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    Process for preparing chromium(III) oxide
    5.
    发明授权
    Process for preparing chromium(III) oxide 有权
    制备氧化铬（III）的方法

    公开(公告)号：US09580333B2

    公开(公告)日：2017-02-28

    申请号：US13991516

    申请日：2011-12-07

    申请人： Holger Friedrich ,  Matthias Boll ,  Rainer Ortmann

    发明人： Holger Friedrich ,  Matthias Boll ,  Rainer Ortmann

    IPC分类号： C01G37/033 ,  C01G37/00 ,  C09C1/34

    CPC分类号： C01G37/033 ,  C01G37/00 ,  C01P2006/80 ,  C09C1/346

    摘要： Process for preparing chromium(III) oxide, which comprises the steps: a) reaction of sodium monochromate with gaseous ammonia, in particular at a temperature of from 200 to 800° C., b) hydrolysis of the reaction product obtained in step a) with the pH of the water for the hydrolysis being reduced before the hydrolysis or that of the alkaline mother liquor being reduced during or after the hydrolysis, to a value of from 4 to 11, preferably from 5 to 10, by means of an acid, c) isolation of the hydrolysis product which has precipitated in step b), preferably at a pH of from 4 to 11, in particular from 5 to 10, and optionally washing and optionally drying and d) calcination of the hydrolysis product obtained in step c) at a temperature of from 700 to 1400° C., in particular from 800 to 1300° C.

    摘要翻译： 制备氧化铬（III）的方法，其包括以下步骤：a）将单色钠与气态氨反应，特别是在200至800℃的温度下，b）水解步骤a）中获得的反应产物， 在水解之前水解的水的pH降低，或在水解期间或之后碱性母液的pH降低至4至11，优选5至10的值，借助于酸， c）分离在步骤b）中沉淀的水解产物，优选在4至11，特别是5至10的pH下，并任选地洗涤和任选地干燥和d）煅烧步骤c中获得的水解产物 ），温度为700〜1400℃，特别是800〜1300℃。

    Electrolysis Device For The Production Of Alkali Metal
    7.
    发明申请
    Electrolysis Device For The Production Of Alkali Metal 失效
    用于生产碱金属的电解装置

    公开(公告)号：US20080053837A1

    公开(公告)日：2008-03-06

    申请号：US11575187

    申请日：2005-09-13

    申请人： Gunther Huber ,  Michael Lutz ,  Michael Wille ,  Holger Friedrich ,  Josef Guth ,  Uwe Behling ,  Axel Franke ,  Elisabeth Gunkel

    发明人： Gunther Huber ,  Michael Lutz ,  Michael Wille ,  Holger Friedrich ,  Josef Guth ,  Uwe Behling ,  Axel Franke ,  Elisabeth Gunkel

    IPC分类号： C25C1/22 ,  C25D17/00

    CPC分类号： C25C7/005 ,  C25C3/02 ,  C25C7/007

    摘要： An electrolysis device producing alkali metals from a liquid alkali metal heavy metal alloy, including at least two connected tubes forming an electrolysis unit. Two solid electrolyte tubes are arranged concentrically in each tube and oriented with openings towards one end of each tube such that a first annular gap for guiding a liquid alkali metal forming an anode is located between the inside of the tube and the outside of the solid electrolyte tubes. An alloy inlet and outlet for the liquid alkali metal in each of the tubes leads into the first annular gap of a tube. An inner chamber sealed off from the alloy inlet, first annular gap, and alloy outlet in each solid electrolyte tube receives liquid alkali metal that can be used as a cathode connected to the alkali metal outlet. Two respective closure devices are arranged at the two ends of each tube.

    摘要翻译： 一种从液态碱金属重金属合金制造碱金属的电解装置，包括形成电解单元的至少两个连接管。 两个固体电解质管同心地布置在每个管中并且朝向每个管的一端定向开口，使得用于引导形成阳极的液态碱金属的第一环形间隙位于管的内部和固体电解质的外部之间 管。 每个管中的液态碱金属的合金入口和出口通向管的第一环形间隙。 在每个固体电解质管中的合金入口，第一环形间隙和合金出口密封的内室容纳可用作连接到碱金属出口的阴极的液态碱金属。 两个相应的闭合装置布置在每个管的两端。