Preparation of zeolites
    44.
    发明授权
    Preparation of zeolites 失效
    沸石的制备

    公开(公告)号:US4551321A

    公开(公告)日:1985-11-05

    申请号:US476577

    申请日:1983-03-18

    摘要: A process for the preparation of zeolites of the ZSM-5 structural type from a mixture of SiO.sub.2 and Al(OH).sub.3 by hydrothermal crystallization in an aqueous amine solution, in the absence of alkali, at from 100.degree. to 200.degree. C., wherein the crystallization is carried out in the presence of a triamine, tetraamine and/or higher amine and the reaction mixture is formulated to have an SiO.sub.2 /Al.sub.2 O.sub.3 molar ratio defined by an equation which involves the chain length and number of amine groups of the amine employed, as well as to have certain molar ratios of H.sub.2 O/amine and amine/Al.sub.2 O.sub.3, and the use of these zeolites as catalysts for the conversion of alcohols and/or dialkyl ethers to olefins and/or aromatics.

    摘要翻译: 在不存在碱的情况下,在100〜200℃下,通过在胺水溶液中水热结晶,从SiO 2和Al(OH)3的混合物中制备ZSM-5结构型沸石的方法, 其中所述结晶在三胺,四胺和/或更高级胺的存在下进行,并且所述反应混合物被配制成具有由包含胺的链长度和胺基数的方程定义的SiO 2 / Al 2 O 3摩尔比 以及具有一定摩尔比的H 2 O /胺和胺/ Al 2 O 3,以及这些沸石作为用于将醇和/或二烷基醚转化为烯烃和/或芳族化合物的催化剂的用途。

    Oxidation catalyst, especially for the preparation of methacrylic acid
by gas phase oxidation of methacrolein
    46.
    发明授权
    Oxidation catalyst, especially for the preparation of methacrylic acid by gas phase oxidation of methacrolein 失效
    氧化催化剂,特别是通过气相氧化甲基丙烯醛制备甲基丙烯酸

    公开(公告)号:US4489170A

    公开(公告)日:1984-12-18

    申请号:US470942

    申请日:1983-03-01

    CPC分类号: B01J27/19 C07C51/252

    摘要: Oxidation catalysts which in addition to oxygen ions, with or without NH.sub.4.sup.+ ions, contain molybdenum, tungsten, phosphorus and antimony as basic components, in the atomic ratio Mo:W:P:Sb=12:0.1-3:0.1-4:0.1-3, and which are prepared in a conventional manner by combining molybdenum, phosphorus, antimony and tungsten compounds in aqueous solutions or suspensions, removing the water and calcining the residues, the combination being carried out at chloride ion concentrations of less than 0.3 mole per mole of molybdenum and in the presence of ions of monocarboxylic acids of 1 or 2 carbon atoms, dicarboxylic acids or hydroxycarboxylic acids, are particularly suitable for the gas phase oxidation of methacrolein to methacrylic acid.

    摘要翻译: 除了具有或不具有NH 4+离子的氧离子之外,氧原子催化剂以Mo,W:P:Sb = 12:0.1-3:0.1-4:0.1的原子比含有钼,钨,磷和锑作为碱性组分 -3,并且以常规方式通过在水溶液或悬浮液中组合钼,磷,锑和钨化合物来制备,除去水和煅烧残余物,所述组合在氯离子浓度小于0.3摩尔/ 摩尔钼,在1或2个碳原子的一元羧酸的离子存在下,二羧酸或羟基羧酸,特别适用于将甲基丙烯醛气相氧化成甲基丙烯酸。

    Preparation of zeolites
    47.
    发明授权
    Preparation of zeolites 失效
    沸石的制备

    公开(公告)号:US4404175A

    公开(公告)日:1983-09-13

    申请号:US268379

    申请日:1981-05-29

    摘要: A process for the preparation of zeolites of the ZSM-5 structural type from a mixture of SiO.sub.2 and Al(OH).sub.3 by hydrothermal crystallization in an aqueous amine solution, in the absence of alkali, at from 100.degree. to 200.degree. C., wherein the crystallization is carried out in the presence of a triamine, tetraamine and/or higher amine and the reaction mixture is formulated to have an SiO.sub.2 /Al.sub.2 O.sub.3 molar ratio defined by an equation which involves the chain length and number of amine groups of the amine employed, as well as to have certain molar ratios of H.sub.2 O/amine and amine/Al.sub.2 O.sub.3, and the use of these zeolites as catalysts for the conversion of alcohols and/or dialkyl ethers to olefins and/or aromatics

    摘要翻译: 在不存在碱的情况下,在100〜200℃下,通过在胺水溶液中水热结晶,从SiO 2和Al(OH)3的混合物中制备ZSM-5结构型沸石的方法, 其中所述结晶在三胺,四胺和/或更高级胺的存在下进行,并且所述反应混合物被配制成具有由包含胺的链长度和胺基数的方程定义的SiO 2 / Al 2 O 3摩尔比 并且具有一定摩尔比的H 2 O /胺和胺/ Al 2 O 3