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HIGHLY ACIDIC COMPOSITIONS COMPRISING ZIRCONIUM OXIDE, TITANIUM OXIDE AND TUNGSTEN OXIDE AND TREAT 发明申请

2023-04-05 4320 954K 0

专利信息

申请日期 2025-07-25 申请号 US12446184
公开(公告)号 US20100247411A1 公开(公告)日 2010-09-30
公开国别 US 申请人省市代码 全国
申请人 Olivier Larcher; Emmanuel Rohart; Stephan Verdier; Heather Bradshaw; Clive Butler; Deborah Harris; Mairead Feeley; Hazel Stephenson
简介 Compositions useful for treating exhaust gases contain zirconium, titanium and tungsten oxides, and optionally the oxide of an element M selected from among silicon, aluminum, iron, molybdenum, manganese, zinc, tin, and rare earths in the following mass proportions of these different elements : titanium oxide : 20%-50%; tungsten oxide : 1%-20%, M-element oxide : 1%-20%; the balance being zirconium oxide; such compositions are prepared by placing in a liquid medium a zirconium compound, a titanium compound, optionally an M-element compound and a basic compound, adding a tungsten compound to the precipitate suspension thus obtained and having a pH value ranging from 1 to 7, maturing the suspension resulting from the preceding step, and optionally separating the precipitate and calcining same.


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