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    • 9. 发明授权
    • Small crystal ZSM-5, as a catalyst
    • 小晶体ZSM-5,作为催化剂
    • US5240892A
    • 1993-08-31
    • US823408
    • 1992-01-21
    • Donald J. Klocke
    • Donald J. Klocke
    • C01B39/38
    • C01B39/38Y10S423/22
    • A process for preparing, in the absence of organic directing agent, a porous crystalline silicate having the structure of ZSM-5 having a sorption capacity for mesitylene of at least about 3 weight percent which comprises:a) providing a crystallization reaction mixture which includes a source of at least one component of crystalline silicate framework element, including silicon, wherein the solids content of said source in the crystallization reaction mixture is at least 35 weight percent;b) maintaining the crystallization temperature at less than about 250.degree. C.c) maintaining agitation conditions during crystallization sufficient to result in said crystal size;d) maintaining a mole ratio of OH.sup.- /SiO.sub.2 in the reaction mixture of at least about 0.11; ande) recovering porous crystalline silicate crystals.
    • 在不存在有机导向剂的情况下制备具有至少约3重量%的均三甲苯的吸附容量的ZSM-5结构的多孔结晶硅酸盐的方法,其包括:a)提供结晶反应混合物,其包含 至少一种结晶硅酸盐骨架元素组分的源,包括硅,其中所述结晶反应混合物中所述源的固体含量为至少35重量%; b)保持结晶温度低于约250℃。c)在结晶期间保持搅拌条件足以导致所述晶体尺寸; d)保持反应混合物中OH- / SiO 2的摩尔比至少约为0.11; 和e)回收多孔结晶硅酸盐晶体。