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    Process for the production of mixed oxide powders for catalysts for the removal of nitrogen oxides
    2.
    发明授权
    Process for the production of mixed oxide powders for catalysts for the removal of nitrogen oxides 失效
    用于生产用于除去氮氧化物的催化剂的混合氧化物粉末的方法

    公开(公告)号：US5723404A

    公开(公告)日：1998-03-03

    申请号：US649924

    申请日：1996-05-16

    申请人： Kai Butje ,  Jurgen Kischkewitz ,  Rolf Michael Braun ,  Udo Holtmann ,  Peter-Joachim Barenthien

    发明人： Kai Butje ,  Jurgen Kischkewitz ,  Rolf Michael Braun ,  Udo Holtmann ,  Peter-Joachim Barenthien

    IPC分类号： B01D53/86 ,  B01D53/94 ,  B01J21/06 ,  B01J23/22 ,  B01J23/28 ,  B01J23/30 ,  B01J37/02 ,  B01J101/50

    CPC分类号： B01J21/063 ,  B01D53/8628 ,  B01J37/0236

    摘要： A process for the production of a mixed oxide powder, that contains as chief constituent TiO.sub.2 in the form of anatase and as minor constituents at least one of the catalytically active oxides MoO.sub.3, WO.sub.3 and V.sub.2 O.sub.5, suitable for use as a catalyst for the removal of nitrogen oxides, comprising (a) partially neutralizing a titanium dioxide hydrate suspension containing sulphuric acid with an alkaline liquor to a pH value between about 4.0 and 6.0 at temperatures between about 20.degree. and 100.degree. C., (b) filtering the suspension from (a) to produce a filter cake and intensively washing the filter cake, (c) adding to the filter cake from (b) at least one water-soluble salt of at least one of the metals Mo, W and V in solid or dissolved form, and (d) drying the filter cake from (c) and calcining it at a temperature between about 300.degree. and 750.degree. C.

    摘要翻译： 一种混合氧化物粉末的制造方法，其包含主要成分为锐钛矿形式的TiO 2和作为少量成分的至少一种催化活性氧化物MoO 3，WO 3和V 2 O 5的方法，适合用作除去 氮氧化物，其包含（a）在约20℃至100℃的温度下，将含有碱性液的硫酸的二氧化钛水合物悬浮液部分中和至约4.0至6.0之间的pH值，（b）将（ a）生产滤饼并强烈地洗涤滤饼，（c）从（b）至少一种金属Mo，W和V的至少一种水溶性盐固体或溶解形式的滤饼中加入滤饼 ，（d）将（c）的滤饼干燥，并在约300〜750℃的温度下煅烧。

    Process for the production of storable, free-flowing hydrated ferrous sulfate
    3.
    发明授权
    Process for the production of storable, free-flowing hydrated ferrous sulfate 失效
    生产可储存，自由流动的水合硫酸亚铁的方法

    公开(公告)号：US5268159A

    公开(公告)日：1993-12-07

    申请号：US905175

    申请日：1992-06-24

    申请人： Udo Holtmann

    发明人： Udo Holtmann

    IPC分类号： C01G49/14 ,  C02F1/52

    CPC分类号： C01G49/14 ,  C02F1/5236

    摘要： A process for the production of storable, free-flowing hydrated ferrous sulfate which comprises mixing moist ferrous sulfate heptahydrate and dried hydrated ferrous sulfate in such a ratio that a free-flowing and storable product is obtained.

    摘要翻译： 一种生产可储存，自由流动的水合硫酸亚铁的方法，其包括将湿硫酸亚铁七水合物和干燥的水合硫酸亚铁混合，得到获得自由流动和可储存的产物的比例。