Process for producing binder-free ZSM-5 zeolite in small crystal size
    6.
    发明申请
    Process for producing binder-free ZSM-5 zeolite in small crystal size 有权
    用于生产小晶粒尺寸的无粘结剂ZSM-5沸石的方法

    公开(公告)号:US20070042900A1

    公开(公告)日:2007-02-22

    申请号:US11503143

    申请日:2006-08-14

    IPC分类号: B01J29/00 C01B39/00

    CPC分类号: C01B39/40

    摘要: The present invention relates to a process for producing a binder-free ZSM-5 zeolite in small crystal size. The invention is primarily used for solving the problems in the practical application, e.g., the zeolite powder is difficult to be recovered and easily inactivates and aggregates, and the addition of the binder in the shaping process will result in the reduction of effective surface areas and introduce the diffusional limitation. Said problems are better solved in the present invention by using diatomite or silica aerogel as the main starting material, adding a seed crystal orienting agent, a silica sol and sodium silicate for kneading and shaping, and then converting to integrative ZSM-5 in small crystal size by vapor-solid phase crystallization with organic amine and water vapor. Said process can be used in the industrial preparation of ZSM-5 molecular sieve catalyst in small crystal size.

    摘要翻译: 本发明涉及一种生产小型晶体尺寸的无粘结剂ZSM-5沸石的方法。 本发明主要用于解决实际应用中的问题,例如沸石粉末​​难以回收并易于失活和聚集,并且在成型过程中添加粘合剂将导致有效表面积的降低, 引入扩散限制。 通过使用硅藻土或二氧化硅气凝胶作为主要原料,加入晶种取向剂,二氧化硅溶胶和硅酸钠进行捏合和成型,然后转化为小晶体中的一体化ZSM-5,在本发明中更好地解决了所述问题 通过与有机胺和水蒸汽的气 - 固相结晶的尺寸。 所述方法可用于小晶体尺寸的ZSM-5分子筛催化剂的工业制备。

    Process for producing binder-free ZSM-5 zeolite in small crystal size
    7.
    发明授权
    Process for producing binder-free ZSM-5 zeolite in small crystal size 有权
    用于生产小晶粒尺寸的无粘结剂ZSM-5沸石的方法

    公开(公告)号:US07601330B2

    公开(公告)日:2009-10-13

    申请号:US11503143

    申请日:2006-08-14

    IPC分类号: C01B39/00 B01J21/00

    CPC分类号: C01B39/40

    摘要: The present invention relates to a process for producing a binder-free ZSM-5 zeolite in small crystal size. The invention is primarily used for solving the problems in the practical application, e.g., the zeolite powder is difficult to be recovered and easily inactivates and aggregates, and the addition of the binder in the shaping process will result in the reduction of effective surface areas and introduce the diffusional limitation. Said problems are better solved in the present invention by using diatomite or silica aerogel as the main starting material, adding a seed crystal orienting agent, a silica sol and sodium silicate for kneading and shaping, and then converting to integrative ZSM-5 in small crystal size by vapor-solid phase crystallization with organic amine and water vapor. Said process can be used in the industrial preparation of ZSM-5 molecular sieve catalyst in small crystal size.

    摘要翻译: 本发明涉及一种生产小型晶体尺寸的无粘结剂ZSM-5沸石的方法。 本发明主要用于解决实际应用中的问题,例如沸石粉末​​难以回收并易于失活和聚集,并且在成型过程中添加粘合剂将导致有效表面积的降低, 引入扩散限制。 通过使用硅藻土或二氧化硅气凝胶作为主要原料,添加晶种取向剂,硅溶胶和硅酸钠进行捏合和成形,然后转化为小晶体中的一体化ZSM-5,在本发明中更好地解决了所述问题 通过与有机胺和水蒸汽的气 - 固相结晶的尺寸。 所述方法可用于小晶体尺寸的ZSM-5分子筛催化剂的工业制备。