Ultra high silicon-content zeolites and preparation thereof
    1.
    发明授权
    Ultra high silicon-content zeolites and preparation thereof 失效
    超高硅含量沸石及其制备方法

    公开(公告)号:US4093560A

    公开(公告)日:1978-06-06

    申请号:US688459

    申请日:1976-05-20

    IPC分类号: C01B39/02 B01J29/06

    CPC分类号: C01B39/026 B01J2229/16

    摘要: A method is provided for obtaining crystalline dealuminized products by treating a slurry of a crystalline aluminosilicate zeolite in an aqueous solution of an ammonium or alkali metal salt which upon acidification yields an anion which complexes with aluminum by adding to said slurry a water-soluble acid having a first ionization constant greater than 10.sup.-2 at a rate such that a controlled amount of aluminum is removed from the zeolite to yield a resulting product from which at least about 10% and as much as about 85% of the initial aluminum has been removed while retaining more than 60% of the original crystallinity.

    摘要翻译: 提供一种通过在铵或碱金属盐的水溶液中处理结晶硅铝酸盐沸石的浆料来获得结晶脱铝产品的方法,其在酸化时产生与铝复合的阴离子,所述阴离子通过向所述浆料中加入具有 大于10-2的第一离子化常数,使得从沸石中除去受控量的铝,得到所得产物,其中至少约10%和最多约85%的初始铝已被除去 同时保留60%以上的原始结晶度。

    EMM-3, new crystalline microporous material
    3.
    发明授权
    EMM-3, new crystalline microporous material 有权
    EMM-3,新型结晶微孔材料

    公开(公告)号:US07255849B2

    公开(公告)日:2007-08-14

    申请号:US10863125

    申请日:2004-06-08

    IPC分类号: C01B37/04 C01B37/08

    摘要: EMM-3 (ExxonMobil Material number 3) is a new crystalline microporous material with a framework of tetrahedral atoms connected by atoms capable of bridging the tetrahedral atoms, the tetrahedral atom framework being defined by the interconnections between the tetrahedrally coordinated atoms in its framework. EMM-3 can be prepared in aluminophosphate (AlPO) and metalloaluminophosphate (MeAPO) compositions with the hexamethonium template. It has a unique X-ray diffraction pattern, which identifies it as a new material. EMM-3 is stable to calcination in air, absorbs hydrocarbons, and is catalytically active for hydrocarbon conversion.

    摘要翻译: EMM-3(埃克森美孚材料3号)是一种新的结晶微孔材料,其四面体原子框架由能够桥接四面体原子的原子连接,四面体原子框架由其框架中的四面体配位原子之间的互连定义。 可以在具有六甲铵模板的磷酸铝(AlPO)和金属铝磷酸盐(MeAPO)组合物中制备EMM-3。 它具有独特的X射线衍射图,将其识别为新材料。 EMM-3在空气中煅烧稳定,吸收烃,对烃转化具有催化活性。

    Active zeolite catalysts of improved stability for producing gasoline
from methanol
    10.
    发明授权
    Active zeolite catalysts of improved stability for producing gasoline from methanol 失效
    活性沸石催化剂具有改善从甲醇生产汽油的稳定性

    公开(公告)号:US4663492A

    公开(公告)日:1987-05-05

    申请号:US872359

    申请日:1986-06-09

    摘要: A feedstock of low molecular weight oxygenates such as methanol and/or dimethylether is contacted with a mildly presteamed or hydro-thermally treated zeolite catalyst in a reaction zone to produce liquid hydrocarbons in the gasoline boiling range. The pretreated zeolite catalyst has an .alpha.-value (acid cracking activity) substantially the same as the .alpha.-value of fresh unsteamed catalyst and shows increased stability and resistance to aging under oxygenate conversion conditions of elevated temperature and pressure.

    摘要翻译: 在反应区中将低分子量含氧化合物如甲醇和/或二甲醚的原料与轻度预蒸馏或热热处理的沸石催化剂接触以产生汽油沸程范围内的液体烃。 预处理的沸石催化剂具有基本上与新鲜未蒸汽催化剂的α值相同的α-值(酸裂解活性),并且在升高的温度和压力的含氧化合物转化条件下显示增加的稳定性和耐老化性。