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公开(公告)号：US08795509B2
公开(公告)日：2014-08-05
申请号：US12996016
申请日：2009-04-29
CPC分类号： C01G47/00 , C01G47/003 , C01P2006/80 , C22B61/00 , H01J35/08
摘要： A process for preparing a pure ammonium perrhenate includes producing a first aqueous suspension containing an ammonium perrhenate. A stoichiometric amount of a nitric acid is added to the first aqueous suspension so as to produce a second suspension. The second suspension is introduced into a cathode space of an electrolysis cell. The electrolysis cell is divided by a cation-exchange membrane into the cathode space and an anode space. The nitric acid is cathodically reduced to a nitrous acid in the cathode space by applying an electric potential. The nitrous acid is reacted with ammonium ions of the ammonium perrhenate so as to form an aqueous perrhenic acid. Potassium ions are removed from the aqueous perrhenic acid. At least a stoichiometric amount of ammonia is added to the aqueous perrhenic acid so as to produce the pure ammonium perrhenate.
摘要翻译： 制备纯高铼酸铵的方法包括制备含有高铼酸铵的第一含水悬浮液。 向第一水性悬浮液中加入化学计量的硝酸，以产生第二悬浮液。 将第二悬浮液引入电解池的阴极空间。 电解池被阳离子交换膜分成阴极空间和阳极空间。 通过施加电势，硝酸在阴极空间中被阴极还原成亚硝酸。 亚硝酸与高铼酸铵的铵离子反应，形成高铼酸水溶液。 从高铼酸水溶液中除去钾离子。 将至少一种化学计量的氨加入到高铼酸水溶液中，以产生纯高铼酸铵。
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公开(公告)号：US20110123709A1
公开(公告)日：2011-05-26
申请号：US12996016
申请日：2009-04-29
CPC分类号： C01G47/00 , C01G47/003 , C01P2006/80 , C22B61/00 , H01J35/08
摘要： A process for preparing a pure ammonium perrhenate includes producing a first aqueous suspension containing an ammonium perrhenate. A stoichiometric amount of a nitric acid is added to the first aqueous suspension so as to produce a second suspension. The second suspension is introduced into a cathode space of an electrolysis cell. The electrolysis cell is divided by a cation-exchange membrane into the cathode space and an anode space. The nitric acid is cathodically reduced to a nitrous acid in the cathode space by applying an electric potential. The nitrous acid is reacted with ammonium ions of the ammonium perrhenate so as to form an aqueous perrhenic acid. Potassium ions are removed from the aqueous perrhenic acid. At least a stoichiometric amount of ammonia is added to the aqueous perrhenic acid so as to produce the pure ammonium perrhenate.
摘要翻译： 制备纯高铼酸铵的方法包括制备含有高铼酸铵的第一含水悬浮液。 向第一水性悬浮液中加入化学计量的硝酸，以产生第二悬浮液。 将第二悬浮液引入电解池的阴极空间。 电解池被阳离子交换膜分成阴极空间和阳极空间。 通过施加电势，硝酸在阴极空间中被阴极还原成亚硝酸。 亚硝酸与高铼酸铵的铵离子反应，形成高铼酸水溶液。 从高铼酸水溶液中除去钾离子。 将至少一种化学计量的氨加入到高铼酸水溶液中，以产生纯高铼酸铵。
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13.发明授权公开(公告)号：US08052956B2
公开(公告)日：2011-11-08
申请号：US11579775
申请日：2005-04-28
申请人： Sven Albrecht , Armin Olbrich , Michael Reiss , Frank Schrumpf , Juliane Meese-Marktscheffel , Uwe Kutzler
发明人： Sven Albrecht , Armin Olbrich , Michael Reiss , Frank Schrumpf , Juliane Meese-Marktscheffel , Uwe Kutzler
CPC分类号： C01G41/02 , C01G41/00 , C01P2004/32 , C01P2004/61 , C01P2006/10 , C22B34/36 , Y10T428/2982
摘要： Process for the production of a powdered spherical tungstic acid by acidification of an aqueous alkaline tungstate solution with mineral acid at elevated temperature, preferably in a continuous stirred tank or a cascade of at least 2 continuous stirred tanks, and tungstic acid obtainable in this way, which is characterized by a high bulk density and spherical morphology.
摘要翻译： 通过酸性碱性钨酸盐水溶液与无机酸在升高的温度下酸化，优选在连续搅拌槽或至少2个连续搅拌槽的级联中制备粉状球状钨酸的方法和以这种方式可得到的钨酸， 其特征在于高堆积密度和球形形态。
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14.发明申请公开(公告)号：US20070224096A1
公开(公告)日：2007-09-27
申请号：US11579775
申请日：2005-04-28
申请人： Sven Albrecht , Armin Olbrich , Michael Reib , Frank Schrumpf , Juliane Meese-Marktscheffel , Uwe Kutzler
发明人： Sven Albrecht , Armin Olbrich , Michael Reib , Frank Schrumpf , Juliane Meese-Marktscheffel , Uwe Kutzler
CPC分类号： C01G41/02 , C01G41/00 , C01P2004/32 , C01P2004/61 , C01P2006/10 , C22B34/36 , Y10T428/2982
摘要： Process for the production of a powdered spherical tungstic acid by acidification of an aqueous alkaline tungstate solution with mineral acid at elevated temperature, preferably in a continuous stirred tank or a cascade of at least 2 continuous stirred tanks, and tungstic acid obtainable in this way, which is characterised by a high bulk density and spherical morphology.
摘要翻译： 通过酸性碱性钨酸盐水溶液与无机酸在升高的温度下酸化，优选在连续搅拌槽或至少2个连续搅拌槽的级联中制备粉状球状钨酸的方法和以这种方式可得到的钨酸， 其特征在于高堆积密度和球形形态。
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15.发明授权公开(公告)号：US08454931B2
公开(公告)日：2013-06-04
申请号：US13241750
申请日：2011-09-23
申请人： Sven Albrecht , Armin Olbrich , Michael Reiβ , Frank Schrumpf , Juliane Meese-Marktscheffel , Uwe Kutzler
发明人： Sven Albrecht , Armin Olbrich , Michael Reiβ , Frank Schrumpf , Juliane Meese-Marktscheffel , Uwe Kutzler
CPC分类号： C01G41/02 , C01G41/00 , C01P2004/32 , C01P2004/61 , C01P2006/10 , C22B34/36 , Y10T428/2982
摘要： Process for the production of a powdered spherical tungstic acid by acidification of an aqueous alkaline tungstate solution with mineral acid at elevated temperature, preferably in a continuous stirred tank or a cascade of at least 2 continuous stirred tanks, and tungstic acid obtainable in this way, which is characterized by a high bulk density and spherical morphology.
摘要翻译： 通过酸性碱性钨酸盐水溶液与无机酸在升高的温度下酸化，优选在连续搅拌槽或至少2个连续搅拌槽的级联中制备粉状球状钨酸的方法和以这种方式可得到的钨酸， 其特征在于高堆积密度和球形形态。
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16.发明申请公开(公告)号：US20120045647A1
公开(公告)日：2012-02-23
申请号：US13241750
申请日：2011-09-23
申请人： Sven Albrecht , Armin Olbrich , Michael Reib , Frank Schrumpf , Juliane Meese-Marktscheffel , Uwe Kutzler
发明人： Sven Albrecht , Armin Olbrich , Michael Reib , Frank Schrumpf , Juliane Meese-Marktscheffel , Uwe Kutzler
CPC分类号： C01G41/02 , C01G41/00 , C01P2004/32 , C01P2004/61 , C01P2006/10 , C22B34/36 , Y10T428/2982
摘要： Process for the production of a powdered spherical tungstic acid by acidification of an aqueous alkaline tungstate solution with mineral acid at elevated temperature, preferably in a continuous stirred tank or a cascade of at least 2 continuous stirred tanks, and tungstic acid obtainable in this way, which is characterised by a high bulk density and spherical morphology.
摘要翻译： 通过酸性碱性钨酸盐水溶液与无机酸在升高的温度下酸化，优选在连续搅拌槽或至少2个连续搅拌槽的级联中制备粉状球状钨酸的方法和以这种方式可得到的钨酸， 其特征在于高堆积密度和球形形态。
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公开(公告)号：US06936090B2
公开(公告)日：2005-08-30
申请号：US10288908
申请日：2002-11-06
CPC分类号： C01G47/003 , C22B3/24 , C22B11/048 , Y02P10/214 , Y02P10/234
摘要： 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 oxidizing agent.
摘要翻译： 描述了通过高浓度盐酸水溶液洗脱强碱性离子交换树脂上的铼的方法，其中用含有氧化剂的水溶液处理离子交换树脂。
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18.发明授权公开(公告)号：US07799184B2
公开(公告)日：2010-09-21
申请号：US11558295
申请日：2006-11-09
CPC分类号： C22B3/045 , C22B7/006 , C22B11/042 , C22B34/36 , Y02P10/214 , Y02P10/234
摘要： Process for the electrochemical decomposition of precursors in powder form by introducing a powder batch between two electrodes of an electrolysis cell, electrodes being designed to be liquid-permeable, and the electrolyte flowing through the powder batch perpendicularly to the electrode surfaces, and electrolysis cell suitable therefor, which is essentially characterized in that at least one electrode has a structure which consists of a supporting pierced plate (5), an electrode plate (3) provided with perforations, and a filter cloth (4) arranged between the supporting pierced plate (5) and the electrode plate (3), and in that the cathode (6) is shielded from the cell by means of a liquid-permeable separator (7).
摘要翻译： 通过在电解池的两个电极之间引入粉末批料，设计为液体可渗透的电极以及垂直于电极表面流过粉末批料的电解质，以及电解槽适用于电化学分解粉末形式的前体的方法 其特征在于，至少一个电极具有由支撑穿孔板（5），设置有穿孔的电极板（3）和布置在支撑穿孔板（4）之间的滤布 5）和电极板（3），并且阴极（6）通过透液分离器（7）与电池屏蔽。
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19.发明申请公开(公告)号：US20070256931A1
公开(公告)日：2007-11-08
申请号：US11558295
申请日：2006-11-09
IPC分类号： C25B9/00
CPC分类号： C22B3/045 , C22B7/006 , C22B11/042 , C22B34/36 , Y02P10/214 , Y02P10/234
摘要： Process for the electrochemical decomposition of precursors in powder form by introducing a powder batch between two electrodes of an electrolysis cell, electrodes being designed to be liquid-permeable, and the electrolyte flowing through the powder batch perpendicularly to the electrode surfaces, and electrolysis cell suitable therefor, which is essentially characterized in that at least one electrode has a structure which consists of a supporting pierced plate (5), an electrode plate (3) provided with perforations, and a filter cloth (4) arranged between the supporting pierced plate (5) and the electrode plate (3), and in that the cathode (6) is shielded from the cell by means of a liquid-permeable separator (7).
摘要翻译： 通过在电解池的两个电极之间引入粉末批料，设计为液体可渗透的电极以及垂直于电极表面流过粉末批料的电解质，以及电解槽适用于电化学分解粉末形式的前体的方法 其特征在于，至少一个电极具有由支撑穿孔板（5），设置有穿孔的电极板（3）和布置在支撑穿孔板（4）之间的滤布 5）和电极板（3），并且阴极（6）通过透液分离器（7）与电池屏蔽。
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公开(公告)号：US07217366B2
公开(公告)日：2007-05-15
申请号：US10935563
申请日：2004-09-07
CPC分类号： C01G39/00 , C22B3/42 , C22B34/34 , Y02P10/234
摘要： A process for reducing the content of alkali metal impurities (e.g., potassium) in ammonium metallate solutions is described. The process involves subjecting a feed solution containing ammonium metallate and alkali metal impurities to membrane filtration. The membrane filtration results in the formation of a retentate having a reduced level alkali metal relative to the feed solution, and a permeate containing substantially the balance of alkali metal. The permeate may also be further treated, to remove alkali metal there from, by passage through a cation exchange column, thereby forming a cation exchange treated permeate that may be combined with the retentate of the membrane filtration step.
摘要翻译： 描述了一种降低金属铵盐溶液中碱金属杂质（例如钾）含量的方法。 该方法包括使含有金属铵盐和碱金属杂质的进料溶液进行膜过滤。 膜过滤导致相对于进料溶液形成具有降低的碱金属含量的渗余物，和形成基本上余量的碱金属的渗透物。 也可以进一步处理渗透物，以通过阳离子交换柱除去碱金属，从而形成阳离子交换处理的渗透物，其可与膜过滤步骤的渗余物组合。
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