VACUUM-ASSISTED PROCESS FOR PREPARING AN ION-EXCHANGED ZEOLITE MEMBRANE
    1.
    发明申请
    VACUUM-ASSISTED PROCESS FOR PREPARING AN ION-EXCHANGED ZEOLITE MEMBRANE 审中-公开
    用于制备离子交换的沸石膜的真空辅助方法

    公开(公告)号:US20160279625A1

    公开(公告)日:2016-09-29

    申请号:US14890549

    申请日:2014-04-22

    Abstract: Effect ion-exchange of an alpha-alumina supported zeolite (e.g. a MFI zeolite, an LTA zeolite or a FAU zeolite) membrane, which process comprises: a) placing the membrane, which has a first surface and a spaced apart second surface, the first and second surfaces defining therebetween the membrane, in an ion exchange apparatus such that the first surface is in contact with an ion exchange solution and the second surface is in contact with a vapor space that is connected to a source of reduced pressure; b) actuating the source of reduced pressure to create a pressure differential between the first and second membrane surfaces of at least 0.4 atmosphere (0.405×105 pascals); and c) maintaining the pressure differential under ion exchange conditions for a period of time sufficient to effect exchange of an ion contained in the ion exchange solution with an ion in the zeolite membrane in an amount that is greater than an amount of ion exchange attained using an apparatus that places the second surface in contact with a liquid solvent that is at a pressure of at least one atmosphere (1.013×105 pascals) and the first surface in contact with the ion exchange solution at a pressure of at least two atmospheres (2.026×105 pascals) so as to establish a pressure differential between the two surfaces of at least one atmosphere (1.013×105 pascals), maintaining the pressure differential for the same period of time, and using the same ion exchange membrane, ion exchange solution and ion exchange temperature, the greater amount of ion exchange yielding an improved ion exchange membrane that a ratio of the ion that entered the membrane from the solution to the ion that left the membrane that is greater than that of the ion exchanged membrane prepared with the second surface in contact with the liquid solvent.

    Abstract translation: 影响α-氧化铝负载的沸石(例如MFI沸石,LTA沸石或FAU沸石)膜的离子交换,该方法包括:a)将具有第一表面和间隔开的第二表面的膜, 在离子交换装置中,使得第一表面与离子交换溶液接触并且第二表面与连接到减压源的蒸汽空间接触,在隔膜之间限定隔膜的第一和第二表面; b)致动减压源以在第一和第二膜表面之间产生至少0.4个大气压(0.405×105帕斯卡)的压力差; 和c)在离子交换条件下保持压差足以使离子交换溶液中包含的离子与沸石膜中的离子以大于使用的离子交换量进行交换的时间 使第二表面与处于至少一个气压(1.013×10 5帕斯卡)的压力的液体溶剂接触并且在至少两个大气压的压力下与离子交换溶液接触的第一表面(2.026 ×105帕斯卡),以便在至少一个气氛(1.013×105帕斯卡)的两个表面之间建立压差,保持相同时间段的压力差,并使用相同的离子交换膜,离子交换溶液和 离子交换温度,更大量的离子交换产生改进的离子交换膜,从溶液到离子进入膜的离子的比例 留下的膜比用与液体溶剂接触的第二表面制备的离子交换膜的膜更大。

    METHOD FOR SELECTIVELY ISOLATING HYDROGEN OR HELIUM USING A NATROLITE-BASED ZEOLITE, AND NOVEL NATROLITE-BASED ZEOLITE
    3.
    发明申请
    METHOD FOR SELECTIVELY ISOLATING HYDROGEN OR HELIUM USING A NATROLITE-BASED ZEOLITE, AND NOVEL NATROLITE-BASED ZEOLITE 审中-公开
    使用基于NATROLITE的沸石和基于NATROLITE的新型沸石选择性分离氢或氦的方法

    公开(公告)号:US20150086475A1

    公开(公告)日:2015-03-26

    申请号:US14560344

    申请日:2014-12-04

    Applicant: Suk Bong Hong

    Inventor: Suk Bong Hong

    Abstract: The present invention relates to selectively isolating gases using a natrolite-based zeolite, and more particularly, to a novel natrolite-based zeolite and to selectively isolating hydrogen and/or helium gas using a natrolite-based zeolite. The present invention is characterized in that gas containing hydrogen is brought into contact with a natrolite-based zeolite to selectively isolate the hydrogen. The present invention provides a sorbent which can selectively isolate hydrogen and/or helium, and provides a method for isolating the hydrogen and/or helium at room temperature or at a high temperature.

    Abstract translation: 本发明涉及使用基于天竺沸石的沸石选择性分离气体,更具体地说,涉及一种新型的基于natrolite的沸石,并且使用基于天竺沸石的沸石来选择性地分离氢气和/或氦气。 本发明的特征在于,含有氢的气体与基于铵盐的沸石接触以选择性地分离氢。 本发明提供了可以选择性地分离氢和/或氦的吸附剂,并提供在室温或高温下分离氢和/或氦的方法。

    METHOD FOR THE PREPARATION OF MWW TYPE ZEOLITE
    4.
    发明申请
    METHOD FOR THE PREPARATION OF MWW TYPE ZEOLITE 有权
    MWW型沸石的制备方法

    公开(公告)号:US20130330273A1

    公开(公告)日:2013-12-12

    申请号:US13988937

    申请日:2011-11-21

    CPC classification number: C01B39/48 C01B39/00 C01B39/04 C01B39/065 C01B39/082

    Abstract: The present invention relates to a method for preparing MWW type zeolite; said method comprising i) intimately mixing together, in the absence of any organic structure directing agent or crystalline MWW type zeolite seeds, a predetermined quantity of a compound containing silicon dioxide, a compound containing metal oxide, water and a pH modifier to obtain an aqueous amorphous metallosilicate gel; and ii) hydrotherinally treating said gel in the presence of an organic tempiating agent to provide a crystalline M W w type zeonte.

    Abstract translation: 本发明涉及一种制备MWW型沸石的方法; 所述方法包括i)在不存在任何有机结构导向剂或结晶MWW型沸石种子的情况下,将预定量的含有二氧化硅的化合物,含金属氧化物的化合物,水和pH调节剂紧密混合在一起,以获得含水 无定形金属硅酸盐凝胶; 和ii)在有机温和剂存在下水解处理所述凝胶以提供结晶的M W w型沸腾。

    Zeolite compositions and preparation and use thereof
    5.
    发明授权
    Zeolite compositions and preparation and use thereof 失效
    沸石组合物及其制备及应用

    公开(公告)号:US07922996B2

    公开(公告)日:2011-04-12

    申请号:US11791752

    申请日:2005-11-25

    Abstract: This invention relates to novel compositions of zeolites or microporous metallosilicates characterized by a continuous spatial distribution of the metal and silicon in the crystals and characterized by a crystal surface enriched in silicon relative to the internal part of the same crystals. This invention also relates to a synthesis method of producing these metallosilicates with spatial distribution of the constituting elements. These novel zeolitic compositions can be used in various hydrocarbon conversion reactions. The crystalline metallosilicates can be selected from the group consisting of aluminosilicates, gallosilicates, ferrosilicates, titanosilicates and borosilicates.

    Abstract translation: 本发明涉及沸石或微孔金属硅酸盐的新型组合物,其特征在于金属和硅在晶体中的连续空间分布,并且特征在于相对于相同晶体的内部部分富含硅的晶体表面。 本发明还涉及一种具有构成元素空间分布的这些金属硅酸盐的合成方法。 这些新型沸石组合物可用于各种烃转化反应。 结晶的金属硅酸盐可以选自铝硅酸盐,硅酸盐,硅酸盐,钛硅酸盐和硼硅酸盐。

    Zeolite Compositions and Preparation and Use Thereof
    7.
    发明申请
    Zeolite Compositions and Preparation and Use Thereof 失效
    沸石组合物及其制备与应用

    公开(公告)号:US20080118431A1

    公开(公告)日:2008-05-22

    申请号:US11791751

    申请日:2005-11-25

    Abstract: This invention relates to novel compositions of zeolites or microporous metallosilicates characterised by a continuous spatial distribution of the metal and silicon in the crystals and characterised by a crystal surface enriched in silicon relative to the internal part of the same crystals. This invention also relates to a synthesis method of producing these metallosilicates with spatial distribution of the constituting elements. These novel zeolitic compositions can be used in various hydrocarbon conversion reactions. The crystalline metallosilicates can be selected from the group consisting of aluminosilicates, gallosilicates, ferrosilicates, titanosilicates and borosilicates.

    Abstract translation: 本发明涉及沸石或微孔金属硅酸盐的新型组合物,其特征在于金属和硅在晶体中的连续空间分布,并且特征在于相对于相同晶体的内部部分富含硅的晶体表面。 本发明还涉及一种具有构成元素空间分布的这些金属硅酸盐的合成方法。 这些新型沸石组合物可用于各种烃转化反应。 结晶的金属硅酸盐可以选自铝硅酸盐,硅酸盐,硅酸盐,钛硅酸盐和硼硅酸盐。

    Crystalline zeolite-like gallosilicate, and method for its synthesis
    8.
    发明授权
    Crystalline zeolite-like gallosilicate, and method for its synthesis 失效
    结晶沸石状硅酸盐及其合成方法

    公开(公告)号:US5466432A

    公开(公告)日:1995-11-14

    申请号:US287232

    申请日:1994-08-08

    Abstract: The invention relates to a crystalline zeolite-like gallosilicate having an atomic ratio of Si/Ga in the outer crystalline surface that is not larger than the average Si/Ga ratio for the whole of the crystal. The invention also relates to a method of making such a gallosilicate comprising the hydrothermal crystallization of a strictly inorganic reaction mixture having the following molar ratios: SiO.sub.2 /Ga.sub.2 O.sub.3 .gtoreq.5; OH.sup.- /SiO.sub.2 =0.05-1.0; and H.sub.2 O/SiO.sub.2 =10-1,000. The invention further relates to the above-described method wherein said reaction mixture is prepared by adding an aged gel to a first mixture, the first mixture preferably having a composition with the following molar ratios: SiO.sub.2 /Ga.sub.2 O.sub.3 .gtoreq.5; OH.sup.- /SiO.sub.2 =0.05 to 1.0; and H.sub.2 O/SiO.sub.2 =20 to 100.

    Abstract translation: 本发明涉及外晶面中Si / Ga原子比不大于整个晶体的平均Si / Ga比的结晶沸石状半硅酸盐。 本发明还涉及一种制备这种硅酸盐硅酸盐的方法,其包括具有以下摩尔比的严格无机反应混合物的水热结晶:SiO 2 / Ga 2 O 3> = 5; OH- / SiO 2 = 0.05-1.0; 和H2O / SiO2 = 10-1,000。 本发明还涉及上述方法,其中所述反应混合物通过将老化凝胶加入到第一混合物中制备,第一混合物优选具有以下摩尔比的组成:SiO 2 / Ga 2 O 3> = 5; OH- / SiO 2 = 0.05〜1.0; 和H 2 O / SiO 2 = 20〜100。

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