Method of making molecular sieves
    8.
    发明授权
    Method of making molecular sieves 失效
    制作分子筛的方法

    公开(公告)号:US5225179A

    公开(公告)日:1993-07-06

    申请号:US936955

    申请日:1992-08-27

    CPC分类号: C01B37/02

    摘要: 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.

    摘要翻译: 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。

    Process for preparing medium pore size zeolites using neutral amines
    9.
    发明授权
    Process for preparing medium pore size zeolites using neutral amines 失效
    使用中性胺制备中等孔径沸石的方法

    公开(公告)号:US5707600A

    公开(公告)日:1998-01-13

    申请号:US610449

    申请日:1996-03-04

    摘要: The present invention relates to a process for preparing medium pore size zeolites using small, neutral amines capable of forming the zeolite, the amine containing (a) only carbon, nitrogen and hydrogen atoms, (b) one primary, secondary or tertiary, but not quaternary, amino group, and (c) a tertiary nitrogen atom, at least one tertiary carbon atom, or a nitrogen atom bonded directly to at least one secondary carbon atom, wherein the process is conducted in the absence of a quaternary ammonium compound.

    摘要翻译: 本发明涉及一种使用能够形成沸石的小型中性胺制备中等孔径沸石的方法,该胺含有(a)仅碳,氮和氢原子,(b)一个伯,仲或叔,但不包括 季铵,氨基和(c)叔氮原子,至少一个叔碳原子或直接与至少一个仲碳原子键合的氮原子,其中该方法在不存在季铵化合物的情况下进行。

    Preparation of zeolites using low silica/alumina zeolites as a source of
aluminum
    10.
    发明授权
    Preparation of zeolites using low silica/alumina zeolites as a source of aluminum 失效
    使用低二氧化硅/氧化铝沸石作为铝源制备沸石

    公开(公告)号:US5340563A

    公开(公告)日:1994-08-23

    申请号:US908680

    申请日:1992-06-30

    摘要: An improved method of synthesizing large pore zeolites is disclosed and claimed. The method comprises preparing a reaction mixture containing a source zeolite on alkali metal, nitrogen containing organic cation, a source of silica, and water, and having the following composition in terms of the mole ratios:______________________________________ M.sup.+ /SiO.sub.2 = 0.01-1.00 OH.sup.- /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 = Greater Than 8 ______________________________________ wherein M.sup.+ is an alkali metal not supplied by the source zeolite, Q is an organic template, and Y is a mixture of aluminum from the source zeolite, wherein said source zeolite contains soda lite substructures having tetrahedra atom densities of less than about 15 TO.sub.2 per 1000 .ANG..sup.3 ; maintaining the reaction mixture at crystallization temperature until crystals are formed; and recovering the crystals.

    摘要翻译: 公开并要求保护合成大孔沸石的改进方法。 该方法包括制备含有碱金属源氮沸石,含氮有机阳离子,二氧化硅源和水的反应混合物,按摩尔比计算以下组成:-M + / SiO 2 = 0.01-1.00 -OH - / SiO2 = 0.15-0.80 -H2O / SiO2 = 20-120 -Q / SiO2 = 0.10-1.00 -SiO2 / Y2O3 =大于8 - 其中M +是不由源沸石供应的碱金属,Q是有机 模板,Y是来自沸石的铝的混合物,其中所述源沸石含有具有小于约15 TO2 / 1000 ANGSTROM 3的四面体原子密度的苏打液晶结构; 将反应混合物保持在结晶温度直到形成晶体; 并回收晶体。