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    Process for preparing cordierite
    3.
    发明授权
    Process for preparing cordierite 失效
    堇青石制备工艺

    公开(公告)号：US5089456A

    公开(公告)日：1992-02-18

    申请号：US606281

    申请日：1990-10-31

    申请人： Kazuyuki Maeda ,  Fujio Mizukami ,  Shuichi Niwa ,  Makoto Toba ,  Kazuo Shimizu

    发明人： Kazuyuki Maeda ,  Fujio Mizukami ,  Shuichi Niwa ,  Makoto Toba ,  Kazuo Shimizu

    IPC分类号： C01B33/26 ,  C04B35/195 ,  C04B35/624 ,  C07F7/02

    CPC分类号： C01B33/26 ,  C04B35/195 ,  C04B35/624

    摘要： A process for preparing a cordierite, which includes dissolving a silicon compound, an aluminum compound and a magnesium compound in a molar ratio of 1:0.7 to 1:0.3 to 0.5 in a complexing agent represented by the formula R(OCH.sub.2 CH.sub.2).sub.n OH, wherein R is an alkyl group and n is an integer of 1 to 4; heating the resulting solution to bring about a ligand exchange reaction of the silicon compound, aluminum compound and magnesium compound with the complexing agent; conducting hydrolysis to form a gel; drying the gel and sintering the dried gel at 800.degree. to 1450.degree. C.

    摘要翻译： 一种制备堇青石的方法，其包括在由式R（OCH 2 CH 2）nOH表示的络合剂中将摩尔比为1:0.7至1:0.3至0.5的硅化合物，铝化合物和镁化合物溶解，其中 R为烷基，n为1〜4的整数。 加热所得溶液以引起硅化合物，铝化合物和镁化合物与络合剂的配体交换反应; 进行水解以形成凝胶; 干燥凝胶并将干燥的凝胶烧结在800°至1450℃。

    Cyclodextrin-silica composite and a method for the preparation thereof
    5.
    发明授权
    Cyclodextrin-silica composite and a method for the preparation thereof 失效
    环糊精 - 二氧化硅复合物及其制备方法

    公开(公告)号：US4781858A

    公开(公告)日：1988-11-01

    申请号：US73766

    申请日：1987-07-15

    申请人： Fujio Mizukami ,  Makoto Toba ,  Shuichi Niwa ,  Sumi Imai

    发明人： Fujio Mizukami ,  Makoto Toba ,  Shuichi Niwa ,  Sumi Imai

    IPC分类号： A61K9/26 ,  C01B33/113 ,  C07B63/02 ,  C08B37/16 ,  C08L5/16 ,  C12N11/14 ,  A01N25/10 ,  B01J13/00 ,  B01J13/02

    CPC分类号： C08B37/0012 ,  C08L5/16 ,  C12N11/14 ,  Y10S514/963 ,  Y10S514/965 ,  Y10T428/2989

    摘要： A mixture of a cyclodextrin and an alkoxy silane compound, e.g., tetraethoxy silane, is admixed with water and an acidic or alkaline catalyst, e.g., acetic acid, to effect ligand exchange and hydrolysis of the alkoxy silane followed by gelation into a gelled mass which is dried and, preferably, leached with water to remove excess of the cyclodextrin. The thus obtained gelled material is a composite having a structure in which the cyclodextrin molecules are incorporated into the matrix of amorphous silica presumably by forming Si-O-C linkages. The composite has characteristics as a combination of the properties of both of the component materials and can expand the applicability of the materials, for example, as a carrier of catalysts and immobilized enzymes, absorbent and adsorbent and so on.

    摘要翻译： 将环糊精和烷氧基硅烷化合物（例如四乙氧基硅烷）的混合物与水和酸性或碱性催化剂（例如乙酸）混合，以实现烷氧基硅烷的配体交换和水解，然后凝胶化成凝胶状物质 干燥，优选用水淋洗以除去过量的环糊精。 由此获得的胶凝材料是具有这样的结构的复合物，其中环糊精分子掺入无定形二氧化硅的基质中，可能通过形成Si-O-C键。 复合材料具有作为两种组分材料的性质的组合的特征，并且可以扩展材料的适用性，例如作为催化剂和固定化酶的载体，吸收剂和吸附剂等。

    Method for partial nuclear hydrogenation of aromatic hydrocarbon compounds and a hydrogenation catalyst therefor
    6.
    发明授权
    Method for partial nuclear hydrogenation of aromatic hydrocarbon compounds and a hydrogenation catalyst therefor 失效
    芳烃化合物的部分核氢化方法及其加氢催化剂。

    公开(公告)号：US4495373A

    公开(公告)日：1985-01-22

    申请号：US582565

    申请日：1984-02-22

    申请人： Shuichi Niwa ,  Juichi Imamura ,  Fujio Mizukami ,  Kazuo Shimizu ,  Yoshio Orito

    发明人： Shuichi Niwa ,  Juichi Imamura ,  Fujio Mizukami ,  Kazuo Shimizu ,  Yoshio Orito

    IPC分类号： B01J23/00 ,  B01J23/46 ,  C07B61/00 ,  C07C1/00 ,  C07C5/11 ,  C07C13/20 ,  C07C67/00 ,  C07C5/02

    CPC分类号： B01J23/462 ,  C07C5/11 ,  C07C2521/04 ,  C07C2521/08 ,  C07C2521/12 ,  C07C2523/46 ,  C07C2523/72

    摘要： The invention provides an improvement in the partial nuclear hydrogenation of an aromatic hydrocarbon compound in the liquid phase with admixture of water catalyzed by a ruthenium-containing solid catalyst. The scope of the invention is in the use of a novel ruthenium-containing catalyst supported on a silica gel and the like carrier and the catalyst is prepared by the hydrolysis and gelation of an alkoxide of silicon or aluminum in a solution containing a ruthenium compound, e.g. ruthenium alkoxide, followed by drying of the gelled material so that the resultant catalyst is very uniformly impregnated with the ruthenium ingredient to be imparted with greatly improved catalytis activity and selectivity for the intended reaction over conventional ruthenium-containing catalysts prepared by post-impregnation of a preformed silica gel carrier.

    摘要翻译： 本发明提供了通过含钌固体催化剂催化的水的混合在液相中芳族烃化合物的部分核氢化的改进。 本发明的范围是使用负载在硅胶等载体上的新型含钌催化剂，并且通过在含有钌化合物的溶液中水解和凝胶化硅或铝的醇盐来制备催化剂， 例如 钌醇盐，然后干燥凝胶材料，使得所得到的催化剂非常均匀地浸渍钌成分，与所用的含钌催化剂相比，通过后浸渍法制备的催化剂活性和选择性大大提高。 预制的硅胶载体。