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15 条记录 (耗时 0.028 秒)

    Process for decomposition of methanol
    5.
    发明授权
    Process for decomposition of methanol 失效
    甲醇分解方法

    公开(公告)号：US5336440A

    公开(公告)日：1994-08-09

    申请号：US975951

    申请日：1992-11-13

    申请人： Tadamitsu Kiyoura ,  Takashi Jimbo ,  Yasuo Kogure ,  Kazuo Kanaya

    发明人： Tadamitsu Kiyoura ,  Takashi Jimbo ,  Yasuo Kogure ,  Kazuo Kanaya

    IPC分类号： B01J23/26 ,  C01B3/22 ,  C01B3/32 ,  C07C1/02

    CPC分类号： B01J23/26 ,  C01B3/22 ,  C01B3/326 ,  C01B2203/1047 ,  C01B2203/1052 ,  C01B2203/1076 ,  Y02P20/52

    摘要： Methanol is decomposed in the presence of a catalyst containing chromium oxide and zinc oxide as main components and containing a compound of at least one element selected from the group consisting of alkali metals, alkali earth metals and lanthanides, while contents of iron and nickel in the catalyst are each maintained at 0.5% by weight or less. This process is characterized by (1) being excellent in stability at high temperatures, (2) preventing the catalyst from deteriorating, (3) inhibiting the production of by-products, and (4) obtaining a gas in which the CO/H.sub.2 ratio is high.

    摘要翻译： 甲醇在含有氧化铬和氧化锌作为主要成分的催化剂存在下分解，并含有选自碱金属，碱土金属和镧系元素中的至少一种元素的化合物，而铁和镍的含量在 催化剂各自保持在0.5重量％以下。 该方法的特征在于（1）在高温下的稳定性优异，（2）防止催化剂劣化，（3）抑制副产物的生成，（4）获得CO / H 2比 高。

    Process for the selective ortho-alkylation of phenolic compounds
    7.
    发明授权
    Process for the selective ortho-alkylation of phenolic compounds 失效
    酚类化合物的选择性邻烷基化方法

    公开(公告)号：US4227023A

    公开(公告)日：1980-10-07

    申请号：US966356

    申请日：1978-12-04

    申请人： Motoo Kawamata ,  Tadamitsu Kiyoura ,  Kazushi Ohshima ,  Yasuo Kogure ,  Akihide Kudoh ,  Makoto Kotani

    发明人： Motoo Kawamata ,  Tadamitsu Kiyoura ,  Kazushi Ohshima ,  Yasuo Kogure ,  Akihide Kudoh ,  Makoto Kotani

    IPC分类号： B01J21/00 ,  B01J23/00 ,  B01J23/34 ,  C07B61/00 ,  C07C27/00 ,  C07C37/16 ,  C07C39/06 ,  C07C67/00 ,  C07C37/14

    CPC分类号： B01J23/34 ,  C07C37/16

    摘要： This invention relates to a process for the selective ortho-alkylation of a phenolic compound having at least one ortho-positioned a hydrogen atom by catalytically reacting the phenolic compound with an alcohol in the vapor phase. In this process, the reaction of the phenolic compound with the alcohol is carried out at a temperature of from 300.degree. to 550.degree. C. in the presence of a mixed oxide catalyst of manganese, silicon, and one or more additives selected from the group consisting of magnesium oxide, calcium oxide, strontium oxide, and barium oxide. The catalyst used in this invention exhibits not only excellent catalytic activity in the selective ortho-alkylation of phenols but also continuous stability of the activity, good shapability, and good mechanical strength.

    摘要翻译： 本发明涉及一种通过使酚类化合物与气相中的醇催化反应，使具有至少一个邻位氢原子的酚类化合物进行选择性邻位烷基化的方法。 在该方法中，酚类化合物与醇的反应在300℃至550℃的温度下，在锰，硅和一种或多种选自以下的添加剂的混合氧化物催化剂存在下进行： 由氧化镁，氧化钙，氧化锶和氧化钡组成。 用于本发明的催化剂不仅在酚的选择性邻烷基化中具有优异的催化活性，而且具有活性的连续稳定性，良好的成型性和良好的机械强度。

    Process for producing pyruvic acid
    8.
    发明授权
    Process for producing pyruvic acid 失效
    制备丙酮酸的方法

    公开(公告)号：US4247716A

    公开(公告)日：1981-01-27

    申请号：US932938

    申请日：1978-08-11

    申请人： Tadamitsu Kiyoura

    发明人： Tadamitsu Kiyoura

    IPC分类号： C07C51/235 ,  C07C59/19

    CPC分类号： C07C51/235

    摘要： A novel process for producing pyruvic acid is provided in which process hydroxyacetone is oxidized with a molecular oxygen-containing gas in a water-containing or aqueous solvent in the presence of a catalyst. The catalysts useful for the above oxidation reaction are those composed of either at least one metal selected from the group consisting of platinum, palladium, rhodium, ruthenium, and rhenium, or the at least one metal admixed with at least one element selected from the group consisting of silver, tellurium, tin, bismuth, lead and indium or with a compound of the at least one element. The resulting pyruvate can be effectively isolated in the form of a solid by concentrating the reaction solution and adding the concentrate to isopropyl alcohol.

    摘要翻译： 提供了一种制备丙酮酸的新方法，其中在催化剂存在下，在含水或含水溶剂中用含分子氧的气体氧化羟基丙酮。 可用于上述氧化反应的催化剂是由选自铂，钯，铑，钌和铼中的至少一种金属组成的催化剂，或至少一种与至少一种选自以下的元素混合的金属： 由银，碲，锡，铋，铅和铟组成，或与至少一种元素的化合物组成。 通过浓缩反应溶液并将浓缩物加入到异丙醇中，所得丙酮酸盐可以以固体的形式有效地分离。

    Process for preparing methylamines
    9.
    发明授权
    Process for preparing methylamines 失效
    甲胺制备方法

    公开(公告)号：US5959150A

    公开(公告)日：1999-09-28

    申请号：US426653

    申请日：1995-04-21

    申请人： Tadamitsu Kiyoura ,  Shigeki Nakahara

    发明人： Tadamitsu Kiyoura ,  Shigeki Nakahara

    IPC分类号： B01J29/18 ,  C07C209/16

    CPC分类号： B01J29/18 ,  C07C209/16

    摘要： A process for preparing methylamines is disclosed herein which comprises the step of reacting methanol with ammonia in the presence of a mordenite in which the ratio of the length of mordenite crystals in a c axis direction to that of the mordenite crystals in an a axis direction or a b axis direction, c/a or c/b is 2 or more, whereby the synthetic activity of the methylamines can be maintained at a high level, and the production ratio of trimethylamine can be inhibited to a low level of about several percent to predominantly produce dimethylamine and monomethylamine.

    摘要翻译： 本文公开了一种制备甲胺的方法，其包括在丝光沸丝存在下使甲醇与氨反应的步骤，其中在轴向方向上的丝光沸石晶体的长度与丝光沸石晶体的长度在轴向或ab 轴方向，c / a或c / b为2以上，由此可以将甲胺的合成活性维持在高水平，并且可以将三甲胺的生产比抑制在几个百分点左右的主要产生量 二甲胺和一甲胺。

    Process for producing salts of pyruvic acid
    10.
    发明授权
    Process for producing salts of pyruvic acid 失效
    制备丙酮酸盐的方法

    公开(公告)号：US4242525A

    公开(公告)日：1980-12-30

    申请号：US28695

    申请日：1979-04-10

    申请人： Tadamitsu Kiyoura

    发明人： Tadamitsu Kiyoura

    IPC分类号： C07C51/373 ,  C07C51/41 ,  C07C59/19

    CPC分类号： C07C51/373 ,  C07C51/41

    摘要： A salt of pyruvic acid is formed by oxidizing a salt of lactic acid with an oxygen-containing gas in a water-containing solvent in the presence of a catalyst. The catalyst used herein comprises (a) at least one component selected from platinum and palladium and (b) at least one component selected from lead, tin, tellurium, indium, bismuth, and compounds of these elements. The resulting pyruvate is isolated in the form of a solid by concentrating the catalyst-free reaction mixture and then mixing isopropyl alcohol therewith.

    摘要翻译： 在催化剂存在下，通过在含水溶剂中用含氧气体氧化乳酸盐，形成丙酮酸盐。 本文使用的催化剂包含（a）至少一种选自铂和钯的组分和（b）至少一种选自铅，锡，碲，铟，铋和这些元素的化合物的组分。 通过浓缩无催化剂的反应混合物然后将异丙醇混合，将所得的丙酮酸盐以固体形式分离。