CONTINUOUS METHOD FOR THE HYDROGENATION OF AROMATIC COMPOUNDS
    6.
    发明申请
    CONTINUOUS METHOD FOR THE HYDROGENATION OF AROMATIC COMPOUNDS 审中-公开
    用于芳香化合物加氢的连续方法

    公开(公告)号:US20120172632A1

    公开(公告)日:2012-07-05

    申请号:US13381999

    申请日:2010-06-10

    IPC分类号: C07C29/20

    摘要: The invention relates to a continuous method for the catalytic hydrogenation of an aromatic compound into a cycloaliphatic compound, wherein said method is carried out in a piston reactor provided with a mechanical axially agitating means and comprises continuously feeding a liquid phase comprising said aromatic compound and a catalyst dispersed to the liquid phase, subjecting said liquid phase, at a temperature of between 100° C. and 300° C. and while being mechanical axially agitated, to the effects of a hydrogen pressure of between 10 and 250 bars in the presence of said catalyst dispersed in the liquid phase for a residence time of between 1 second and 10 minutes, and removing the liquid phase from the reactor.

    摘要翻译: 本发明涉及一种用于将芳族化合物催化氢化成脂环族化合物的连续方法,其中所述方法在具有机械轴向搅拌装置的活塞反应器中进行,并且包括连续地供给包含所述芳族化合物的液相和 催化剂分散到液相中,在100℃和300℃之间的温度下对所述液相进行机械轴​​向搅拌,在10巴和250巴之间的氢气压力的作用下,在 所述催化剂在液相中分散1秒至10分钟的停留时间,并从反应器中除去液相。

    Method of making NiO and Ni nanostructures
    7.
    发明授权
    Method of making NiO and Ni nanostructures 有权
    制备NiO和Ni纳米结构的方法

    公开(公告)号:US07700068B2

    公开(公告)日:2010-04-20

    申请号:US11488956

    申请日:2006-07-19

    IPC分类号: C01G53/04 C22B23/02

    摘要: The alpha form of nickel (II) hydroxide is formed by dissolving a compound of nickel (II), such as nickel acetate, in a water miscible dihydric alcohol (diol), such as ethylene glycol, propylene glycol and suitable oligomers, and adding a suitable base such as sodium carbonate. The α-Ni(OH)2 precipitate is separated from the diol-based mother liquor and dried. This stable α-Ni(OH)2 can be calcined at temperatures in the range of about 573K to about 1073K to form nanometer-size particles of NiO having, for example, fibrous shapes. And the small particles of NiO can be reduced with hydrogen to form small, fibrous nickel particles. Both the NiO particles and Ni particles have utility as catalysts and offer utility in applications requiring electronic and/or magnetic properties.

    摘要翻译: 氢氧化镍(II)的α形式通过将诸如乙酸镍的镍(II)化合物溶解在水混溶二元醇(二醇)如乙二醇,丙二醇和合适的低聚物中,并加入 合适的碱如碳酸钠。 从基于二醇的母液中分离出α-Ni(OH)2沉淀物并干燥。 这种稳定的α-Ni(OH)2可以在约573K至约1073K的温度范围内煅烧,以形成具有例如纤维形状的纳米尺寸的NiO颗粒。 NiO的小颗粒可用氢还原形成小的纤维状镍颗粒。 NiO颗粒和Ni颗粒都可用作催化剂,并且在需要电子和/或磁性能的应用中具有实用性。

    Production of 3-alkylcycloalkanols
    10.
    发明申请
    Production of 3-alkylcycloalkanols 有权
    3-烷基环烷醇的生产

    公开(公告)号:US20040030193A1

    公开(公告)日:2004-02-12

    申请号:US10344531

    申请日:2003-09-08

    IPC分类号: C07C045/46

    摘要: A method of making a 3-alkylcycloalkanol of formula 2: where R1 represents a methyl or ethyl group, R2 represents hydrogen, R3 represents an ethyl, propyl, butyl, isobutyl or isoamyl group, R4 represents hydrogen and R5 represents hydrogen, or a methyl, ethyl, propyl, isobutyl or isoamyl group comprises the following steps: (1) carrying out an electrophilic substitution reaction of an alkyl group or precursor thereof, on an ortho-substituted alkylbenzene compound of formula 3: where R6 represents hydrogen, or a methyl or ethyl group; (2) hydrogenating the reaction product of step (1); (3) performing an elimination reaction on one or more reaction products of step (2) to produce one or more alkene products; and (4) hydrating the one or more alkene products of step (3) to provide a 3-alkylcycloalkanol of formula 2. The electrophilic substitution reaction of step (1) may be a Friedel-Crafts acylation, e.g. using an isopropyl ketone precursor, or a Friedel-Crafts alkylation, e.g. using an isobutyl group. The 3-alkylcycloalkanols, especially 3-(2-methylpropyl)-1-methylcyclohexanol, are useful fragrance materials and find use in perfumes and perfumed products.

    摘要翻译: 制备式2的3-烷基环烷醇的方法:其中R1表示甲基或乙基,R2表示氢,R3表示乙基,丙基,丁基,异丁基或异戊基,R4表示氢,R5表示氢,或甲基 ,乙基,丙基,异丁基或异戊基包括以下步骤:(1)在邻位取代的式3的烷基苯化合物上进行烷基或其前体的亲电取代反应:其中R 6表示氢,或甲基 或乙基; (2)氢化步骤(1)的反应产物; (3)对步骤(2)的一种或多种反应产物进行消除反应以产生一种或多种烯烃产物; (4)将步骤(3)的一种或多种烯烃产物水合以提供式2的3-烷基环烷醇。步骤(1)的亲电取代反应可以是Friedel-Crafts酰化反应,例如。 使用异丙基酮前体,或Friedel-Crafts烷基化,例如。 使用异丁基。 3-烷基环烷醇,特别是3-(2-甲基丙基)-1-甲基环己醇是有用的香料,可用于香料和香料产品中。