High density leucite/pollucite based ceramics from zeolite
    4.
    发明授权
    High density leucite/pollucite based ceramics from zeolite 失效
    来自沸石的高密度白云石/琉璃苣基陶瓷

    公开(公告)号:US5192722A

    公开(公告)日:1993-03-09

    申请号:US729660

    申请日:1991-07-15

    IPC分类号: C04B35/19

    CPC分类号: C04B35/19

    摘要: This invention relates to processes for preparing a ceramic article having as its principal crystalline phase a leucite/pollucite solid solution. The process involves the use of a zeolite to form the article. Zeolites which can be used are those that have a SiO.sub.2 /Al.sub.2 O.sub.3 ratio of about 3.5 to about 7.5 such as zeolite Y. The zeolite is exchanged with potassium, rubidium and cesium, then calcined at a temperature of about 900.degree. to about 1100.degree. C. for a time to collapse the zeolite framework and provide an amorphous powder. Next, the amorphous powder is formed into a shaped article and the article is sintered at a temperature of about 1150.degree. to about 1400.degree. C. for a time of about 0.5 to about 12 hours to give a ceramic article whose principal crystalline phase is a leucite/pollucite solid solution, is substantially crack free, has less than 5% porosity, and a coefficient of thermal expansion of about 2.times.10.sup.-6 to about 27.times.10.sup.-60 C.sup.-1. This invention also relates to the leucite/pollucite ceramic article.

    摘要翻译: 本发明涉及制备具有白云母/琉璃灰固体溶液作为其主要结晶相的陶瓷制品的方法。 该方法涉及使用沸石来形成制品。 可以使用的沸石是具有约3.5至约7.5的SiO 2 / Al 2 O 3比例的沸石,例如沸石Y.沸石与钾,铷和铯交换,然后在约900℃至约1100℃的温度下煅烧 一段时间来坍缩沸石骨架并提供无定形粉末。 接下来,将无定形粉末形成成型制品,并将制品在约1150℃至约1400℃的温度下烧结约0.5至约12小时,得到主要结晶相为 白云母/白矾土固溶体基本上无裂纹,孔隙率小于5%,热膨胀系数约2×10-6至约27×10-60℃-1。 本发明还涉及白云石/琉璃苣陶瓷制品。

    Hydrocarbon conversion processes using a novel crystalline microporous
metal oxysulfide composition
    5.
    发明授权
    Hydrocarbon conversion processes using a novel crystalline microporous metal oxysulfide composition 失效
    使用新的结晶微孔金属氧硫化物组合物的烃转化方法

    公开(公告)号:US5128025A

    公开(公告)日:1992-07-07

    申请号:US803936

    申请日:1991-12-09

    摘要: This invention deals with a hydrocarbon conversion process using a crystalline oxysulfide composition. The crystalline oxysulfide composition has a three-dimensional microporous framework structure of at least MO.sub.2, MS.sub.2, and MOS tetrahedral units, having an intracrystalline pore system and an empirical formula expressed in molar ratios:(M.sub.s Al.sub.t P.sub.u Si.sub.v)S.sub.w O.sub.2-wwhere M is at least one metal selected from the group consisting of metals which: 1) can be incorporated into the framework structure of a microporous molecular sieve and 2) form hydrolytically stable sulfides; s, t, u, v and w are the mole fractions of M, Al, P, Si and S respectively. The values of s, t, u and v are chosen such that when t is greater than zero u is greater than zero, s+t+u+v=1 and when s=1, M is only a combination of gallium and germanium.

    摘要翻译: 本发明涉及使用结晶氧硫化物组合物的烃转化方法。 结晶氧硫化物组合物具有至少具有MO2,MS2和MOS四面体单元的三维微孔骨架结构,具有结晶孔系统和以摩尔比表示的经验式:(MsAltPuSiv)SwO 2 -w,其中M为至少一个 选自以下的金属的金属:1)可以结合到微孔分子筛的骨架结构中,2)形成水解稳定的硫化物; s,t,u,v和w分别是M,Al,P,Si和S的摩尔分数。 选择s,t,u和v的值,使得当t大于零时,u大于零,s + t + u + v = 1,当s = 1时,M只是镓和锗的组合 。

    Iron-titanium-aluminum-phosphorus-oxide molecular sieve compositions
    9.
    发明授权
    Iron-titanium-aluminum-phosphorus-oxide molecular sieve compositions 失效
    铁 - 钛 - 铝 - 氧化磷分子筛组成

    公开(公告)号:US4917876A

    公开(公告)日:1990-04-17

    申请号:US195474

    申请日:1988-05-17

    IPC分类号: B01J29/84 C01B25/45

    CPC分类号: B01J29/84 C01B39/00

    摘要: Crystalline molecular sieves having three-dimensional microporous framework structures of FeO.sub.2, TiO.sub.2, AlO.sub.2, and PO.sub.2 tetrahedral oxide units are disclosed. These molecular sieves have an empirical chemical composition on an anhydrous basis expressed by the formula:mR:(M.sub.x Al.sub.y P.sub.z)O.sub.2wherein "R" represents at least one organic templating agent present in the intracrystalline pore system; "M" represents iron and titanium, "m" represents the molar amount of "R" present per mole of (M.sub.x Al.sub.y P.sub.z)O.sub.2 ; and "x", "y" and "z" represnt the mole fractions of "M", aluminum and phosphorus, respectively, present as tetrahedral oxides. Their use as adsorbents, catalysts, etc. is also disclosed.

    摘要翻译: 公开了具有FeO 2,TiO 2,AlO 2和PO 2四面体氧化物单元的三维微孔骨架结构的结晶分子筛。 这些分子筛具有无水基础上的经验化学组成,由下式表示:mR:(MxAlyPz)O 2其中“R”表示存在于晶体内孔系统中的至少一种有机模板剂; “M”表示铁和钛,“m”表示每摩尔(M×AlyPz)O 2存在的“R”摩尔量; 和“x”,“y”和“z”分别表示作为四面体氧化物存在的“M”,铝和磷的摩尔分数。 还公开了它们作为吸附剂,催化剂等的用途。