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。