SURFACE-MODIFIED ZEOLITES AND METHODS FOR PREPARING THE SAME
    9.
    发明申请
    SURFACE-MODIFIED ZEOLITES AND METHODS FOR PREPARING THE SAME 有权
    表面改性的沸石及其制备方法

    公开(公告)号:US20110245067A1

    公开(公告)日:2011-10-06

    申请号:US12750250

    申请日:2010-03-30

    申请人: Laszlo Nemeth Feng Xu

    发明人: Laszlo Nemeth Feng Xu

    IPC分类号: B01J29/06

    摘要: Surface-modified zeolites and methods for preparing surface-modified zeolites are provided. A hybrid polymer formed from a silicon alkoxide and a metal alkoxide, a co-monomer, or both, is contacted with a zeolite suspension. The zeolite suspension comprises a sodium-, an ammonium-, or a hydrogen-form zeolite and a solvent. The hybrid polymer and zeolite suspension are contacted under conditions sufficient to deposit hybrid polymer on external surfaces of the zeolite to form a treated zeolite. Solvent is removed therefrom. The treated zeolite is dried and calcinated to form a dried and calcinated treated zeolite. Forming of the zeolite suspension and the contacting, removing, drying, and calcinating steps are provided in one selectivation sequence to produce a surface-modified zeolite from the ammonium-form zeolite and the hydrogen-form zeolite. If the dried and calcinated treated zeolite is a sodium-form zeolite, the sodium is exchanged with ammonium and then additionally dried and calcinated.

    摘要翻译: 提供表面改性沸石和制备表面改性沸石的方法。 由硅醇盐和金属醇盐,共聚单体或两者形成的杂化聚合物与沸石悬浮液接触。 沸石悬浮液包含钠,铵或氢形式的沸石和溶剂。 混合聚合物和沸石悬浮液在足以在沸石的外表面上沉积杂化聚合物以形成经处理的沸石的条件下接触。 从中除去溶剂。 将经处理的沸石干燥并煅烧以形成经干燥和煅烧的处理的沸石。 沸石悬浮液的形成和接触,除去,干燥和煅烧步骤在一个选择序列中提供,以从铵型沸石和氢型沸石产生表面改性的沸石。 如果干燥和煅烧的经处理的沸石是钠型沸石,则钠与铵交换,然后另外干燥和煅烧。