Zeolites derivatized with sulfonic acids
    1.
    发明授权
    Zeolites derivatized with sulfonic acids 失效
    用磺酸衍生的沸石

    公开(公告)号:US5204076A

    公开(公告)日:1993-04-20

    申请号:US732841

    申请日:1991-07-16

    IPC分类号: C01B39/02

    CPC分类号: C01B39/026 Y10S423/27

    摘要: The invention relates to sulfonic acid derivatives of crystalline porous materials having uniform pore size with an average pore size greater than 5 Angstroms or a Constraint Index of ten or less. In a preferred embodiment an acid treated crystalline porous material is reacted with a reagent to form the sulfonic acid derivative. The new products can be used as acid catalysts for acid catalyzed reactions. An example is the use of these materials in acid catalyzed etherification of methanol with isobutene.

    摘要翻译: 本发明涉及平均孔径大于5埃或约束指数为10以下的具有均匀孔径的结晶多孔材料的磺酸衍生物。 在优选的实施方案中,将酸处理的结晶多孔材料与试剂反应以形成磺酸衍生物。 新产品可用作酸催化剂用于酸催化反应。 一个例子是在甲醇与异丁烯的酸催化醚化中使用这些材料。

    Catalytic system for the reducton of nitrogen oxides
    2.
    发明授权
    Catalytic system for the reducton of nitrogen oxides 失效
    用于氮氧化物还原的催化体系

    公开(公告)号:US5589147A

    公开(公告)日:1996-12-31

    申请号:US271685

    申请日:1994-07-07

    摘要: There is presented a process for the treatment of exhaust gas, which process uses a specially prepared catalyst composition, for the selective catalytic reduction of NO.sub.x contained in the exhaust gas. An embodiment of the process of this invention comprises a catalytic stage to selectively catalytically reduce NO.sub.x over a catalyst composition comprising a molecular sieve that has been treated with a metal in a way effective to maximize metal dispersion. The catalyst of this invention typically comprises a silica, titania, or zirconia binder, e.g. a binder including a high molecular weight, hydroxyl functional silicone resin. The catalyst of this invention may be formed into a desired shape, e.g., by extrusion, and finished in a humidified atmosphere after forming.

    摘要翻译: 提出了一种处理废气的方法,该方法使用特别制备的催化剂组合物来选择性催化还原废气中所含的NOx。 本发明方法的一个实施方案包括催化阶段,以选择性地催化还原NOx,所述催化剂组合物包含用有效使金属分散最大化的金属处理的分子筛。 本发明的催化剂通常包括二氧化硅,二氧化钛或氧化锆粘合剂,例如, 包含高分子量羟基官能的有机硅树脂的粘合剂。 本发明的催化剂可以例如通过挤出形成所需的形状,并在成型后的加湿气氛中成型。

    Catalytic system for the reduction of nitrogen oxides
    4.
    发明授权
    Catalytic system for the reduction of nitrogen oxides 失效
    用于还原氮氧化物的催化体系

    公开(公告)号:US5552129A

    公开(公告)日:1996-09-03

    申请号:US271686

    申请日:1994-07-07

    摘要: There is presented a specially prepared catalyst and a process for the treatment of exhaust gas with that catalyst, which is useful for the selective catalytic reduction of NO.sub.x contained in the exhaust gas. An embodiment of the process of this invention comprises a catalytic stage to selectively catalytically reduce NO.sub.x over a catalyst composition comprising a metal and an in-situ crystallized zeolite, ZSM-5. The catalyst of this invention may be formed into a desired shape, e.g., by extrusion, and finished in a humidified atmosphere after forming.

    摘要翻译: 提出了一种特别制备的催化剂和用该催化剂处理废气的方法,其可用于选择性催化还原废气中所含的NOx。 本发明方法的一个实施方案包括在包含金属和原位结晶沸石ZSM-5的催化剂组合物上选择性催化还原NOx的催化阶段。 本发明的催化剂可以例如通过挤出形成所需的形状,并在成型后的加湿气氛中成型。