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    Preparation of aliphatic carboxylic acids in the presence of heteropolyacid catalysts
    22.
    发明授权
    Preparation of aliphatic carboxylic acids in the presence of heteropolyacid catalysts 失效
    在杂多酸催化剂存在下制备脂肪族羧酸

    公开(公告)号：US6114274A

    公开(公告)日：2000-09-05

    申请号：US443450

    申请日：1995-05-18

    申请人： Elisabeth Bordes ,  Michel Gubelmann ,  Laurent Tessier

    发明人： Elisabeth Bordes ,  Michel Gubelmann ,  Laurent Tessier

    IPC分类号： B01J27/18 ,  B01J27/199 ,  C07C51/215 ,  C07C51/225 ,  B01J27/198 ,  C07C51/31

    CPC分类号： C07C51/215 ,  B01J23/002 ,  B01J27/199 ,  B01J2523/00

    摘要： The aliphatic carboxylic acids, e.g., acetic acid, are selectively prepared, even on an industrial scale, by controlledly oxidizing the corresponding alkanes, e.g., ethane, with a source of oxygen, in the presence of a catalytically effective amount of an advantageously supported heteropolyacid catalyst having the formula (I):[A.sub.a B.sub.b ].sub.f [C.sub.c D.sub.d E.sub.e O.sub.x ].sup.f-(I)in which A is at least one monovalent cation selected from among hydrogen, an alkali metal, or the ammonium ion; B is VO.sup.2 +, VO.sup.3 +, an alkaline earth metal ion, or an ion of a metal of Groups VII A, VIII, I B, IV B and V B of the Periodic Table; C is Mo and/or W; D is phosphorus, arsenic, antimony, silicon, germanium and/or boron; E is vanadium, optionally in combination with at least one metal of Groups V A, VII A and VIII of the Periodic Table or chromium; f=a+.alpha.b wherein .alpha. depends on the charge of the ion B, which is equal to 2, 3 or 4; c is a number ranging from 5 to 20-e; d is a number ranging from 1 to 5; and e is a number ranging from 1 to 9.

    摘要翻译： 通过在催化有效量的有利负载的杂多酸的存在下，通过有选择地制备脂肪族羧酸，例如乙酸，即使在工业规模上，通过可控地氧化相应的烷烃，例如乙烷与氧源 具有式（I）的催化剂：[AaBb] f [CcDdEex] f-（I）其中A是选自氢，碱金属或铵离子中的至少一种一价阳离子; B是VO2 +，VO3 +，碱土金属离子或元素周期表第VIIA，VIII，IB，IVB和VB族金属的离子; C是Mo和/或W; D是磷，砷，锑，硅，锗和/或硼; E是钒，任选地与元素周期表第ⅤA，ⅦA和Ⅷ族的至少一种金属或铬组合; f = a +αb其中α取决于离子B的电荷，其等于2,3或4; c为5〜20-e的数字; d为1〜5的数字; e是从1到9的数字。

    Dehydrocyanation of aliphatic dinitriles
    23.
    发明授权
    Dehydrocyanation of aliphatic dinitriles 失效
    脂肪族二腈的脱氢氰化

    公开(公告)号：US5352819A

    公开(公告)日：1994-10-04

    申请号：US63677

    申请日：1993-05-20

    申请人： Michel Gubelmann ,  Christian Maliverney ,  Helene Pernot

    发明人： Michel Gubelmann ,  Christian Maliverney ,  Helene Pernot

    IPC分类号： C07C253/30 ,  C07C293/30

    CPC分类号： C07C253/30

    摘要： Branched saturated dinitrile byproducts, e.g. 2-methylglutaronitrile, 2-ethylsuccinonitrile and mixtures thereof, are converted into useful ethylenic nitriles by dehydrocyanating same, in vapor phase, in the presence of an at least partially acidified cation exchange substrate, notably a molecular sieve, clay, acid oxide or lamellar phosphate.

    摘要翻译： 支链饱和二腈副产物，例如 2-甲基戊二腈，2-乙基琥珀腈及其混合物通过在气相中，在至少部分酸化的阳离子交换基质，特别是分子筛，粘土，酸性氧化物或层状磷酸盐存在下，通过其脱氢氰化而转化为有用的烯属腈 。