会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 8. 发明授权
    • Synthesis of zeolite ZSM-5
    • 沸石ZSM-5的合成
    • US4526879A
    • 1985-07-02
    • US520746
    • 1983-08-05
    • Francis G. DwyerPochen Chu
    • Francis G. DwyerPochen Chu
    • B01J29/40C01B39/40C01B33/28
    • C01B39/40B01J29/40B01J2229/26B01J2229/42Y10S423/22
    • As synthesized by conventional technique, zeolite ZSM-5 is crystallized in the presence of substantial amount of tetraalkylammonium cations, the alkyl groups of which contain 2 to 5 carbon atoms, such as, for example, tetrapropylammonium. When synthesized in the conventional way, ZSM-5 contains tetraalkylammonium cations as well as a substantial amount of sodium ions. To obtain a more catalytically active form of ZSM-5, the sodium ions must be exchanged to very low levels. By synthesizing zeolite ZSM-5 according to the present method, i.e., in the presence of a combination of an amine and a halide in the presence of a mutual solvent and with a specifically defined reaction mixture composition, ZSM-5 having different organic nitrogen-containing cations but the same crystal structure as conventionally prepared ZSM-5 is obtained. The ZSM-5 prepared in accordance herewith is very low in sodium content as synthesized and has a crystal size of from about 0.05 microns to about 20 microns.
    • 如通过常规技术合成的,沸石ZSM-5在存在大量四烷基铵阳离子(其烷基含有2至5个碳原子的四烷基铵阳离子)存在下结晶,例如四丙基铵。 当以常规方式合成时,ZSM-5含有四烷基铵阳离子以及大量的钠离子。 为了获得更具催化活性的ZSM-5形式,钠离子必须交换到非常低的水平。 通过根据本发明的方法合成沸石ZSM-5,即在相互溶剂存在下,在胺和卤化物的组合存在下,与特定定义的反应混合物组合物,具有不同有机氮气的ZSM-5, 得到与常规制备的ZSM-5相同的晶体结构。 根据本文制备的ZSM-5的钠含量非常低,并且具有约0.05微米至约20微米的晶体尺寸。