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    • 2. 发明授权
    • Method for producing zeolites
    • 生产沸石的方法
    • US4199556A
    • 1980-04-22
    • US23856
    • 1979-03-26
    • Charles J. PlankEdward J. RosinskiMae K. Rubin
    • Charles J. PlankEdward J. RosinskiMae K. Rubin
    • B01J29/40C01B39/36C01B39/38C01B33/28
    • B01J29/40C01B39/365C01B39/38Y10S423/22Y10S423/29
    • As synthesized by previous methods, ZSM-5 or ZSM-11 zeolites are crystallized in the presence of substantial amounts of a nitrogen-containing compound. When synthesized in this way, they contain an organic ammonium cation as well as a metal cation such as sodium. To obtain a more active form, the sodium ion must be exchanged out. Such exchange, especially with ZSM-5 and ZSM-11, is difficult unless there is calcination of the zeolite to remove the obstructing organo compounds. By making these zeolites in the presence of (1) seeds of the desired zeolite, (2) mixtures of them with ammonium hydroxide and/or alcohol, (3) the alcohol per se or (4) mixtures of the alcohol with ammonium hydroxide, a product substantially deficient in organic ammonium cation is obtained. These products can be exchanged directly without any calcination.
    • 通过以前的方法合成,ZSM-5或ZSM-11沸石在大量含氮化合物的存在下结晶。 当以这种方式合成时,它们含有有机铵阳离子以及诸如钠的金属阳离子。 要获得更活跃的形式,必须将钠离子交换出来。 这种交换,尤其是与ZSM-5和ZSM-11的交换是困难的,除非有煅烧沸石去除阻碍的有机化合物。 在(1)所需沸石的种子存在下制备这些沸石,(2)它们与氢氧化铵和/或醇的混合物,(3)醇本身或(4)醇与氢氧化铵的混合物, 获得了有机铵阳离子基本上不足的产物。 这些产品可直接进行交换而无需任何煅烧。
    • 8. 发明授权
    • Synthesis of zeolite ZSM-4
    • 沸石ZSM-4的合成
    • US4021447A
    • 1977-05-03
    • US572979
    • 1975-04-30
    • Mae K. RubinCharles J. PlankEdward J. Rosinski
    • Mae K. RubinCharles J. PlankEdward J. Rosinski
    • B01J29/70C01B39/34C01B33/28C07D295/00
    • C01B39/34B01J29/7011Y10S423/26
    • As synthesized by previous methods, ZSM-4 zeolites are crystallized in the presence of substantial amounts of a tetramethylammonium hydroxide or halide. When synthesized in this way, they contain the tetramethylammonium cation as well as a metal cation such as sodium. To obtain a more catalytically active form, the sodium ion must be exchanged to very low levels. Catalysts prepared in this manner have been found to be quite low in stability. By synthesizing these zeolites in the presence of pyrrolidine or choline salts, ZSM-4 having a different organic nitrogen containing cation but the same crystal structure as previously prepared ZSM-4 is obtained. Catalysts made therefrom are, surprisingly, much more stable than those prepared from ZSM-4 made by previous methods.
    • 通过以前的方法合成,ZSM-4沸石在大量的四甲基氢氧化铵或卤化物存在下结晶。 当以这种方式合成时,它们含有四甲基铵阳离子以及诸如钠的金属阳离子。 为了获得更具催化活性的形式,钠离子必须交换到非常低的水平。 发现以这种方式制备的催化剂的稳定性相当低。 通过在吡咯烷或胆碱盐的存在下合成这些沸石,得到具有不同有机含氮阳离子但具有与先前制备的ZSM-4相同的晶体结构的ZSM-4。 令人惊奇地,由其制备的催化剂比由先前方法制备的ZSM-4制备的催化剂更加稳定。