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    Ammonium dodecamolybdomolybdate and method of making
    1.
    发明授权
    Ammonium dodecamolybdomolybdate and method of making 失效
    十二钼多钼酸铵及其制备方法

    公开(公告)号：US07300492B2

    公开(公告)日：2007-11-27

    申请号：US10931910

    申请日：2004-09-01

    申请人： Raj P. Singh ,  Thomas A. Wolfe ,  David L. Houck

    发明人： Raj P. Singh ,  Thomas A. Wolfe ,  David L. Houck

    IPC分类号： B22F9/18 ,  B22F9/20 ,  B22F9/22 ,  C01B31/34

    CPC分类号： C01G39/00 ,  C01P2002/72 ,  C01P2002/74 ,  C01P2002/86

    摘要： A novel molybdenum compound, ammonium dodecamolybdomolybdate (AMM), is described which may be used in the manufacture of molybdenum metal and molybdenum carbide powders. The molybdenum compound is a dodecaheteropoly acid salt having a Keggin-type structure wherein molybdenum resides in both the hetero as well as peripheral atomic positions. The novel compound has the general formula (NH4)2Mo12MoO40·6H2O. Because of its low solubility, the compound can be crystallized efficiently and at a high purity from ammonium molybdate solutions.

    摘要翻译： 描述了一种新的钼化合物，十二烷基多钼酸铵（AMM），其可用于制造钼金属和碳化钼粉末。 钼化合物是具有Keggin型结构的十二杂多酸盐，其中钼位于杂原子和外周原子位置。 该新型化合物具有通式（NH 4）2 Mo 12，MoO 40，...，6 H 2 O。 由于溶解度低，化合物可以有效地从钼酸铵溶液中高纯度地结晶出来。

    Ammonium dodecamolybdomolybdate and method of making
    2.
    发明授权
    Ammonium dodecamolybdomolybdate and method of making 失效
    十二钼多钼酸铵及其制备方法

    公开(公告)号：US06793907B1

    公开(公告)日：2004-09-21

    申请号：US10207503

    申请日：2002-07-29

    申请人： Raj P. Singh ,  Thomas A. Wolfe ,  David L. Houck

    发明人： Raj P. Singh ,  Thomas A. Wolfe ,  David L. Houck

    IPC分类号： C01G3902

    CPC分类号： C01G39/00 ,  C01P2002/72 ,  C01P2002/74 ,  C01P2002/86

    摘要： A novel molybdenum compound, ammonium dodecamolybdomolybdate (AMM), is described which may be used in the manufacture of molybdenum metal and molybdenum carbide powders. The molybdenum compound is a dodecaheteropoly acid salt having a Keggin-type structure wherein molybdenum resides in both the hetero as well as peripheral atomic positions. The novel compound has the general formula (NH4)2Mo12MoO40.6H2O. Because of its low solubility, the compound can be crystallized efficiently and at a high purity from ammonium molybdate solutions.

    摘要翻译： 描述了一种新的钼化合物，十二烷基多钼酸铵（AMM），其可用于制造钼金属和碳化钼粉末。 钼化合物是具有Keggin型结构的十二杂多酸盐，其中钼位于杂原子和外周原子位置。 该新化合物具有通式（NH 4）2 Mo 12 MoO 40·6H 2 O。 由于溶解度低，化合物可以有效地从钼酸铵溶液中高纯度地结晶出来。

    Method for making a highly pure tantalum compound
    5.
    发明授权
    Method for making a highly pure tantalum compound 失效
    制造高纯钽化合物的方法

    公开(公告)号：US06010676A

    公开(公告)日：2000-01-04

    申请号：US928369

    申请日：1997-09-12

    申请人： Raj P. Singh ,  Michael J. Miller

    发明人： Raj P. Singh ,  Michael J. Miller

    IPC分类号： C01G35/00 ,  C22B34/24 ,  C01G35/02

    CPC分类号： C01G35/00 ,  C22B34/24 ,  C01P2002/82 ,  C01P2002/89 ,  C01P2006/12 ,  C01P2006/80

    摘要： Highly pure tantalum compounds are made by slurrying hydrated ammonium tantalum oxide or tantalum hydroxide with concentrated sulfuric acid followed by dissolution with concentrated hydrofluoric acid. After diluting the concentrated acidic solution with water, a soluble potassium compound is added to precipitate a highly pure potassium fluorotantalate. Further steps are used to convert the highly pure potassium fluorotantalate into a highly pure tantalum oxide.

    摘要翻译： 高纯钽化合物是通过用浓硫酸将氧化钽或氢氧化钽水合，然后用浓氢氟酸溶解制成的。 用水稀释浓缩的酸性溶液后，加入可溶性钾化合物以沉淀出高纯度的氟铁钙钾。 使用进一步的步骤将高纯度的氟碳酸钾转化成高纯度的氧化钽。

    Method for the dissolution and purification of tantalum pentoxide
    8.
    发明授权
    Method for the dissolution and purification of tantalum pentoxide 失效
    溶解和纯化五氧化二钽的方法

    公开(公告)号：US5635146A

    公开(公告)日：1997-06-03

    申请号：US565334

    申请日：1995-11-30

    申请人： Raj P. Singh ,  Michael J. Miller

    发明人： Raj P. Singh ,  Michael J. Miller

    IPC分类号： C01G35/00

    CPC分类号： C01G35/00 ,  C01P2006/12 ,  C01P2006/80

    摘要： A method is disclosed for the dissolution and purification of tantalum pentoxide. The impure tantalum pentoxide is reacted with a potassium-containing compound to form potassium tantalate. The potassium tantalate is optionally slurried with sulfuric acid and dissolved in an HF medium. The solution is suitable for purification by conventional ion exchange or solvent extraction methods. A potassium fluorotantalate precipitate may also be formed by adding KCl to the solution. The fluorotantalate precipitate may be further processed into a pure tantalum pentoxide by suspending the precipitate in an aqueous solution optionally containing a chelating agent and adding ammonium hydroxide to form ammonium tantalum oxide which can then be converted to tantalum pentoxide by calcining at high temperature.

    摘要翻译： 公开了五氧化二钽的溶解和纯化的方法。 将不纯的五氧化二钽与含钾化合物反应形成钽酸钾。 钽酸钾任选用硫酸浆化并溶解在HF介质中。 该溶液适用于通过常规离子交换或溶剂萃取方法进行纯化。 也可以通过向溶液中加入KCl来形成氟钽酸钾沉淀。 通过将沉淀物悬浮在任选含有螯合剂的水溶液中并加入氢氧化铵以形成氧化钽铵，可以将氟代钽酸盐沉淀物进一步加工成纯的五氧化二钽，然后可以通过在高温下煅烧将其转化为五氧化二钽。

    Phosphor paste compositions
    9.
    发明授权
    Phosphor paste compositions 失效
    磷糊组合物

    公开(公告)号：US06660184B2

    公开(公告)日：2003-12-09

    申请号：US10021919

    申请日：2001-12-13

    申请人： Raj P. Singh ,  Robert G. Mendenhall ,  Diane C. Seymour

    发明人： Raj P. Singh ,  Robert G. Mendenhall ,  Diane C. Seymour

    IPC分类号： C09K1102

    CPC分类号： C09K11/595 ,  C09K11/02 ,  C09K11/025 ,  C09K11/7734 ,  C09K11/7797

    摘要： A phosphor paste composition for plasma display panels (PDP) is provided which comprises a phosphor dispersed in an organic paste comprising a solvent, a binder, at least one dispersant comprising stearic acid, and a plasticizer. The paste compositions are very stable and have desirable screen-printing properties. In addition, the phosphor contained in the paste retains a high percentage of its initial brightness following binder burn-out.

    摘要翻译： 提供了一种用于等离子体显示面板（PDP）的荧光体浆料组合物，其包括分散在包含溶剂，粘合剂，至少一种包含硬脂酸的分散剂和增塑剂的有机浆料中的荧光体。 糊料组合物非常稳定并具有期望的丝网印刷性能。 此外，糊料中包含的荧光体在粘合剂烧尽后保持其初始亮度的高百分比。

    Method for purifying a tantalum compound using a fluoride compound and sulfuric acid
    10.
    发明授权
    Method for purifying a tantalum compound using a fluoride compound and sulfuric acid 失效
    使用氟化物和硫酸来净化钽化合物的方法

    公开(公告)号：US06383459B1

    公开(公告)日：2002-05-07

    申请号：US09652517

    申请日：2000-08-31

    申请人： Raj P. Singh ,  Michael J. Miller

    发明人： Raj P. Singh ,  Michael J. Miller

    IPC分类号： C01G3500

    CPC分类号： C01G35/00 ,  C01P2006/12 ,  C01P2006/80 ,  C01P2006/82

    摘要： A direct dissolution method for the purification of technical grade hydrated ammonium tantalum oxide (HATO), (NH4)2−xHxTa2O6.nH2O), and related compounds such as tantalum hydroxide and tantalum oxide is described. The method preferably uses ammonium bifluoride as fluoride source in place of the hydrofluoric acid used in the conventional methods. Other fluoride compounds such as NaF, KF, and CaF2 may be used.

    摘要翻译： 描述了用于纯化工业级水合氧化钽（HATO），（NH 4）2-xH x Ta 2 O 6·nH 2 O）的直接溶解方法以及相关化合物如氢氧化钽和氧化钽。 该方法优选使用氟化铵作为氟化物源代替常规方法中使用的氢氟酸。 可以使用其它氟化物，例如NaF，KF和CaF 2。