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    • 64. 发明授权
    • Methods to improve heteroatom lattice substitution in large and extra-large pore borosilicate zeolites
    • 改进大孔径和超大孔隙硼硅酸盐沸石中杂原子晶格取代的方法
    • US06790433B2
    • 2004-09-14
    • US10274249
    • 2002-10-18
    • Cong-Yan ChenStacey I. Zones
    • Cong-Yan ChenStacey I. Zones
    • C01B3906
    • B01J29/86C01B39/026
    • The invention, in one embodiment, is a method for preparing crystalline zeolites by (a) contacting a calcined essentially aluminum free borosilicate zeolite with an aqueous acid solution, thereby producing an at least partially deboronated zeolite; (b) contacting said at least partially deboronated zeolite with a solution selected from the group consisting of an aqueous aluminum salt solution, thereby producing an aluminosilicate zeolite; an aqueous gallium salt solution, thereby producing a gallosilicate zeolite; an aqueous iron salt solution, thereby producing a ferrosilicate zeolite; and mixtures thereof; and (c) where the contacting in step (b) occurs at a pH of not greater than about 3.5. In another embodiment, the present invention provides a method for preparing crystalline zeolites by contacting a calcined essentially aluminum free large or extra-large pore borosilicate zeolite with a solution selected from the group consisting of an aqueous aluminum salt solution, thereby producing an aluminosilicate zeolite; an aqueous gallium salt solution, thereby producing a gallosilicate zeolite; an aqueous iron salt solution, thereby producing a ferrosilicate zeolite; and mixtures thereof; and where the contacting occurs at a pH of not greater than about 3.5.
    • 在一个实施方案中,本发明是通过(a)使煅烧的基本上不含铝的硼硅酸盐沸石与酸水溶液接触来制备结晶沸石的方法,从而产生至少部分脱硼的沸石; (b)使所述至少部分脱硼的沸石与选自铝盐水溶液的溶液接触,从而制备铝硅酸盐沸石; 一种镓盐水溶液,从而生产硅酸镓沸石; 一种铁盐水溶液,从而生产一种硅酸铝沸石; 及其混合物; 和(c)步骤(b)中的接触在不大于约3.5的pH下发生。 在另一个实施方案中,本发明提供了一种制备结晶沸石的方法,该方法通过将煅烧的基本上不含铝的大或超大孔硼硅酸盐沸石与选自铝盐水溶液的溶液接触,由此生产硅铝酸盐沸石; 一种镓盐水溶液,从而生产硅酸镓沸石; 一种铁盐水溶液,从而生产一种硅酸铝沸石; 及其混合物; 并且其中接触在不大于约3.5的pH下进行。
    • 65. 发明授权
    • Conversion of refinery C5 paraffins into C4 and C6 paraffins
    • 炼油厂C5石蜡转化为C4和C6链烷烃
    • US06566569B1
    • 2003-05-20
    • US09603489
    • 2000-06-23
    • Cong-Yan ChenDennis J. O'RearScott R. Brundage
    • Cong-Yan ChenDennis J. O'RearScott R. Brundage
    • C07C500
    • B01J23/6527B01J35/0006C10G45/58C10G59/00Y02P20/582
    • A process for preparing a C4- product stream and a C6+ product stream is disclosed. The process involves contacting a C5 containing paraffinic feedstock with a catalyst that includes a hydrogenation/dehydrogenation catalyst and an olefin metathesis catalyst under conditions which dehydrogenate the paraffins to olefins. The olefins are then metathesized and rehydrogenated to provide a product stream. A C4- fraction and a C6+ fraction can each be isolated from the product stream. The C4- fraction can be used, for example, in an alkylation reaction to provide compounds useful in gasoline compositions. Unconverted C5 paraffins can be recycled. The C6+ fraction can be used, for example, as solvents. Alternatively, they can be isomerized to form gasoline additives, or can be converted to aromatic compounds via reforming, for example, using conventional reforming techniques, preferably using the AROMAX™ process or traditional rheniforming conditions.
    • 公开了一种制备C4-产物流和C6 +产物流的方法。 该方法包括使含有C5的石蜡原料与包含氢化/脱氢催化剂和烯烃复分解催化剂的催化剂在使链烷烃脱氢成烯烃的条件下接触。 然后将烯烃进行复合和再氢化以提供产物流。 可以从产物流中分离出C4馏分和C6 +馏分。 C4馏分可用于例如烷基化反应以提供可用于汽油组合物中的化合物。 未转化的C5石蜡可以回收利用。 C6 +馏分可以用作例如溶剂。 或者,它们可以被异构化以形成汽油添加剂,或者可以通过重整转化为芳族化合物,例如使用常规的重整技术,优选使用AROMAX TM方法或传统的强化条件。