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95 条记录 (耗时 0.035 秒)

    High density lithium-based ceramics from zeolites
    85.
    发明授权
    High density lithium-based ceramics from zeolites 失效
    来自沸石的高密度锂基陶瓷

    公开(公告)号：US5179051A

    公开(公告)日：1993-01-12

    申请号：US808399

    申请日：1991-12-16

    申请人： Robert L. Bedard ,  Edith M. Flanigen

    发明人： Robert L. Bedard ,  Edith M. Flanigen

    IPC分类号： C04B35/19

    CPC分类号： C04B35/19 ,  Y10T428/256 ,  Y10T428/258

    摘要： This invention relates to a process for preparing a lithium containing ceramic article. The process provides a ceramic article that is substantially crack free and has as its principal crystalline phase a beta-eucryptite phase, a beta-spodumene phase, or a mixture thereof. The process comprises calcining a powder of a lithium-exchanged zeolite up to its collapse temperature for a time sufficient to collapse the zeolite framework and provide an amorphous powder. The amorphous powder is now formed into a shaped article and sintered at a temperature of about 700.degree. to about 1150.degree. C. for a time of about 1 to about 12 hours. The zeolites which can be used are those having a SiO.sub.2 Al.sub.2 O.sub.3 ratio of about 2 to about 8.5 and include zeolite B, zeolite ZK-19, zeolite W, phillipsite, hormotome, gismondine and mixtures thereof and have a sodium content less than about 1 weight percent. It is preferred that the lithium-exchanged zeolite have an average particle size of less than about 10 microns.

    摘要翻译： 本发明涉及一种制备含锂陶瓷制品的方法。 该方法提供了一种基本上无裂纹的陶瓷制品，其主要结晶相为β-锂辉石相，β-锂辉石相或其混合物。 该方法包括将锂交换的沸石的粉末直到其崩溃温度煅烧足以使沸石骨架塌缩并提供无定形粉末的时间。 无定形粉末现在形成成型制品，并在约700℃至约1150℃的温度下烧结约1至约12小时。 可以使用的沸石是具有约2至约8.5的SiO 2 Al 2 O 3比率的沸石，包括沸石B，沸石ZK-19，沸石W，菲利普斯，激素切割剂，吉他松及其混合物，钠含量低于约1重量％ 。 锂交换的沸石优选具有小于约10微米的平均粒度。

    Crystalline microporous metal oxysulfide compositions
    87.
    发明授权
    Crystalline microporous metal oxysulfide compositions 失效
    结晶微孔金属氧硫化物组合物

    公开(公告)号：US5122357A

    公开(公告)日：1992-06-16

    申请号：US670826

    申请日：1991-03-18

    申请人： Robert L. Bedard ,  Edith M. Flanigen ,  Stephen T. Wilson

    发明人： Robert L. Bedard ,  Edith M. Flanigen ,  Stephen T. Wilson

    IPC分类号： B01J29/00 ,  B01J29/84 ,  B01J29/85 ,  C01B17/98 ,  C01G1/00 ,  C01G9/00 ,  C01G15/00 ,  C01G17/00 ,  C01G19/00 ,  C01G37/00

    CPC分类号： C01B33/2884 ,  B01J29/005 ,  B01J29/85 ,  B01J29/84

    摘要： This invention deals with a crystalline oxysulfide composition, a process for preparing the composition, a catalyst using the composition and processes using the 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 oxysulfide composition is prepared by contacting a molecular sieve having an empirical formula: (M.sub.s Al.sub.t P.sub.u Si.sub.v)O.sub.2 with a sulfur containing compound such as carbonyl sulfide for a time and a temperature sufficient to sulfide a fraction of the metal. The oxysulfide compositions are useful as catalyst in hydrocarbon conversion processes such as cracking.

    摘要翻译： 本发明涉及结晶氧硫化物组合物，制备组合物的方法，使用该组合物的催化剂和使用该组合物的方法。 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，其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。 通过使经验式为（MsAltPuSiv）O 2的分子筛与含硫化合物如硫化羰接触一段时间和足以硫化金属部分的温度来制备氧硫化物组合物。 氧硫化物组合物可用作烃转化过程如裂解中的催化剂。

    High density cordierite ceramics from zeolite
    88.
    发明授权
    High density cordierite ceramics from zeolite 失效
    高沸点堇青石陶瓷

    公开(公告)号：US4980323A

    公开(公告)日：1990-12-25

    申请号：US452990

    申请日：1989-12-19

    申请人： Robert L. Bedard ,  Edith M. Flanigen

    发明人： Robert L. Bedard ,  Edith M. Flanigen

    IPC分类号： C01B33/26 ,  C04B35/195

    CPC分类号： C01B33/26 ,  C04B35/195

    摘要： This invention relates to processes for preparing ceramic articles which are especially suited for electronic applications. The process involves taking a shaped article which has been formed from a magnesium exchanged zeolite powder, the zeolite selected from the group consistig of phillipsite, harmotome, gismondine, zeolite B, zeolite ZK-19 and zeolite W, and sintering it at a temperature of about 1,000.degree. to 1,350.degree. C. for about 1 to about 6 hours. The magnesium exchanged zeolite has a SiO.sub.2 /Al.sub.2 O.sub.3 ratio of about 2.3 to about 2.8 and a sodium content less than 0.5 weight percent. The ceramic article that is formed has a substantially crystalline cordierite phase and has a density of at least 90% of its theoretical density. A preferred process involves calcining the magnesium exchanged zeolite powder at a temperature of about 600.degree.-800.degree. C. to collapse the zeolite framework and give upon sintering a cordierite ceramic article which is substantially crack free. A preferred magnesium exchanged zeolite is magnesium exchanged zeolite B.

    摘要翻译： 本发明涉及特别适用于电子应用的陶瓷制品的制备方法。 该方法包括从由镁交换的沸石粉末形成的成型制品，选自由金刚石，火焰切割机，吉他松碱，沸石B，沸石ZK-19和沸石W组成的组的沸石，并在 约1000至1350℃约1至约6小时。 镁交换沸石的SiO 2 / Al 2 O 3比例为约2.3至约2.8，钠含量小于0.5重量％。 形成的陶瓷制品具有基本上结晶的堇青石相，并且其密度至少为其理论密度的90％。 优选的方法包括在约600-800℃的温度下煅烧镁交换的沸石粉末以使沸石骨架塌缩，并在烧结基本上无裂纹的堇青石陶瓷制品时给出。 优选的镁交换沸石是镁交换沸石B.

    Multiphase composite and processes for preparing same
    89.
    发明授权
    Multiphase composite and processes for preparing same 失效
    多相复合材料及其制备方法

    公开(公告)号：US4904518A

    公开(公告)日：1990-02-27

    申请号：US213261

    申请日：1988-06-29

    申请人： William C. Mercer ,  Peter K. Coughlin ,  Stephen T. Wilson ,  Edith M. Flanigen

    发明人： William C. Mercer ,  Peter K. Coughlin ,  Stephen T. Wilson ,  Edith M. Flanigen

    IPC分类号： B32B18/00

    CPC分类号： B32B18/00 ,  C04B2237/34 ,  C04B2237/341 ,  C04B2237/343 ,  C04B2237/346 ,  C04B2237/348 ,  C04B2237/38 ,  C04B2237/704 ,  Y10T428/24802 ,  Y10T428/24851 ,  Y10T428/249969 ,  Y10T428/24999 ,  Y10T428/26 ,  Y10T428/261 ,  Y10T428/263

    摘要： This invention relates to multi-compositional, multiphase composite compositions comprising as phases thereof (i) an electronically conducting or semi-conducting substrate, (ii) an inorganic oxide composition layer in proximity to at least a portion of the surface of said electrically conducting or semi-conducting substrate and (iii) an inorganic crystalline molecular sieve composition layer upon at least a portion of the surface of said inorganic oxide composition layer. The inorganic crystalline molecular sieve composition layer is grown by crystal growth upon at least a portion of the inorganic oxide composition layer surface. The different phases of the composite compositions are substantially contiguous and exhibit a distinct compositional and/or structural heterogeneity of one phase to another. The multi-compositional, multiphase composite compositions have beneficial utility as a moisture sensing element in an electric hydrometer which measures the moisture content of moisture-containing systems by change in electrical impedance. This invention also relates to processes for preparing the multi-compositional, multiphase composite compositions.

    摘要翻译： 本发明涉及多组合多相复合材料组合物，其包含其相（i）电子导电或半导电基材，（ii）无机氧化物组合物层，其接近所述导电或半导电基材表面的至少一部分， 半导体基材和（iii）在所述无机氧化物组合物层的至少一部分表面上的无机结晶分子筛组合物层。 无机结晶分子筛组合物层通过在无机氧化物组合物层表面的至少一部分上的晶体生长而生长。 复合组合物的不同相基本上是连续的，并且表现出一个相与另一相的不同组成和/或结构异质性。 多组分多相复合组合物作为电子比重计中的湿度感测元件具有有益的用途，其通过电阻抗的变化来测量含湿系统的含水量。 本发明还涉及制备多组分多相复合组合物的方法。