Method for the synthesis of molecular sieves

    公开(公告)号:US06540970B1

    公开(公告)日:2003-04-01

    申请号:US09705352

    申请日:2000-11-03

    IPC分类号: C01B3706

    摘要: The present invention provides a method for the synthesis of MeAPO molecular sieves which includes the following steps: providing a source of alumina, a source of phosphorus, water, and a template suitable for forming a MeAPO molecular sieve; providing a source of metal (Me) including metal particles, the metal particles measuring, in their largest dimension, equal to or less than five nanometers; providing a water soluble organic solvent capable of solubilizing the source of metal; forming a synthesis mixture from the source of alumina, the source of phosphorus, the water, the template, the source of metal, and the solvent; and forming a MeAPO molecular sieve from the synthesis mixture.

    Crystalline zeolite (ECR-1) and process for preparing it
    6.
    发明授权
    Crystalline zeolite (ECR-1) and process for preparing it 失效
    结晶沸石(ECR-1)及其制备方法

    公开(公告)号:US4657748A

    公开(公告)日:1987-04-14

    申请号:US713050

    申请日:1985-03-18

    IPC分类号: B01J29/70 C01B39/02 C01B33/28

    摘要: A synthetic crystalline zeolite is provided characterized by having a composition, in terms of mole ratios of oxides, in the range:0.1 to 0.02 R.sub.2 O:0.90 to 0.98 Na.sub.2 O:Al.sub.2 O.sub.3 :5 to 20 SiO.sub.2 :0 to 8 H.sub.2 Owherein R represents a bis-(2-hydroxyethyl) dimethylammonium group, and characterized by having atoms arranged in a structure as indicated by a specified x-ray powder diffraction pattern. The zeolite may be prepared by crystallization from an aged reaction mixture of an oxide of sodium, a bis-(2-hydroxyethyl) dimethylammonium salt, water, a source of silica, a source of alumina, and sodium aluminosilicate nucleating seeds in specified relative amounts.

    摘要翻译: 提供合成结晶沸石,其特征在于以氧化物的摩尔比计,其组成范围为0.1至0.02R 2 O:0.90至0.98 Na 2 O:Al 2 O 3:5至20 SiO 2:0至8 H 2 O,其中R表示双 - (2-羟乙基)二甲基铵基,其特征在于具有按照规定的x射线粉末衍射图所示的结构排列的原子。 沸石可以通过将钠,二 - (2-羟乙基)二甲基铵盐,水,二氧化硅源,氧化铝源和硅铝酸钠成核种子的氧化物的老化反应混合物以规定的相对量 。

    Silicoaluminophosphates having an AEL structure
    9.
    发明授权
    Silicoaluminophosphates having an AEL structure 失效
    具有AEL结构的硅铝磷酸盐

    公开(公告)号:US06294493B1

    公开(公告)日:2001-09-25

    申请号:US09315416

    申请日:1999-05-20

    IPC分类号: B01J2906

    摘要: Disclosed are silicoaluminophosphates (SAPOs) having unique silicon distributions and high catalytic cracking activity, a method for their preparation and their use as FCC catalysts. More particularly, the new SAPOs have a high silica:alumina ratio and favorable Si atom distribution. The new SAPOs may have a small crystal size and may be synthesized from a single- phase synthesis solution.

    摘要翻译: 公开了具有独特硅分布和高催化裂解活性的硅铝磷酸盐(SAPO),其制备方法及其作为FCC催化剂的用途。 更具体地说,新的SAPO具有高的二氧化硅:氧化铝比和有利的Si原子分布。 新的SAPO可能具有小的晶体尺寸,并且可以由单相合成溶液合成。