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    Process for preparing crystals of anhydrous sodium sulfide
    2.
    发明授权
    Process for preparing crystals of anhydrous sodium sulfide 失效
    制备无水硫酸钠晶体的方法

    公开(公告)号：US5173088A

    公开(公告)日：1992-12-22

    申请号：US357497

    申请日：1989-05-26

    申请人： Kannosuke Maeda ,  Yoshio Aoyama

    发明人： Kannosuke Maeda ,  Yoshio Aoyama

    IPC分类号： C01B17/38

    CPC分类号： C01B17/38 ,  C01P2006/33 ,  C01P2006/80 ,  C01P2006/82

    摘要： Disclosed is a process for preparing crystals of anhydrous sodium sulfide, the process being characterized in that the process comprises the steps of heating crystals of polyhydrate of sodium sulfide under a pressure of about 500 torr or less at a temperature varying not more than .+-.about 10.degree. C. from the phase transition point between polyhydrate crystals and monohydrate crystals of sodium sulfide for about 2 hours or longer and further heating the monohydrate under atmospheric or reduced pressure at about 90.degree. to about 200.degree. C. for about 2 hours or longer.

    LITHIUM SULFIDE PRODUCTION METHOD
    4.
    发明公开
    LITHIUM SULFIDE PRODUCTION METHOD 审中-公开

    公开(公告)号：US20230150818A1

    公开(公告)日：2023-05-18

    申请号：US17988669

    申请日：2022-11-16

    申请人： Solid Power Operating, Inc.

    发明人： Samuel OBERWETTER ,  Brian E. FRANCISCO ,  Sean P. CULVER ,  Ilya LISENKER

    IPC分类号： C01B17/38 ,  C01B17/36 ,  H01M10/0562

    CPC分类号： C01B17/38 ,  C01B17/36 ,  H01M10/0562 ,  C01P2006/82 ,  H01M2300/0068

    摘要： A process for producing a low-cost water-reactive sulfide material includes reacting a substantially anhydrous first alkali metal salt, a substantially anhydrous first sulfide compound, and a substantially anhydrous first alkali metal hydrosulfide compound in a substantially anhydrous polar solvent, providing differential solubility for a substantially high solubility second sulfide and a substantially low solubility second alkali metal salt, and forming a mixture of the high solubility second sulfide, a second alkali metal hydrosulfide, and the low solubility second alkali metal salt; removing the low solubility second alkali metal salt to isolate the supernatant including the second sulfide, and separating the polar solvent from the second sulfide and the second alkali metal hydrosulfide followed by heating to produce the second sulfide. The present disclosure provides a scalable process for production of a high purity alkali metal sulfide that is essentially free of undesired contaminants.

    Method for the production of anhydrous alkali metal sulfide and alkali metal sulfide solution
    6.
    发明授权
    Method for the production of anhydrous alkali metal sulfide and alkali metal sulfide solution 有权
    生产无水碱金属硫化物和碱金属硫化物溶液的方法

    公开(公告)号：US06337062B1

    公开(公告)日：2002-01-08

    申请号：US09512456

    申请日：2000-02-24

    申请人： Iwao Akiba

    发明人： Iwao Akiba

    IPC分类号： C01B1722

    CPC分类号： C01B17/22 ,  C01B17/38 ,  C01P2006/80 ,  C01P2006/82

    摘要： A method for producing an anhydrous alkali metal sulfide, which entails a) bubbling a solution of an alkali metal hydroxide in an aprotic organic solvent, such as N-alkylcaprolactam or N-alkylpyrrolidone, with hydrogen sulfide gas at a temperature between 50 and 250° C., thereby forming a product containing alkali metal hydrosulfide, and then b) terminating the hydrogen sulfide introduction after the system has come to contain substantially no water remaining therein, and heating the system, thereby effecting dehydrosulfurization to form the alkali metal sulfide.

    摘要翻译： 一种无水碱金属硫化物的制造方法，其特征在于：a）在50〜250℃的温度下，用氢化硫气体将碱金属氢氧化物溶解在非质子性有机溶剂如N-烷基己内酰胺或N-烷基吡咯烷酮中， 从而形成含有碱金属氢硫化物的产物，然后b）在系统基本上不含有水之后终止硫化氢引入，并加热该体系，从而进行脱硫硫化以形成碱金属硫化物。

    Process for producing anhydrous alkali sulfide
    8.
    发明申请
    Process for producing anhydrous alkali sulfide 失效
    无水碱硫化物生产工艺

    公开(公告)号：US20040109818A1

    公开(公告)日：2004-06-10

    申请号：US10714382

    申请日：2003-11-14

    发明人： Hans Christian Alt ,  Andreas Golz ,  Alfred Alig

    IPC分类号： C01B017/22 ,  B01D050/00

    CPC分类号： C01B17/38 ,  B01J2/04 ,  C01P2004/50 ,  C01P2004/60

    摘要： A process and a device for producing anhydrous alkali sulfide, wherein an alkali sulfide solution, alkali sulfide suspension, alkali sulfide dispersion or alkali water of crystallization melt is dried by spray drying with inert drying gas loaded with water vapour.

    摘要翻译： 一种制备无水碱硫化物的方法和装置，其中通过用负载有水蒸气的惰性干燥气体喷雾干燥碱金属硫化物溶液，碱金属硫化物悬浮液，碱金属硫化物分散体或结晶熔融的碱水。

    Process for preparing crystals of anhydrous sodium sulfide
    9.
    发明授权
    Process for preparing crystals of anhydrous sodium sulfide 失效
    制备无水硫酸钠晶体的方法

    公开(公告)号：US5071632A

    公开(公告)日：1991-12-10

    申请号：US645348

    申请日：1991-01-23

    申请人： Kannosuke Maeda ,  Yoshio Aoyama

    发明人： Kannosuke Maeda ,  Yoshio Aoyama

    IPC分类号： C01B17/22 ,  C01B17/38

    CPC分类号： C01B17/38 ,  C01P2006/80 ,  C01P2006/82

    摘要： Disclosed is a process for preparing crystals of anhydrous sodium sulfide, the process being characterized in that the process comprises the steps of heating a water-containing non-crystalline sodium sulfide at a temperature of about 30.degree. to about 89.degree. C. under a pressure of about 500 torr or less for about 2 hours or longer in a first-stage heating step and further heating the sodium sulfide at a temperature of about 90.degree. to about 200.degree. C. under atmospheric pressure or reduced pressure for about 2 hours or longer in a second-stage heating step.