Rhenium recovery

There is provided a hydrometallurgical process of recovering rhenium values from mixtures thereof with other metal values in which the rhenium values constitute a minority amount, for example super-alloys, which comprises subjecting the mixture to strongly oxidizing acid conditions, preferably an aqueous mixture of hydrochloric acid and nitric acid, so as to form perrhenate species of at least the major proportion of the rhenium values in the mixture, dissolving the perrhenate species and other soluble metal species in aqueous solution, removing insoluble metal species from the aqueous solution, and isolating the rhenium species from the solution.

MN-ACTIVATED OXIDOHALIDES AS CONVERSION LUMINESCENT MATERIALS FOR LED-BASED SOLID STATE LIGHT SOURCES

The present invention relates to Mn-activated luminescent materials, to a process for preparation thereof and to the use thereof as luminophores or conversion luminophores in light sources. The present invention further relates to a radiation-converting mixture comprising the luminescent material of the invention and a light source comprising the luminescent material of the invention or the radiation-converting mixture. The present invention further provides light sources, especially LEDs, and lighting units comprising a primary light source and the luminescent material of the invention or the radiation-converting mixture. The Mn-activated luminescent materials of the invention are especially suitable for creation of warm white light in LEDs. 1. Compound of the general formula (I):{'br': None, 'sub': 4-a', 'a', 'm/2+n/2', '2m', '4', '2', 'n, '(AB)X[MXO]\u2003\u2003(I)'}doped with Mn(IV), where the symbols and indices used are as follows:A is selected from the group consisting of H and D and mixtures thereof, where D is deuterium;{'sub': 4', '4', '4, 'B is selected from the group consisting of Li, Na, K, Rb, Cs, NH, ND, NRand mixtures of two or more thereof, where R is an alkyl or aryl radical;'}X is selected from the group consisting of F and Cl and mixtures thereof;M is selected from the group consisting of Cr, Mo, W, Re and mixtures of two or more thereof;0≤a≤4; 0 Подробнее

METHOD FOR SEPARATION OF CHEMICALLY PURE OS FROM METAL MIXTURES

A method for separating an amount of osmium from a mixture containing the osmium and at least one other additional metal is provided. In particular, method for forming and trapping OsOto separate the osmium from a mixture containing the osmium and at least one other additional metal is provided. 1. A method of producing an amount of chemically pure Re-186 isotope , comprising:irradiating a metal target comprising an amount of isotopically enriched osmium isotope consisting of Os-189, Os-192, or any combination thereof in a thermal proton flux to form a mixture comprising at least one osmium isotope and at least one additional metal comprising the Re-186 isotope;{'sub': '4', 'contacting the mixture with an oxidizing solution to form a volatile OsOvapor comprising the at least one osmium isotope;'}{'sub': '4', 'distilling the OsOvapor out of the oxidizing solution to form a second solution comprising the Re-186 dissolved in the oxidizing solution; and'}separating the Re-186 isotope from the second solution.2. The method of claim 1 , wherein the Re-186 isotope is separated from the second solution using a method chosen from contacting the second solution with a reducing agent claim 1 , contacting the second solution with a chromatographic column claim 1 , and electroplating the at least one metal from the second solution.3. The method of claim 2 , wherein the Re-186 isotope is separated from the second solution by contacting the second solution with an alumina chromatographic column and eluting the Re-186 using a saline solution.4. A method of producing an amount of chemically pure Os-191 isotope claim 2 , comprising:a. irradiating a metal target comprising an amount of isotopically enriched Os-190 metal in a thermal neutron flux to form a mixture comprising Os-191 isotope and at least one additional metal chosen from Ir-192, Ir-193, Ir-194, Pt-192, Pt-194, and combinations thereof;{'sub': '4', 'b. contacting the mixture with an aqueous solution of NaClO at a ...

Process for the production of ammonium perrhenate

The present invention relates to a process for the production of ammonium perrhenate (APR), which includes the use of Ca(OH)2 and to ammonium perrhenate which can be obtained by the method according to the invention.

Layer-by-Layer Sorting of Rhenium Disulfide via High-Density Isopycnic Density Gradient Ultracentrifugation

Separation of rhenium disulfide nanomaterials and related fluid density gradient media. 1. A method for separating planar nanomaterials by thickness , the method comprising:centrifuging a rhenium disulfide nanomaterial composition in contact with an aqueous fluid medium comprising a density gradient and an adjuvant component providing said medium a buoyant density greater than the buoyant density of said rhenium disulfide nanomaterial composition, wherein the rhenium disulfide nanomaterial composition comprises one or more surface active components and a polydisperse population of planar rhenium disulfide nanomaterials which is polydisperse at least with respect to thickness and has a mean thickness on the order of nanometers; andseparating the rhenium disulfide nanomaterial composition into two or more separation fractions each comprising a subpopulation of planar rhenium disulfide nanomaterials from the polydisperse population, wherein the subpopulation of planar rhenium disulfide nanomaterials in at least one of the two or more separation fractions has a mean thickness that is less than the mean thickness of the polydisperse population.2. The method of claim 1 , wherein the planar nanomaterials comprise mono- and bilayer rhenium disulfide nanomaterials.3. The method of claim 1 , wherein the one or more surface active components comprise a planar organic group.4. The method of claim 3 , wherein the one or more surface active components is sodium cholate.5. The method of claim 1 , wherein said aqueous fluid medium comprises iodixanol and an adjuvant component to increase the buoyant density of said medium.6. The method of claim 5 , wherein said adjuvant component is CsCl.7. A method for separating rhenium disulfide nanomaterials by thickness claim 5 , the method comprising:sonicating a rhenium disulfide material in a first fluid medium to provide a rhenium disulfide nanomaterial composition;centrifuging the rhenium disulfide nanomaterial composition in contact with ...

PROCESS FOR PRODUCING PURE AMMONIUM PERRHENATE

The present invention provides an ammonium perrhenate containing less than 5 ppm of potassium. 1. An ammonium perrhenate containing less than 5 ppm of potassium.2. The ammonium perrhenate as recited in claim 1 , wherein the ammonium perrhenate contains less than 1 ppm of potassium.3. The ammonium perrhenate as recited in claim 1 , wherein the ammonium perrhenate is prepared by a process comprising:producing a first aqueous suspension containing an ammonium perrhenate;adding a stoichiometric amount of a nitric acid to the first aqueous suspension so as to produce a second suspension;introducing the second suspension into a cathode space of an electrolysis cell, wherein the electrolysis cell is divided by a cation-exchange membrane into the cathode space and an anode space;cathodically reducing the nitric acid to a nitrous acid in the cathode space by applying an electric potential;reacting the nitrous acid with ammonium ions of the ammonium perrhenate so as to form an aqueous perrhenic acid;removing potassium ions from the aqueous perrhenic acid; andadding at least a stoichiometric amount of ammonia to the aqueous perrhenic acid so as to produce the pure ammonium perrhenate.4. A method of using an ammonium perrhenate containing less than 5 ppm of potassium as a precursor for the preparation of at least one of a pure rhenium compound and a pure rhenium metal for use in a superalloy claim 1 , the method comprising:providing an ammonium perrhenate containing less than 5 ppm of potassium;introducing the ammonium perrhenate as a precursor in the least one of a rhenium compound and a rhenium metal so as to produce the at least one of a pure rhenium compound and a pure rhenium metal; andapplying the at least one of a pure rhenium compound and a pure rhenium metal as an alloying metal in the superalloy.5. The method as recited in claim 4 , wherein the ammonium perrhenate contains less than 1 ppm of potassium.6. A method of using an ammonium perrhenate containing less than 5 ...

METHOD FOR PLATINUM RECOVERY FROM MATERIALS CONTAINING RHENIUM AND PLATINUM METALS

The present disclosure relates to hydrometallurgical methods for the isolation and recovery of platinum from rhenium-containing materials, and more particularly, from superalloys containing rhenium, platinum, and other metals. The disclosure also relates to apparatuses capable of carrying out the hydrometallurgical methods and the product streams generated from the methods and apparatuses. 1. A system configured to separate platinum and rhenium wherein the system comprises:an apparatus configured to digest an alloy feed comprising platinum and rhenium in a complexing ligand comprising halides in an amount sufficient to complex the platinum present in the alloy feed;an apparatus configured to separate resulting solids from the liquid comprising platinum and rhenium, wherein a concentration of rhenium and/or platinum in the resulting solids is from 50 to 100% lower than a concentration of rhenium and/or platinum in the alloy feed;an apparatus configured to contact a liquid comprising platinum and rhenium with a chelating ion exchange resin, whereby the platinum is adsorbed onto the chelating ion exchange resin,an apparatus configured to obtain a liquid stream comprising a higher relative concentration of rhenium to platinum than a relative concentration of rhenium to platinum in the liquid comprising platinum and rhenium.2. The system of claim 1 , wherein the chelating ion exchange resin is functionalized with thiourea or thiouronium groups.3. The system of claim 1 , wherein the pH of the liquid comprising platinum and rhenium is below 5.4. The system of claim 1 , wherein the complexing ligand is selected from the group consisting of hydrochloric acid claim 1 , a chloride containing salt claim 1 , bromine and bromide salts claim 1 , or chlorine.5. The system of claim 1 , wherein the apparatus configured to digest an alloy feed is configured to digest the alloy feed comprising platinum and rhenium in an oxidant capable of oxidizing both platinum and rhenium from their ...

ATOMICALLY THIN CRYSTALS AND FILMS AND PROCESS FOR MAKING SAME

The invention provides a process for exfoliating a 3-dimensional layered material to produce a 2-dimensional material, said process comprising the steps of mixing the layered material in a solvent to provide a mixture; applying energy, for example ultrasound, to said mixture, and removing the energy applied to the mixture, such that sedimentation of the 2-dimensional material out of solution as a weakly re-aggregated, exfoliated 2-dimensional material is produced. The invention provides a fast, simple and high yielding process for separating 3-dimensional layered materials into individual 2-dimensional layers or flakes, which do not strongly re-aggregate, without utilising hazardous solvents. 1. A process for exfoliating a 3-dimensional layered material to produce a 2-dimensional material said process comprising the steps of:mixing the layered material in water to provide a mixture;applying energy, for example ultrasound, to said mixture to exfoliate the 3-dimensional layered material and produce dispersed exfoliated 2-dimensional material; andremoving the energy applied to the mixture, such that sedimentation of the 2-dimensional material out of solution as a weakly re-aggregated, exfoliated 2-dimensional material is produced.2. A process according to claim 1 , further comprising the step of removing the water from the re-aggregated exfoliated 2-dimensional material to form a solid of re-aggregated exfoliated 2-dimensional material.3. A process according to claim 1 , further comprising the step of removing the water from the re-aggregated exfoliated 2-dimensional material to form a solid of re-aggregated exfoliated 2-dimensional material claim 1 , wherein the step of removing the water is by decantation claim 1 , vacuum filtration or accelerated evaporation.41. A process according to claim 1 , further comprising the step of removing the water from the re-aggregated exfoliated 2-dimensional material to form a solid of re-aggregated exfoliated 2-dimensional material ...

Combined cracking and selective hydrogen combustion for catalytic cracking

A catalyst system and process for combined cracking and selective hydrogen combustion of hydrocarbons are disclosed. The catalyst comprises (1) at least one solid acid component, (2) at least one metal-based component comprised of one or more elements from Groups 1 and 2; one or more elements from Group 3; one or more elements from Groups 4–15 of the Periodic Table of the Elements; and at least one of oxygen and sulfur and (3) at least one of at least one support, at least one filler and at least one binder. The process is such that the yield of hydrogen is less than the yield of hydrogen when contacting the hydrocarbons with the solid acid component alone.

Method of obtaining pure ammonium perrhenate

FIELD: chemistry. SUBSTANCE: invention relates to method of obtaining pure ammonium perrhenate, as well as to highly pure ammonium perrhenate. Method of obtaining pure ammonium perrhenate by electrolysis includes obtaining water suspension, which contains technical ammonium perrhenate, addition of nitric acid, introduction of obtained suspension into cathode space of electrolytic cell, application of voltage, cathode reduction of nitric acid to nitrous acid, interaction of nitrous acid with ammonium ions of ammonium perrhenate with formation of aqueous perrhenic acid, separation of potassium ions from aqueous perrhenic acid and separation of pure ammonium perrhenate from perrhenic acid by addition of ammonia. Ammonium perrhenate represents crystalline agglomerate with size larger than 10 mcm, which contains less than 5 ppm of potassium. Also claimed is application of ammonium perrhenate as precursor for obtaining rhenium compounds and/or metal rhenium for application in superalloys or for application of coatings on X-ray rotating anodes. EFFECT: invention provides efficient and environmentally friendly method of obtaining pure ammonium perrhenate. 17 cl, 3 dwg, 1 tbl, 6 ex РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 514 941 C2 (51) МПК C01G 47/00 (2006.01) C25B 1/28 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ (21)(22) Заявка: ИЗОБРЕТЕНИЯ К ПАТЕНТУ 2010154378/05, 29.04.2009 (24) Дата начала отсчета срока действия патента: 29.04.2009 Приоритет(ы): (30) Конвенционный приоритет: (72) Автор(ы): ОЛБРИХ Армин (DE), ЯН Маттиас (DE), МЕЕЗЕ-МАРКТШЕФФЕЛЬ Юлиане (DE), ЦЕРТАНИ Рюдигер (DE) (43) Дата публикации заявки: 20.07.2012 Бюл. № 20 R U (73) Патентообладатель(и): Х.К. ШТАРК ГМБХ (DE) 05.06.2008 DE 102008026910.7 (45) Опубликовано: 10.05.2014 Бюл. № 13 A, 15.11.2004. AT 292629 B, 10.09.1971. RU 2355640 C2, 20.05.2009 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 11.01.2011 (86) Заявка PCT: 2 5 1 4 9 4 1 (56) Список документов, ...

Hydroprocessing catalysts and methods for making thereof

A method to prepare an improved catalyst feed to a system to upgrade heavy oil. The method comprises: providing a spent catalyst that has been used in a hydroprocessing operation has with a solid content ranging from 5 to 50 wt. % in soluble hydrocarbons and having less than 80% but more than 10% of original catalytic activity; removing at least 50% of the soluble hydrocarbons removed in a deoiling step; treating the deoiled spent catalyst with a treating solution containing at least one of plain water, a mineral acid, an oxidizing agent, and combinations thereof to reduce the concentration of at least one metal contaminant in the deoiled spent catalyst by at least 40%. After treatment, the treated deoiled spent catalyst is slurried in a hydrocarbon medium, and fed to the heavy oil upgrade system as part of the catalyst feed system with a fresh slurry catalyst.

A method for recovering rhenium and other metals from rhenium-bearing materials

本发明涉及从含Re材料中回收铼(Re)和其他金属的方法，包括如下作为示例性方法的步骤：(i)向浸出浆料中加入含Re材料；(ii)调节浆料的pH以在金属盐溶液中获得可溶形式的Re以及不溶残渣；(iii)过滤所述金属盐溶液以除去所述不溶残渣；(iv)从金属盐溶液中选择性沉淀Re；(v)从金属盐溶液中过滤所述的Re沉淀物以获得Re滤饼；(vi)配制并干燥所述Re滤饼以获得硫化铼产品；(vii)将所述硫化铼产品与含Re的钼(Mo)富集物合并以获得Mo/Re富集物；(viii)焙烧所述Mo/Re富集物以获得Mo氧化物产品和含有Re的烟气；以及(ix)处理所述含Re的烟气以获得高铼酸铵。

A kind of preparation method and application of rhenium disulfide nanometer sheet

本发明公开了一种二硫化铼纳米片的制备方法，将铼源和黄酸盐混合，经水热反应，制得单层和/或少层二硫化铼纳米片。本方法选用大规模商业生产的黄原酸盐为硫源，重复性好、成本低，并可制备出单层和/或少层二硫化铼纳米片。该纳米片可应用于吸附、光催化、光降解、润滑、光电器件等领域。

It is a kind of that the method that rhenium is reclaimed in spent acid is smelted from molybdenum

本发明公开了一种从钼冶炼废酸中回收铼的方法，属于金属铼回收利用技术领域。该方法包括：1)将钼冶炼废酸过滤，滤液经复合胺基乙烯系弱碱型阴离子交换树脂柱吸附，至吸附饱和；2)吸附饱和后用氨水解吸，收集解吸液，蒸发结晶得到高铼酸铵。其中，复合胺基乙烯系弱碱型阴离子交换树脂对铼的饱和吸附量大，解吸液中铼含量较废酸中铼富集100倍以上，并且相较现有萃取法和离子交换法对铼的回收率高，达98％以上。同时利用高铼酸铵、钼酸铵、硫酸铵的溶解度差异，采用蒸发结晶操作纯化高铼酸铵，所得高铼酸铵的纯度达99.9％以上。本发明中铼回收工艺简单、环保，操作简便，适于规模化生产应用。

Preparation method of rhenium-tricarbonyl complex and its precursor

A method for preparing a rhenium-tricarbonyl complex precursor is provided to inhibit formation of side products and obtain the rhenium-tricarbonyl complex precursor with high yield by using a borane exchange resin as a reductant and an anion removing agent. The method for preparing a rhenium-tricarbonyl complex precursor comprises the steps of: (a) reacting perrhenate with BH3ÀNH3, K2[H3BCO2] and phosphate using the borane exchange resin as an additional reductant to obtain a rhenium-tricarbonyl complex precursor; and (b) reacting the rhenium-tricarbonyl complex precursor with a ligand to obtain a rhenium-tricarbonyl complex.

Extraction of rhenium

FIELD: metallurgy. SUBSTANCE: proposed method comprises extracting essential part of rhenium from catalyst by direct contact between catalyst and one or more polar non-acid, in fact, anhydrous organic solvents. In contact with solvent, solution is formed containing said polar non-acid organic solvent and extracted rhenium. Note here that said polar non-acid organic solvent with molar structure that contains one or more atoms of oxygen, nitrogen and/or halogen. EFFECT: simplified and cheaper process, selectivity of rhenium extraction. 23 cl, 2 tbl, 11 ex РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 2 478 721 (13) C2 (51) МПК C22B 7/00 (2006.01) C22B 61/00 (2006.01) C22B 11/00 (2006.01) C22B 3/16 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (21)(22) Заявка: 2010145307/02, 06.05.2009 (24) Дата начала отсчета срока действия патента: 06.05.2009 (72) Автор(ы): РИЗКАЛЛА Набиль (US), РОКИККИ Анджей (US) (43) Дата публикации заявки: 20.06.2012 Бюл. № 17 2 4 7 8 7 2 1 (45) Опубликовано: 10.04.2013 Бюл. № 10 (56) Список документов, цитированных в отчете о поиске: WO 9507754 A1, 23.02.1995. WO 2004076469 A1, 10.09.2004. JP 2001025665 A, 30.01.2001. RU 2281340 C2, 10.08.2006. RU 2083280 C1, 10.07.1997. 2 4 7 8 7 2 1 R U (86) Заявка PCT: EP 2009/003242 (06.05.2009) C 2 C 2 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 06.12.2010 (87) Публикация заявки РСТ: WO 2009/135665 (12.11.2009) Адрес для переписки: 190000, Санкт-Петербург, ул. Малая Морская, 15, офис 5, ВОХ 1125, ООО "ПАТЕНТИКА", пат.пов. М.И.Ниловой (54) ИЗВЛЕЧЕНИЕ РЕНИЯ (57) Реферат: Настоящее изобретение относится к извлечению рения из катализатора, содержащего рений и, по меньшей мере, серебро на твердом носителе. Способ включает извлечение из катализатора, по меньшей мере, существенной части рения путем непосредственного контакта катализатора с одним или более полярными некислотными практически безводными органическими растворителями. При контакте с ...

Patent DE3536397C2

Recycling of superalloys with the aid of an alkali metal salt bath

本发明涉及一种在碱金属盐浴中分解超合金、特别是超合金废料，然后回收贵金属的方法，回收钨、钽和铼之类的非常贵重的金属。

Extracting molybdenum and radioactive origin187Methods for Os

本发明公开了一种提取钼和放射性成因187Os的方法，属于矿物提取技术领域，解决现有工艺无法同时回收钼和放射性成因 187 Os，并且回收过程严重污染环境的问题。提取方法包括如下步骤：配料→焙烧→水浸→过滤，得到第一液相和第一固相，第一固相进入酸煮钼和蒸馏锇工艺，得到挥发性四氧化锇和浆液，挥发性四氧化锇进入后续的提取 187 Os工艺，浆液进入后续的提取钼工艺。提取钼工艺包括如下步骤：过滤→沉淀杂质→离子交换提取钼→洗脱→结晶得到钼酸铵。本发明实现了采用一个工艺同时提取钼和 187 Os。

Method for manufacturing nanometer scale crystal titanium dioxide photo-catalyst sol-gel

A method for manufacturing nanometer scale crystal titanium dioxide photo-catalyst sol-gel is disclosed. Titanium compound is dissolved and diluted in a predetermined acid liquid to form titanium diluted solution, and the pH value is adjusted to be between 7.0 to 9.0. Then titanium hydroxide in the solution is filtered so as to get filter cake and then it is cleaned. Then oxidant and inorganic acid is added to form titanium dioxide sol-gel solution under predetermined conditions. The titanium dioxide sol-gel solution can be transparent or yellow color depending on operation conditions. The content of photo-catalyst is between 0.5 to 10%.

Method for rhenium isolation

FIELD: chemistry. SUBSTANCE: method for rhenium isolation implies passing rhenium-containg solution through strongly-basic anion-exchange resin and elution of adsorbed rhenium with high-concentration aqueous solution of hydrochloric acid. Anion-exchange resin is treated with an oxidising aqueous solution, where hydrogen peroxide is used as an oxidiser. EFFECT: increase in ion exchanger service life. 10 cl, 7 ex ÐÎÑÑÈÉÑÊÀß ÔÅÄÅÐÀÖÈß RU (19) (11) 2 323 884 (13) C2 (51) ÌÏÊ C01G 47/00 (2006.01) C22B 3/00 (2006.01) ÔÅÄÅÐÀËÜÍÀß ÑËÓÆÁÀ ÏÎ ÈÍÒÅËËÅÊÒÓÀËÜÍÎÉ ÑÎÁÑÒÂÅÍÍÎÑÒÈ, ÏÀÒÅÍÒÀÌ È ÒÎÂÀÐÍÛÌ ÇÍÀÊÀÌ (12) ÎÏÈÑÀÍÈÅ ÈÇÎÁÐÅÒÅÍÈß Ê ÏÀÒÅÍÒÓ (21), (22) Çà âêà: 2002129603/15, 06.11.2002 (24) Äàòà íà÷àëà îòñ÷åòà ñðîêà äåéñòâè ïàòåíòà: 06.11.2002 (30) Êîíâåíöèîííûé ïðèîðèòåò: 09.11.2001 (ïï.1-10) DE 10155237.8 (73) Ïàòåíòîîáëàäàòåëü(è): Õ. Ê. ØÒÀÐÊ ÃÌÁÕ (DE) (43) Äàòà ïóáëèêàöèè çà âêè: 10.05.2004 R U (72) Àâòîð(û): ÌÅÅÇÅ-ÌÀÐÊÒØÅÔÔÅËÜ Þëèàíý (DE), ØÒÎËËÅÐ Âèêòîð (DE), ÎËÜÁÐÈÕ Àðìèí (DE), ÌÀÒÈ Âîëüôãàíã (DE), ÅÐÁ Ìèõàýëü (DE) (45) Îïóáëèêîâàíî: 10.05.2008 Áþë. ¹ 13 2 3 2 3 8 8 4 Àäðåñ äë ïåðåïèñêè: 103064, Ìîñêâà, óë. Êàçàêîâà,16, ÍÈÈÐ Êàíöåë ðè "Ïàòåíòíûå ïîâåðåííûå Êâàøíèí, Ñàïåëüíèêîâ è ïàðòíåðû", Â.Ï.Êâàøíèíó C 2 C 2 (56) Ñïèñîê äîêóìåíòîâ, öèòèðîâàííûõ â îò÷åòå î ïîèñêå: Çåëèêìàí À.Í., Ìåòàëëóðãè ðåäêèõ ìåòàëëîâ, Ìîñêâà, Ìåòàëëóðãè , 1978, ñ.368370. US 2945743 À, 19.07.1960. SU 163359 A1, 01.01.1964. JP 59207842 A, 26.11.1984. GB 2836641 A1, 05.04.1979. US 3672874 A, 27.06.1972. (57) Ðåôåðàò: Èçîáðåòåíèå îòíîñèòñ ê òåõíîëîãèè èçâëå÷åíè ðåíè , îñîáåííî ê ñïîñîáó èçâëå÷åíè ðåíè ïðè àäñîðáöèè íà ñèëüíîîñíîâíûõ èîíîîáìåííèêàõ. Ñïîñîá èçâëå÷åíè ðåíè âêëþ÷àåò ïðîïóñêàíèå æèäêîñòè, ñîäåðæàùåé ðåíèé, ÷åðåç ñèëüíîîñíîâíóþ àíèîíîîáìåííóþ ñìîëó è ýëþèðîâàíèå àäñîðáèðîâàííîãî ðåíè ñ ïîìîùüþ âûñîêîêîíöåíòðèðîâàííîãî âîäíîãî ðàñòâîðà ñîë íîé êèñëîòû. Àíèîíîîáìåííóþ ñìîëó îáðàáàòûâàþò âîäíûì ðàñòâîðîì, ñîäåðæàùèì îêèñëèòåëüíîå ñðåäñòâî, â êà÷åñòâå êîòîðîãî èñïîëüçóþò ïåðåêèñü âîäîðîäà. Ðåçóëüòàò ...

Recovery of rhenium

本发明涉及从在固体载体上含有铼并至少含有银的环氧乙烷的催化剂回收铼的方法，其中通过催化剂与一种或多种基本上不含有水的极性非酸性有机溶剂的紧密接触，至少大部分存在于催化剂中的铼被提取，从而形成含有极性非酸性有机溶剂和被提取的铼的含铼溶液，该极性非酸性有机溶剂在其分子结构中含有一个或多个氧、氮、和/或卤素原子。

Recycling of superalloys with the aid of an alkali metal salt bath

본 발명은 초합금, 특히 초합금 스크랩을 알칼리 금속 염 배쓰에서 분해하고, 유가 금속을 회수하는 방법에 관한 것이고, 텅스텐, 탄탈륨 및 레늄과 같은 매우 귀중한 금속을 회수한다. The present invention relates to a method of decomposing superalloys, particularly superalloy scrap, in an alkali metal salt bath and recovering valuable metals, and recovering very valuable metals such as tungsten, tantalum and rhenium.

METHOD FOR PRODUCING PURE PERRENATE AMMONIUM

1. Способ получения чистого перрената аммония путем электролиза, отличающийся тем, что получают водную суспензию, содержащую технический перренат аммония, к полученной суспензии добавляют стехиометрическое количество азотной кислоты и вводят в катодное пространство электролитической ячейки, разделенной катионообменной мембраной на катодное и анодное пространство, приложением необходимого напряжения катодно восстанавливают азотную кислоту до азотистой кислоты в катодном пространстве, полученную азотистую кислоту подвергают взаимодействию с аммониевыми ионами перрената аммония с образованием водной рениевой кислоты, удаляют ионы калия из полученной водной рениевой кислоты и отделяют чистый перренат аммония от рениевой кислоты добавлением, как минимум, стехиометрического количества аммиака. ! 2. Способ по п.1, отличающийся тем, что концентрация азотной кислоты в суспензии составляет от 0,5 до 10 мол/литр. !3. Способ по п.1, отличающийся тем, что концентрация азотной кислоты в суспензии составляет от 1 до 5 мол/литр. ! 4. Способ по п.1, отличающийся тем, что суспензию через сборник с помощью насоса подвергают циркуляции через катодное пространство. ! 5. Способ по п.1, отличающийся тем, что температура в электролитической ячейке составляет 20-100°С. ! 6. Способ по п.1, отличающийся тем, что температура в электролитической ячейке составляет 40-60°С. ! 7. Способ по п.4, отличающийся тем, что температура в сборнике составляет более 60°С. ! 8. Способ по п.4, отличающийся тем, что температура в сборнике составляет более 95°С. !9. Способ по п.1, отличающийся тем, что катодное восстановление азотной кислоты в азотистую кислоту проводят при РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 2010 154 378 (13) A (51) МПК C01G 47/00 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (71) Заявитель(и): Х.К. ШТАРК ГМБХ (DE) (21)(22) Заявка: 2010154378/05, 29.04.2009 Приоритет(ы): (30) Конвенционный приоритет: 05.06.2008 DE 102008026910.7 (87) Публикация заявки ...

PROCESS FOR SEPARATING RHENIUM FROM ACID SOLUTIONS CONTAINING MOLYBDENE.

Procédé de séparation de rhénium d'avec du molybdène et/ou d'autres éléments à partir de solutions acides par fixation du Re sur résine ou solvant du type amine tertiaire, lavage de l'agent de fixation par une solution acide d'un composé de Re pur, et élution par une solution basique. Process for the separation of rhenium from molybdenum and / or other elements from acid solutions by fixing the Re on resin or solvent of the tertiary amine type, washing the fixing agent with an acid solution of a compound of pure Re, and elution with a basic solution.

PROCESS FOR PRODUCING HYDROGEN FROM HYDROGEN SULFIDE

A method for recovering rhenium and other metals from rhenium-bearing materials

The present invention relates to a method of recovering rhenium (Re) and other metals from Re-bearing materials including, as an exemplary process, the steps: (i) adding Re-bearing materials into a leaching slurry; (ii) adjusting the pH of the slurry to obtain Re in soluble form in a metal salt solution and insoluble residues; (iii) filtering the metal salt solution to remove the insoluble residues; (iv) selectively precipitating Re from the metal salt solution; (v) filtering the Re precipitate from the metal salt solution to obtain a Re filtercake; (vi) formulating and drying the Re filtercake to obtain a Re sulfide product; (vii) combining the Re sulfide product with a Molybdenum (Mo) concentrate containing Re to obtain a Mo/Re concentrate; (viii) roasting the Mo/Re concentrate to obtain Mo oxide product and a flue gas containing Re; and (ix) treating the flue gas containing Re to obtain ammonium perrhennate.

Recovery of rhenium

Rhenium is recovered from solution by adsorption on activated carbon, followed by elution with a water-soluble alcohol or an alcohol-water mixture.

A method for recovering rhenium and other metals from rhenium-bearing materials

The present invention relates to a method of recovering rhenium (Re) and other metals from Re-bearing materials including, as an exemplary process, the steps: (i) adding Re-bearing materials into a leaching slurry; (ii) adjusting the pH of the slurry to obtain Re in soluble form in a metal salt solution and insoluble residues; (iii) filtering the metal salt solution to remove the insoluble residues; (iv) selectively precipitating Re from the metal salt solution; (v) filtering the Re precipitate from the metal salt solution to obtain a Re filtercake; (vi) formulating and drying the Re filtercake to obtain a Re sulfide product; (vii) combining the Re sulfide product with a Molybdenum (Mo) concentrate containing Re to obtain a Mo/Re concentrate; (viii) roasting the Mo/Re concentrate to obtain Mo oxide product and a flue gas containing Re; and (ix) treating the flue gas containing Re to obtain ammonium perrhennate.

Process for recovery of molybdenum and rhenium from ores

In the recovery of molybdenum and rhenium values from sulfide ores, silica impurity is reduced to low levels by adding alumina to a carbonate fusion mix in an amount sufficient to combine with the silica present to form insoluble aluminum silicates, thus preventing its removal from the fusion mass during removal of soluble molybdenum and rhenium values by leaching, and thereby avoiding the necessity for conventional subsequent precipitation and filtration removal steps.

Rhenium recovery

There is provided a hydrometallurgical process of recovering rhenium values from mixtures thereof with other metal values in which the rhenium values constitute a minority amount, for example super-alloys, which comprises subjecting the mixture to strongly oxidizing acid conditions, preferably an aqueous mixture of hydrochloric acid and nitric acid, so as to form perrhenate species of at least the major proportion of the rhenium values in the mixture, dissolving the perrhenate species and other soluble metal species in aqueous solution, removing insoluble metal species from the aqueous solution, and isolating the rhenium species from the solution.

Producing hydrogen from an effluent of hydrogen sulfide, comprises contacting the effluent with a material having a metallic oxide for producing hydrogen and a metallic sulfur, and removing the hydrogen using a hydrogen-permeable membrane

The process for producing hydrogen from an effluent of hydrogen sulfide, comprises contacting (8) the effluent with a material having a metallic oxide to a temperature lower than 150[deg] C for producing hydrogen and a metallic sulfur, and removing the hydrogen using a hydrogen-permeable membrane. The effluent is contacted with the material using a tower reactor, a reactor (6) with fixed-bed (7), and a moving-bed reactor. The metallic oxide is contained in an enclosure having a wall. Provoking a migration of hydrogen through the membrane by difference in pressure or hydrogen concentration. The process for producing hydrogen from an effluent of hydrogen sulfide, comprises contacting (8) the effluent with a material having a metallic oxide to a temperature lower than 150[deg] C for producing hydrogen and a metallic sulfur, and removing the hydrogen using a hydrogen-permeable membrane. The effluent is contacted with the material using a tower reactor, a reactor (6) with fixed-bed (7), and a moving-bed reactor. The metallic oxide is contained in an enclosure having a wall. Provoking a migration of hydrogen through the membrane by difference in pressure or hydrogen concentration. The hydrogen is separated to obtain an effluent impoverished in hydrogen and a hydrogen-rich stream. The membrane comprises a dense film having a polymer whose transition temperature is higher than 150[deg] C. The metallic sulfur is regenerated by combustion with oxygen at a temperature higher than 750[deg] C to form a sulfur oxide. The sulfur oxide is reacted with water to produce sulfuric acid, and transformed to water and elementary sulfur according to Claus reaction.

Acid process for the recovery of rhenium values from minerals containing same

METHOD FOR PREVENTING THE EXTRACTION OF TECHNETIUM AND / OR RHENIUM, IN PARTICULAR IN THE EXTRACTION OF URANIUM AND / OR PLUTONIUM, BY AN ORGANIC SOLVENT

PROCEDE POUR EVITER L'EXTRACTION DU TECHNETIUM ETOU DU RHENIUM, NOTAMMENT LORS DE L'EXTRACTION DE L'URANIUM ETOU DU PLUTONIUM, PAR UN SOLVANT ORGANIQUE. CE PROCEDE QUI PERMET L'EXTRACTION D'UN ELEMENT CHIMIQUE, TEL QUE L'URANIUM OU LE PLUTONIUM PRESENT DANS UNE SOLUTION AQUEUSE 10, CONTENANT A LA FOIS LEDIT ELEMENT, DU TECHNETIUM ETOU DU RHENIUM ET DU ZIRCONIUM ETOU DU HAFNIUM, CONSISTANT A METTRE LA SOLUTION AQUEUSE EN CONTACT A AVEC UN SOLVANT ORGANIQUE 12 CAPABLE D'EXTRAIRE LEDIT ELEMENT, SE CARACTERISE EN CE QUE, POUR EVITER L'EXTRACTION DU TECHNETIUM ETOU DU RHENIUM AVEC LEDIT ELEMENT, ON AJOUTE A LA SOLUTION AQUEUSE 10 UN AGENT COMPLEXANT DU ZIRCONIUM ETOU DU HAFNIUM EN QUANTITE SUFFISANTE POUR COMPLEXER TOUT LE ZIRCONIUM ETOU LE HAFNIUM, CET AGENT ETANT SOLUBLE DANS LA SOLUTION AQUEUSE 10. PROCESS FOR AVOIDING THE EXTRACTION OF TECHNETIUM AND OR RHENIUM, IN PARTICULAR DURING THE EXTRACTION OF URANIUM AND OR PLUTONIUM, BY AN ORGANIC SOLVENT. THIS PROCESS WHICH ALLOWS THE EXTRACTION OF A CHEMICAL ELEMENT, SUCH AS URANIUM OR PLUTONIUM PRESENT IN AN AQUEOUS SOLUTION 10, CONTAINING BOTH THESE ELEMENT, TECHNETIUM AND OR RHENIUM AND ZIRCONIUM AND OR HAFNIUM, CONSISTING TO PUT THE AQUEOUS SOLUTION IN CONTACT WITH AN ORGANIC SOLVENT 12 CAPABLE OF EXTRACTING THEIT ELEMENT, IS CHARACTERIZED IN THAT, TO AVOID THE EXTRACTION OF TECHNETIUM AND OR RHENIUM WITH THIS ELEMENT, A COMPLEXING AGENT OF ZIRCONIUM IS ADDED TO THE AQUEOUS SOLUTION 10 LOCK OF HAFNIUM IN SUFFICIENT QUANTITY TO COMPLEX ALL ZIRCONIUM AND OR HAFNIUM, THIS AGENT BEING SOLUBLE IN AQUEOUS SOLUTION 10.

Rhenium recovery

There is provided a hydrometallurgical process of recovering rhenium values from mixtures thereof with other metal values in which the rhenium values constitute a minority amount, for example super-alloys, which comprises subjecting the mixture to strongly oxidizing acid conditions, preferably an aqueous mixture of hydrochloric acid and nitric acid, so as to form perrhenate species of at least the major proportion of the rhenium values in the mixture, dissolving the perrhenate species and other soluble metal species in aqueous solution, removing insoluble metal species from the aqueous solution, and isolating the rhenium species from the solution.

Fine particle composite, method for producing the same, catalyst used for solid polymer fuel cell, and solid polymer fuel cell

This invention provides a process for producing a fine-particle composite comprising a fine particle of a sulfide or a composite sulfide of one or more elements selected from molybdenum (Mo), rhodium (Rh), ruthenium (Ru), and rhenium (Re) and electroconductive fine particles. The production process comprises the step of preparing a solvent mixed liquid from an electroconductive carbon powder, one or more compounds containing an element selected from molybdenum (Mo), rhodium (Rh), ruthenium (Ru), and rhenium (Re), and a compound containing sulfur (S), and the step of subjecting the solvent mixed liquid to a hydrothermal reaction or a solvothermal reaction at a pressure and a temperature that bring water or the solvent to a supercritical state or a subcritical state.

Perovskite material, method for preparing same, and secondary battery comprising perovskite material

本发明涉及钙钛矿材料、其制备方法以及包括钙钛矿材料的二次电池。由式1表示的钙钛矿材料，其中在式1中，0<x≤1，0<y≤1，0<x+y<1，0<z≤1.5，0≤δ≤1，A为H、Na、K、Rb、Cs、Ca、Sr、Ba、Y、La、Ce、Pr、Nd、Pm、Sm、Gd、Tb、Dy、Ho、Er、或其组合，且M为Ni、Pd、Pb、Fe、Ir、Co、Rh、Mn、Cr、Ru、Re、Sn、V、Ge、W、Zr、Mo、Hf、U、Nb、Th、Ta、Bi、Li、H、Na、K、Rb、Cs、Ca、Sr、Ba、Y、La、Ce、Pr、Nd、Pm、Sm、Gd、Tb、Dy、Ho、Er、Mg、Al、Si、Sc、Zn、Ga、Ag、Cd、In、Sb、Pt、Au、或其组合。式1Li x A y M z O 3‑δ 。

Process for the preparation of ammonium perrhenate

Die vorliegende Anmeldung betrifft ein Verfahren zur Herstellung von Ammoniumperrhenat (APR), das den Einsatz von Ca(OH)2 umfasst sowie Ammoniumperrhenat, das gemäß dem erfindungsgemäßen Verfahren erhältlich ist. The present application relates to a process for the preparation of ammonium perrhenate (APR), which comprises the use of Ca (OH) 2 and ammonium perrhenate, which is obtainable by the process according to the invention.

Selective extraction of rhenium from aqueous sulfuric acid solutions

The method of rhenium and other metals is reclaimed from the material of rhenium-containing

本发明涉及从含Re材料中回收铼(Re)和其他金属的方法，包括如下作为示例性方法的步骤：(i)向浸出浆料中加入含Re材料；(ii)调节浆料的pH以在金属盐溶液中获得可溶形式的Re以及不溶残渣；(iii)过滤所述金属盐溶液以除去所述不溶残渣；(iv)从金属盐溶液中选择性沉淀Re；(v)从金属盐溶液中过滤所述的Re沉淀物以获得Re滤饼；(vi)配制并干燥所述Re滤饼以获得硫化铼产品；(vii)将所述硫化铼产品与含Re的钼(Mo)富集物合并以获得Mo/Re富集物；(viii)焙烧所述Mo/Re富集物以获得Mo氧化物产品和含有Re的烟气；以及(ix)处理所述含Re的烟气以获得高铼酸铵。

Two-dimensional material nanometer roll and its preparation method and application

本发明涉及纳米材料及其制备领域，公开了一种二维材料纳米卷及其制备方法和应用，其中，该二维材料纳米卷为通过采用溶液浸渍和/或滴涂在二维材料薄膜的表面上，从而使该二维材料薄膜自动卷曲而得到的；其中，该二维材料纳米卷为中空棒状，长度为50nm‑1cm，外直径为5‑500nm，内中空层直径为2‑100nm，层间距为0.3‑10nm；制备的基于该二维材料纳米卷的场效应晶体管的迁移率为8‑4000厘米/(伏·秒)。采用本发明的方法能够高收率地制备高质量的二维材料纳米卷，另外，该方法操作简单灵活，合成成本低，反应时间短。

Film for surface-enhanced raman spectroscopy and manufacturing method thereof

The present invention relates to a film for surface-enhanced Raman spectroscopy and a method for manufacturing the same. One aspect of the present invention provides a film for surface-enhanced Raman spectroscopy comprising: a substrate; and a transition metal dichalcogenide layer formed on the substrate, wherein the transition metal dichalcogenide layer includes a compound represented by chemical formula 1, ReO_xS_y. Wherein x is a rational number greater than 0 and less than or equal to 2, and y is a rational number greater than 0 and less than or equal to 2.

Methods and systems for recoverying rhenium from a copper leach

Various embodiments provide new methods of rhenium recovery The methods can include subjecting a metal-bearing solution to an activated carbon bed, and adsorbing rhenium onto the activated carbon. The methods can also include heating a basic aqueous elution solution and eluting the rhenium from the activated carbon with the heated elution solution.

Electro-oxidative method for the recovery of molybdenum from sulfide ores

Rhenium recovery

There is provided a hydrometallurgical process of recovering rhenium values from mixtures thereof with other met-al values in which the rhenium values constitute a minority amount, for example super-alloys, which comprises subjecting the mixture to strongly oxidizing acid conditions, preferably an aqueous mixture of hydrochloric acid and nitric acid, so as to form perrhenate species of at least the major proportion of the rhenium values in the mixture, dissolving the perrhenate species and oth-er soluble metal species in aqueous solution, removing insoluble metal species from the aqueous solution, and isolating the rheni-um species from the solution.

Titania supports for fisher-tropsch catalysts

Shaped catalyst carrier containing titania, wherein at least 50 wt% of the titania is present as brookite, and wherein the carrier comprises between 40 and 100 wt% of crystalline titania based on the total weight of the carrier. Catalyst or catalyst precursors comprising the shaped catalyst carriers as described above, and further comprising a Group VIII metal or metal compound, especially for use in the synthesis of hydrocarbons from carbon monoxide and hydrogen.

Process for the preparation of transition metals as well as their oxides

There is described a process for preparing transition metals of the groups VIIB and VIIIB of the Periodic Table with the exception of Fe, Co and Ni in metallic form or as oxide, by decomposition of corresponding volatile transition metal compounds, wherein the transition metal compounds used are organometallic oxides of the general formula RaMebOc (I), where R is -a saturated or unsaturated, substituted or unsubstituted alkyl radical having from 1 to 12 carbon atoms, -a monocyclic or polycyclic hydrocarbon having from 3 to 12 carbon atoms -a substituted or unsubstituted aryl group having from 6 to 10 carbon atoms or -an aromatic pi -bonded ligand having from 5 to 8 carbon atoms in the ring, Me = the transition metal concerned, O = oxygen and a has a value from 1 to 12, b has a value from 1 to 3, c has a value from 1 to 8.o

Process for producing pure ammonium metallates

本发明涉及一种生产金属W、Mo、V、Cr和Re的纯金属酸铵(ammonium metallates)的方法，其中通过使碱性金属盐溶液与CO 2 反应将其pH值调到5-9，再使这些金属的盐溶液通过碳酸盐型的阴离子交换剂，其中除了生成碱金属碳酸盐溶液还形成金属酸盐型离子交换剂，然后将此离子交换剂洗至无碱为止，接着用氨水解吸，生成金属酸铵溶液和OH型阴离子交换剂，其中利用CO 2 处理使阴离子交换剂转化成碳酸盐型并再循环使用。

SOD MIMETIC METALLIC COMPLEXES

Complejos metálicos miméticos de SOD. La presente invención comprende un procedimiento para sintetizar complejos metálicos a partir de compuestos macrocíclicos poliazapiridinofanos, caracterizados por ser miméticos de la enzima superóxido dismutasa (SOD). Además la presente invención hace referencia a los propios compuestos metálicos macrocíclicos poliazapiridinofanos, a los complejos metálicos formados a partir de ellos y al uso de éstos en terapia para el tratamiento de enfermedades cuya etiología se basa en anomalías de la actividad de la SOD endógena, principalmente como antiinflamatorios, analgésicos y antioxidantes protectores del estrés oxidativo celular.

Rhenium (IV) sulphide nanotube material and method of preparation

A rhenium (IV) sulphide (ReS 2 ) nanotube material and a method of preparation of the rhenium (IV) sulphide (ReS 2 ) nanotube material. The rhenium (IV) sulphide (ReS 2 ) nanotube material comprises hollow cylinders of concentric rhenium (IV) sulphide layers, the ReS 2 interlayer distance being between 0.5 to 0.7 nm. Each ReS 2 layer consists of a layer of rhenium atoms sandwiched between two layers of sulfur atoms.

Rhenium recovery from superalloys and associated methods

A method of recovering rhenium from rhenium-containing superalloy scrap is provided. The superalloy is usually a nickel-based superalloy. The method includes the steps of forming an oxidation feedstock of flaky morphology of the superalloy scrap, and oxidizing the oxidation feedstock to convert rhenium into a volatile rhenium oxide. The flaky morphology of the oxidation feedstock is achieved by increasing the surface area of the superalloy scrap.

PROCESS FOR AVOIDING THE EXTRACTION OF TECHNETIUM AND / OR RHENIUM IN PARTICULAR DURING THE EXTRACTION OF URANIUM AND / OR PLUTONIUM, BY AN ORGANIC SOLVENT

A kind of method directly growing uniform two selenizings rhenium nanometer sheet on basal electrode and modified electrode and application

本发明涉及一种直接在基底电极上生长均匀的二硒化铼纳米片的方法及修饰电极和应用。所述方法包括如下步骤：S1：加热硒粉至硒粉气化；加热三氧化铼和基底电极，并通入还原性气体；S2：当三氧化铼加热至裂解后，将气化后的硒粉与其混合，继续升温至450~700℃，二硒化铼生长，沉积于所述基底电极上即得；所述硒粉与三氧化铼的质量比为200:1~300:1。本发明通过化学气相沉积方法将二硒化铼直接生长在基底电极上，来作为催化产氢的电极，大大提高了二硒化铼与电极之间的黏附力，同时提高了二硒化铼的催化性。另外，该方法的温度较低，工艺简单。

Fine-particle composite, process for producing the fine-particle composite, catalyst for solid polymer electrolyte fuel cell, and solid polymer electrolyte fuel cell

This invention provides a process for producing a fine-particle composite comprising a fine particle of a sulfide or a composite sulfide of one or more elements selected from molybdenum (Mo), rhodium (Rh), ruthenium (Ru), and rhenium (Re) and electroconductive fine particles. The production process comprises the step of preparing a solvent mixed liquid from an electroconductive carbon powder, one or more compounds containing an element selected from molybdenum (Mo), rhodium (Rh), ruthenium (Ru), and rhenium (Re), and a compound containing sulfur (S), and the step of subjecting the solvent mixed liquid to a hydrothermal reaction or a solvothermal reaction at a pressure and a temperature that bring water or the solvent to a supercritical state or a subcritical state.

Single-crystal fine powder of sulfide or sulfide complex and method for preparing the same

This invention provides a fine particle composite comprising fine powder of a sulfide or sulfide complex comprising a given element. The fine particle composite is obtained by a method for producing a fine particle composite comprising fine powder of a sulfide or sulfide complex comprising at least one element selected from the group consisting of molybdenum (Mo), rhodium (Rh), ruthenium (Ru), and rhenium (Re). Such method comprises steps of: preparing a solvent mixture from at least one compound containing an element selected from among molybdenum (Mo), rhodium (Rh), ruthenium (Ru), rhenium (Re), and sulfur (S); and subjecting the solvent mixture to a hydrothermal or solvothermal reaction. The resulting fine particle composite comprises fine particles of a sulfide or sulfide complex comprising at least one element selected from the group consisting of molybdenum (Mo), rhodium (Rh), ruthenium (Ru), and rhenium (Re).

Ruthenium recovery process

Ruthenium is stripped from a catalyst or electrode substrate by immersion in a fluoboric acid solution, converted to ruthenium oxide, and the ruthenium oxide is then converted to the alpha ruthenium trichloride for use in the preparation of fresh catalyst and/or electrodes.

Method for separation of chemically pure Os from metal mixtures

A method for separating an amount of osmium from a mixture containing the osmium and at least one other additional metal is provided. In particular, method for forming and trapping OsO 4 to separate the osmium from a mixture containing the osmium and at least one other additional metal is provided.

Process for separating rhenium from acid solutions containing molybden

La présente invention concerne un procédé direct de séparation de rhénium d'avec du molybdène et/ou d'autres impuretés en quantité parfois importante, contenus dans une solution de départ à acidité forte, étant entendu que le rhénium et le molybdène se présentent à l'intérieur de composés chimiques,caractérisé en ce qu'on effectue successivement: une fixation de Re par passage de la solution de départ sur un agent de fixation (résine ou solvant) du type amine tertiaire ou secondaire jusqu'à obtenir un agent de fixation chargé de la totalité du Re de la solution de départ et d'un résidu de Mo et/ou des autres impuretés, et un effluent exempt de Re contenant la majeure partie de Mo et/ou des autres impuretés; un lavage par reflux de l'agent de fixation chargé en Re par une solution acide contenant du Re pur pour déplacer le résidu de Mo et des autres impuretés et obtenir un agent de fixation ne comportant que du Re pur et un effluent contenant le Mo et les autres impuretés éluées de même qu'un solde de Re; une élution de l'agent de fixation chargé en Re pur par une solution basique pour obtenir une solution finale de perrhénate pur. The present invention relates to a direct process for the separation of rhenium from molybdenum and / or other impurities, sometimes in large quantities, contained in a starting solution with high acidity, it being understood that rhenium and molybdenum are present interior of chemical compounds, characterized in that successively: a fixation of Re by passing the starting solution over a fixing agent (resin or solvent) of the tertiary or secondary amine type until a fixing agent is obtained charged with the entire Re of the starting solution and a residue of Mo and / or the other impurities, and an effluent free of Re containing the major part of Mo and / or the other impurities; a reflux wash of the fixing agent loaded with Re with an acid solution containing pure Re to displace the residue of Mo and ...

Process for producing pure ammonium metallates

The present invention relates to a process for producing pure ammonium metallates of the metals W, Mo, V, Cr and Re, in which alkaline metal salt solutions are set at a pH in the range from 5 to 9 by reaction with CO2, said metal salt solutions are produced through an anion exchanger in carbonate form, whereupon the ion exchanger is produced under the metallate form besides the alkaline carbonate solution, the ion exchanger is then washed without alkali and then eluted by means of aqueous ammonia with the formation of ammonium metallate solutions and of the anion exchanger in the OH form, the anion exchanger being converted into the carbonate form by CO2 treatment and recycled.

Sod-imitating metal complexes

The present invention comprises a method for synthesizing metal complexes from macrocyclic polyazapyridinophanes, characterized in that said complexes imitate the enzyme superoxide dismutase (SOD). In addition, the present invention relates to the actual macrocyclic polyazapyridinophane metal compounds, to the metal complexes formed therefrom and to the use thereof in therapy for treating diseases in which the etiology is based on endogenous SOD activity anomalies, principally as anti-inflammatories, analgesics and antioxidants that protect against oxidative cell stress.

A method of rhenium disulfide nanometer sheet is prepared using liquid phase removing transfer

一种利用液相剥离转移制备二硫化铼纳米片的方法，涉及一种剥离转移制备二硫化铼纳米片的方法。本发明是要解决现有的化学气相沉积方法制备的二硫化铼薄膜在后继处理过程中出现的有机杂质吸附和氢氟酸污染的技术问题。本发明：一、多层ReS 2 薄膜的制备；二、无水乙醇表面预处理；三、剥离转移。本发明利用外延生长ReS 2 和云母基地的晶格失配残余应力和无水乙醇在ReS 2 表面润湿力，无水乙醇可以在ReS 2 膜层表面和层间充分润湿，从而产生润湿切应力，使得不同ReS 2 层分离，实现了大面积单层ReS 2 薄膜的制备和转移。

Recycling of superalloys with the aid of an alkali metal salt bath

Method for deeply purifying and removing potassium from ammonium perrhenate solution

本发明公开了一种高铼酸铵溶液深度净化除钾的方法，属于稀散金属分离提纯领域。本发明的高铼酸铵溶液深度净化除钾的方法，包括高铼酸铵溶液的制备、高铼酸铵溶液中钾离子的选择性深度吸附脱出、新型分子识别阳离子树脂的再生以及吸附净化后液蒸发结晶高纯高铼酸铵四个步骤，通过采用特殊的冠醚树脂作为钾离子吸附剂，并对高铼酸铵溶液深度净化除钾工艺及参数进行优化设计，从而能够高效选择性深度除钾，解决了目前高铼酸铵除钾难度大、工艺流程长、产品合格率低、生产成本高、有价元素铼损失高等问题，保证除钾后的溶液能够蒸发结晶生产99.99％或更高级别的高铼酸铵，满足了多种行业对高铼酸铵低杂质的要求。

Fine particle composite, method for producing the same, catalyst used for solid polymer fuel cell, and solid polymer fuel cell

This invention provides a fine particle composite comprising fine particles of a sulfide or sulfide complex comprising at least one element selected from the group consisting of molybdenum (Mo), rhodium (Rh), ruthenium (Ru), and rhenium (Re) and conductive fine particles via a step of preparing a solvent mixture from a compound containing conductive carbon powder, at least one compound containing an element selected from among molybdenum (Mo), rhodium (Rh), ruthenium (R), and rhenium (Re), and sulfur (S) and a step of conducting a hydrothermal or solvothermal reaction at a pressure and temperature that convert the solvent mixture into a supercritical or subcritical water or solvent.

Application containing uranium compound as scintillator

本发明公开了含铀化合物作为闪烁体的应用，含铀化合物为含铀有机无机杂化物或含铀无机物，含铀有机无机杂化物为含铀有机羧酸盐或含铀有机磷酸盐：含铀无机物为含铀非金属酸盐、含铀金属盐或含铀卤化物。本发明公开了含铀有机无机化合物或含铀无机物具有本征闪烁能力，为利用铀元素进行各类型化学组成与形态(有机无机、无机)的闪烁体开发提供了新理念。

Method of crystallization of compounds contained in gaseous state in composition of high-temperature fumarole volcanic gases, including rhenium, indium, germanium and platinum group of metals, on copper elements

FIELD: chemistry. SUBSTANCE: invention relates to a method of crystallization of compounds contained in the gaseous state in the composition of high-temperature fumarole volcanic gases, including rhenium, indium, germanium and the platinum group of metals, on copper elements. The method of crystallization of compounds contained in the gaseous state in the composition of high-temperature fumarole volcanic gases on a free-form substrate made of cathode and/or cast copper includes placing one or more substrate in a fire-proof chamber having internal through channel, which provides gas flow so that substrates, fixed on suspension system of fire-proof silica cords, do not contact to internal walls of the fire-proof chamber, a fumarole area surface and a fire-proof cover placed in the upper part of the chamber. The chamber with copper substrates fixed on it is set on the high-temperature fumarole area having temperature from 200ºC to 950ºC with a high-temperature fumarole gas debit from 1 to 15 m/s. The upper part of the chamber set on the fumarole area is covered with the fire-proof cover including a valve designed to the withdrawal of the fumarole gas went through the inner cavity of the chamber. The copper substrates are held in the chamber under high-temperature fumarole gases with following withdrawal of substrates with the crystalline mass that has grown on their surface containing indium, germanium, rhenium, platinum and palladium. EFFECT: invention is aimed at producing on copper substrates crystal outgrowth of rare metal and noble inclusions of Re, In, Ge, Pd, and Pt, the concentration of which is not inferior to industrial values. 3 cl, 1 tbl, 8 dwg

A method for recovering rhenium and other metals from rhenium-bearing materials

The present invention relates to a method of recovering rhenium (Re) and other metals from Re-bearing materials including, as an exemplary process, the steps: (i) adding Re-bearing materials into a leaching slurry; (ii) adjusting the pH of the slurry to obtain Re in soluble form in a metal salt solution and insoluble residues; (iii) filtering the metal salt solution to remove the insoluble residues; (iv) selectively precipitating Re from the metal salt solution; (v) filtering the Re precipitate from the metal salt solution to obtain a Re filtercake; (vi) formulating and drying the Re filtercake to obtain a Re sulfide product; (vii) combining the Re sulfide product with a Molybdenum (Mo) concentrate containing Re to obtain a Mo/Re concentrate; (viii) roasting the Mo/Re concentrate to obtain Mo oxide product and a flue gas containing Re; and (ix) treating the flue gas containing Re to obtain ammonium perrhennate.

Process for the preparation of a multimetal oxide material

A process for the hydrothermal preparation of Mo- and V-comprising multimetal oxide materials, substantially exclusively sources from the group consisting of oxides, hydrated oxides, oxygen acids and hydroxides being used as sources of the elemental constituents of the multimetal oxide material, and a portion of the sources comprising the elemental constituent contained with an oxidation number which is below its maximum oxidation number.

Method and apparatus for isolating a radioisotope

A method of isolating a radioisotope according to example embodiments may include vaporizing a source compound containing a first isotope and a second isotope of an element, wherein the second isotope may have at least one of therapeutic and diagnostic properties when used as a radiopharmaceutical. The vaporized source compound may be ionized to form charged particles of the first and second isotopes. The charged particles may be separated to isolate the particles of the second isotope. The isolated charged particles of the second isotope may be collected with an oppositely-charged collector. Accordingly, the isolated second isotope may be used to produce therapeutic and/or diagnostic radiopharmaceuticals having higher specific activity.

Method for producing aqueous solution of perrhenic acid from rhenium sulfide

A method allowing production of high-purity perrhenic acid from rhenium sulfide by applying pyrometallurgical process is provided. A method for producing an aqueous solution of perrhenic acid, comprising: 1) a step for performing a first roasting process of rhenium sulfide under an oxygen-containing gas to generate rhenium oxide and sulfur oxide, the sulfur oxide being gasified for discharge and the rhenium oxide being obtained as a roasted residue; 2) a step for performing a second roasting process of the roasted residue under an oxygen-containing gas to collect gasified rhenium oxide; 3) a step for cooling and solidifying the gasified rhenium oxide, or a step for dissolving the gasified rhenium oxide into water while water-cooling to obtain the aqueous solution of perrhenic acid; and 4) in case where the rhenium oxide is solidified, a step for dissolving the solidified rhenium oxide into water, or heating and gasifying the solidified rhenium oxide and then dissolving the gasified rhenium oxide into water, to obtain the aqueous solution of perrhenic acid.

Extraction process for recovery of rhenium

A process is disclosed wherein essentially all of the rhenium can be removed from an aqueous solution of molybdenum without the extraction of molybdenum using a particular solvent extraction solution. The extraction solution consists essentially of quaternary ammonium compound and at least about 50 percent by volume of a highly aromatic solvent which dissolves a quaternary ammonium-rhenium complex to the extent of at least 0.1 percent by volume selected from the group consisting of benzene and an aromatic solvent containing primarily lower alkyl benzenes having molecular weights of either 106, 120, 134 or 148 with minor amounts of relatively long chain aliphatic hydrocarbons containing greater than 8 carbon atoms and minor amounts of napthalene.

Fine-particle composite, process for producing fine-particle composite, catalyst for solid polymer electrolyte fuel cell, and solid polymer electrolyte fuel cell

通过包括由含有导电性碳粉末、选自钼(Mo)、铑(Rh)、钌(Ru)、铼(Re)中的元素的化合物的一种以上、和含有硫(S)的化合物制作溶剂混合液的工序、和使该溶剂混合液在形成为水或溶剂的超临界状态或亚临界状态的压力和温度下进行水热反应或溶剂热反应的工序，能够得到含有选自钼(Mo)、铑(Rh)、钌(Ru)、铼(Re)中的一种以上的元素的硫化物或复合硫化物的微粒子和导电性微粒子的微粒子复合材料。

Method for the production of multi-metal oxide masses

The invention relates to a method for the hydrothermal production of multi-metal masses, comprising Mo and V, using essentially exclusively sources from the group of oxides, oxide hydrates, oxy-acids and hydroxides as source of the elemental constituents of the multi-metal oxide masses and a part amount of the source of the included elemental constituents has an oxidation number below the maximum oxidation number thereof.

A method for recovering rhenium and other metals from rhenium-bearing materials

The present invention relates to a method of recovering rhenium (Re) and other metals from Re-bearing materials including, as an exemplary process, the steps: (i) adding Re-bearing materials into a leaching slurry; (ii) adjusting the pH of the slurry to obtain Re in soluble form in a metal salt solution and insoluble residues; (iii) filtering the metal salt solution to remove the insoluble residues; (iv) selectively precipitating Re from the metal salt solution; (v) filtering the Re precipitate from the metal salt solution to obtain a Re filtercake; (vi) formulating and drying the Re filtercake to obtain a Re sulfide product; (vii) combining the Re sulfide product with a Molybdenum (Mo) concentrate containing Re to obtain a Mo/Re concentrate; (viii) roasting the Mo/Re concentrate to obtain Mo oxide product and a flue gas containing Re; and (ix) treating the flue gas containing Re to obtain ammonium perrhennate.

Patent DE2021631A1

A kind of oxygen doping method of modifying of two-dimensional material

本发明提供了一种二维材料的氧掺杂改性方法。本发明提供的方法包括以下步骤：(1)将二维材料置于激光直写系统中，用定位系统找到待改性区域；(2)使用所述激光直写系统在步骤(1)所述待改性区域按照设定的图案进行激光直写，得到氧掺杂改性的二维材料。该方法通过利用定位系统精确定位二维材料的待改性区域，并按照图案对二维材料进行激光直写，可以实现对选定区域的氧掺杂改性，而不影响其他区域，该氧掺杂改性的方法精确度达到100nm；并且通过使用灰度图，根据所述灰度图的不同灰阶分别用不同能量的激光进行激光直写可实现不同掺杂位置具有不同的氧掺杂量，使得一个图形中的氧掺杂量可以连续变化，实现可控的梯度氧掺杂。

Process for isolating rhenium

Method for recycling rhenium from tungsten-rhenium alloy waste

本发明提供了一种从钨铼合金废料中回收铼的方法，包括以下步骤：一、对钨铼合金废料进行电化学溶解处理，得到含铼溶液；二、向含铼溶液中加入过量氯化钾，使含铼溶液中的铼与氯化钾发生沉淀反应生成KReO 4 沉淀，然后对所述KReO 4 沉淀进行重结晶处理，得到高纯KReO 4 。本发明工艺简单，不存在对比氧化挥发法中铼的收集问题，铼的回收率高。由于传统的氧化挥发法、硝石熔合‑离子交换法两种方法均是在高温条件下进行，相对而言，本发明的工艺能耗较低。

Composite porous matercal, process for production and separation of metallic

本发明的多孔复合材料包括无机多孔材料，且在该材料的孔中包含带有微孔的有机树脂。该多孔复合材料的表面积大于无机多孔材料的表面积。该多孔复合材料具有可与无机多孔材料相比的高形稳性，同时还表现出可与常用离子交换树酯或者螯合物树脂相比的高分离性能以及高吸附能力。因此，可有效地用作为各种化合物或者离子的吸附剂，以及气相色谱法或者液相色谱法的填充材料。

Method for preparing potassium perrhenate through back-extraction crystallization

本发明属于稀贵金属回收技术领域，具体涉及一种反萃取结晶制备高铼酸钾的方法。本方法采用该方法可简化工艺流程，降低能耗和试剂消耗，节省生产成本25％以上，并减少杂质离子的引入，提高粗产品纯度5％‑10％，铼产品纯度可达到95％以上，结晶时间缩短40％以上。

Method for producing aqueous solution of perrhenic acid from rhenium sulfide

조황화레늄으로부터 건식 프로세스를 사용하여 고순도의 과레늄산을 제조 가능한 방법을 제공한다. 1) 황화레늄에 대해 산소 함유 기체의 존재 하에서 제1 배소를 행하여, 산화레늄 및 유황 산화물을 생성시키고, 유황 산화물은 가스화하여 배출하고, 산화레늄을 배소 잔사로서 얻는 공정과, 2) 상기 배소 잔사에 대해 산소 함유 기체의 존재 하에서 제2 배소를 행하여, 가스화한 산화레늄을 회수하는 공정과, 3) 가스화한 산화레늄을 냉각하여 고화하는 공정, 또는 가스화한 산화레늄을 수냉하면서 수중에 용해시킴으로써 과레늄산 수용액을 얻는 공정과, 4) 산화레늄을 고화한 경우, 고화한 산화레늄을 수중에 용해시키거나, 또는 고화한 산화레늄을 가열하여 가스화한 후에 수중에 용해시킴으로써, 과레늄산 수용액을 얻는 공정을 포함하는 과레늄산 수용액의 제조 방법. It provides a process by which a high purity perrhenic acid can be produced using a dry process from boranylated rhenium. 1) performing a first roasting in the presence of an oxygen-containing gas for rhenium sulfide to produce rhenium oxide and sulfur oxide, gasifying and discharging the sulfur oxide to obtain rhenium oxide as a roasting residue, and 2) And a step of cooling the gasified rhenium oxide to solidify it, or a step of cooling the gasified rhenium oxide into water and dissolving it in water while cooling it, (4) a step of obtaining a rhenium acid aqueous solution by dissolving the solidified rhenium oxide in water when the rhenium oxide is solidified, or by heating the solidified rhenium oxide to be gasified and then dissolving in water, Lt; RTI ID = 0.0 &gt; 1, &lt; / RTI &gt;

Layer-by-layer sorting of rhenium disulfide via high-density isopycnic density gradient ultracentrufugation

Separation of rhenium disulfide nanomaterials and related fluid density gradient media.

Rhenium sulfide nanotube material and method of manufacture

Ferroelectric material, method of manufacturing the same, semiconductor memory, and method of manufacturing the same

A ferroelectric material having a basic structure of REMnO3, said ferroelectric material comprises RE and Mn one of which is contained in excess of the other to a limit of 20 at. % or the ferroelectric material is further added with a 4-valence element. Also, a method of forming a ferroelectric material, comprises decreasing an oxygen partial pressure within a growth reactor such as a vacuum deposition reactor, and forming a film on a film-forming surface of a substrate (4) while blowing an oxidizing source thereto. This structure provides a ferroelectric material low in leak current and improved in ferroelectric characteristics. Where using the material for a semiconductor memory device, its characteristics can be improved.

Process for producing pure ammonium metallates

The present invention relates to a process for the production of pure ammonium metallates of the metals W, Mo, V, Cr and Re, wherein alkaline metal salt solutions are adjusted to a pH value in the range from 5 to 9 by reaction with CO 2 , these metal salt solutions are passed through an anion exchanger in carbonate form, wherein, in addition to the alkali metal carbonate solution, the metallate form of the ion exchanger is formed, the ion exchanger is then washed until free of alkali and is then eluted by means of aqueous ammonia to form ammonium metallate solutions and the anion exchanger in the OH form, wherein the anion exchanger is converted into the carbonate form by means of CO 2 treatment and is recycled.

Preparation method of rhenium hexafluoride

本发明涉及一种六氟化铼的制备方法，属于氟化工技术领域。该方法先通过调控氟化反应条件，使铼粉和三氟化氮主要生成六氟化铼和七氟化铼的混合物，生成其他价态铼氟化物的歧化反应基本可以避免；再通过调控还原反应条件，使七氟化铼与铼粉反应生成六氟化铼，避免七氟化铼和六氟化铼被还原成更低价态的铼氟化物。本发明所述方法操作简单、安全经济、合成转化率高，而且所制备的六氟化铼的纯度高于90wt％。

Method of recovery of valuable metals from superalloys (versions)

FIELD: metallurgy. SUBSTANCE: proposed method consists in valuable metals are decomposed in salt melt containing 60-95 wt % of NaOH and 5-40 wt % of Na 2 SO 4 . Then, melt decomposition product is converted into solid phase by cooling to room temperature. After cooling, minced melt decomposition product is converted in water at temperature lower than 80°C to produce water suspension and water fraction is separated by filtration for components to be extracted therefrom. EFFECT: higher efficiency of extraction. 22 cl, 1 dwg, 3 tbl

The recovery method of rhenium, improve from the method for selective recovery rhenium in the solution containing rhenium and other metals and in the solution containing rhenium and other metals rhenium containing ratio method

本发明提供一种能够用简便的方法在更短时间内从含有铼的溶液中分离铼的方法。另外，本发明还提供一种从含有铼和其它金属的溶液中选择性回收铼的方法。本发明所使用的回收铼的方法包括：添加工序，向含有高铼酸根离子的溶液中添加给电子体试剂及酮化合物，所述给电子体试剂为脂肪族仲醇或脂肪族仲硫醇；紫外线照射工序，通过对经过了上述添加工序的上述溶液照射紫外线，使该溶液中含有的高铼酸根离子的还原物析出；以及分离收集工序，从上述溶液中分离收集通过上述紫外线照射工序而析出的高铼酸根离子的还原物。

A composite porous material, process for production and separation of metallic element

Industrial rhenium extraction process

Rhenium sulfide particles and microwave assisted process for their preparation

Provided is a process for the preparation of particles comprising rhenium (VII) sulfide, which process comprises providing a reaction solution comprising perrhenic acid or a salt thereof, a Bronsted acid other than perrhenic acid and a sulfide source, and heating the reaction solution comprising perrhenic acid or a salt thereof, a Bronsted acid other than perrhenic acid, and a sulfide source by exposure to microwave radiation to convert the perrhenic acid or the salt thereof to particles comprising rhenium (VII) sulfide. As a further embodiment, composition are provided which comprise a plurality of particles comprising rhenium (VII) sulfide, said particles having a volume average particle size, of 0.05 to 5 µm, a unimodal particle size distribution and a polydispersity Ð in the range of 1.0 to 2.5.

Patent FR2088287A1

Electro-oxidative method for the recovery of molybdenum from sulfide ores

This invention relates to a method for the dissolution of molybdenum and rhenium values in a sulfide-type source. These values are placed in a soluble and available form by pulverizing the source in a aqueous salt solution and electro-oxidizing it in an electrolytic cell.

Selective extraction of rhenium from aqueous sulfuric acid solutions

The present invention relates to the selective extraction of rhenium metal from aqueous sulfuric acid solutions. More particularly, it relates to the selective extraction of rhenium metal from sulfuric acid leach solutions, resulting from the leaching of spent petroleum reforming catalysts, by the use of tertiary phosphine oxide extraction compounds.

Rhemium extraction process

1390593 Recovering rhenium R J HEVIA and L SOTO-KREBS 9 Feb 1973 6479/73 Heading C1A Re is recovered from roaster gas containing Re 2 O 7 by wet filtering to form aqueous HReO 4 . Preferably, the gas is first wet scrubbed in a Venturi scrubber and then wet filtered, liquor from the wet filtering is recycled to the wet scrubbing and optionally also to the wet filtering, and liquor from the wet scrubbing is partly recycled and partly drawn off as product. Alternatively, the gas may be wet filtered directly in two or more steps, the liquor from each step being recycled to the same or preceding step. Filtering may be effected using a vertically disposed woven sleeve made of metal or synthetic polymer, the gas passing downwardly inside and through the sleeve and water being sprayed at the top. The gas may be obtained by roasting Mo or Cu sulphide concentrates and separating the dust.

Process for producing high purity rhenium compounds

Rhenium recovery

There is provided a hydrometallurgical process of recovering rhenium values from mixtures thereof with other met-al values in which the rhenium values constitute a minority amount, for example super-alloys, which comprises subjecting the mixture to strongly oxidizing acid conditions, preferably an aqueous mixture of hydrochloric acid and nitric acid, so as to form perrhenate species of at least the major proportion of the rhenium values in the mixture, dissolving the perrhenate species and oth-er soluble metal species in aqueous solution, removing insoluble metal species from the aqueous solution, and isolating the rheni-um species from the solution.

Process for isolating rhenium

A process for elution of rhenium adsorbed on strongly basic ion-exchange resins by means of highly concentrated aqueous hydrochloric acid solution is described, in which the ion-exchange resin is treated with aqueous solution containing an oxidising agent.

Rhenium pentacarbonyl hydride and its production

Rhenium pentacarbonyl hydride H.Re(CO)5 is prepared by reacting rhenium pentacarbonyl with an alkali metal amalgam, or a finely divided alkali metal in the presence of an inert solvent, or a solution of an alkali metal in liquid ammonia, to form an alkali metal pentacarbonyl rhenate which is treated with a non-oxidizing acid or acid salt. Alternatively, the solution of alkali metal pentacarbonyl rhenate prepared by the same reaction is treated with a tri-ortho-phenanthroline nickel (II) salt, or with the cation complex [Cr(C6H6)2]+ or [Co(C5H5)2]+, to precipitate a complex salt which is separated and treated with a non-oxidizing acid or acid salt to obtain the pentacarbonyl hydride. Inert solvents may be tetrahydrofuran, furfural, diethyl ether, dimethyl glycol ether, or dioxan. The reaction may be effected at 15 DEG -80 DEG C. and superatmospheric pressure. The acid may be phosphoric, and the alkali metal (Li, Na, K, Rb, and Cs are all specified) may be of size 0,1 mm. and below.

Method for separating rhenium

本发明描述了通过高浓度含水盐酸溶液洗脱吸附在强碱性离子交换树脂上的铼的方法,其中离子交换树脂用含有氧化剂的含水溶液处理。