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    • 4. 发明授权
    • Method of making molecular sieves
    • 制作分子筛的方法
    • US5225179A
    • 1993-07-06
    • US936955
    • 1992-08-27
    • Stacey I. ZonesYumi Nakagawa
    • Stacey I. ZonesYumi Nakagawa
    • C01B37/00B01J29/035B01J29/06C01B37/02C01B39/04C01B39/14C01B39/22C01B39/24C01B39/52C07B61/00C07C2/12C07C2/66C07C2/86C07C6/12C07C15/02C10G35/095C10G45/64C10G47/16C10G50/00
    • C01B37/02
    • A method for synthesizing molecular sieves is disclosed. The method comprises preparing an aqueous mixture comprising:a) a source zeolite, wherein said source zeolite contains sodalite substructures and has a tetrahedra atom density of less than about 15 TO.sub.2 per 1000 .ANG..sup.3, and wherein said source zeolite has a silica/alumina mole ratio greater than 200; an alkali metal oxide; and an organic template, and wherein said aqueous mixture has a composition in terms of mole ratios of oxides falling within the following ranges:______________________________________ M+/SiO.sub.2 = 0.01-1.00 OH-/SiO.sub.2 = 0.15-0.80 H.sub.2 O/SiO.sub.2 = 20-120 Q/SiO.sub.2 = 0.10-1.00 SiO.sub.2 /Y.sub.2 O.sub.3 > 200 ______________________________________ wherein M+ is an alkali metal not supplied by the source zeolite, Q is an organic template, Y is aluminum from the source zeolite, and Si is silica from the source zeolite; and(b) maintaining the aqueous mixture under conditions sufficient to form crystals of the molecular sieve.
    • 公开了一种合成分子筛的方法。 该方法包括制备含水混合物,其包含:a)源沸石,其中所述源沸石含有方钠石亚结构,并且每1000分子3具有小于约15 TO2的四面体原子密度,并且其中所述源沸石具有二氧化硅/氧化铝摩尔 比例大于200; 碱金属氧化物; 和有机模板,并且其中所述含水混合物具有以下范围内的氧化物摩尔比的组成:-M + / SiO 2 = 0.01-1.00 -OH- / SiO 2 = 0.15-0.80-H 2 O / SiO 2 = 20- 120 -Q / SiO 2 = 0.10-1.00 -SiO 2 / Y 2 O 3> 200 - 其中M +是不由源沸石供应的碱金属,Q是有机模板,Y是来自沸石的铝,Si是来自源的二氧化硅 沸石; 和(b)在足以形成分子筛晶体的条件下保持含水混合物。