Deeply reduced oxidation catalyst and its use in preparing N-(phosphonomethyl) glycine compounds
    1.
    发明授权
    Deeply reduced oxidation catalyst and its use in preparing N-(phosphonomethyl) glycine compounds 有权
    深度还原氧化催化剂及其在制备N-(膦酰基甲基)甘氨酸化合物中的应用

    公开(公告)号:US08143441B2

    公开(公告)日:2012-03-27

    申请号:US11447236

    申请日:2006-06-05

    IPC分类号: C07F9/38 B01J37/18

    摘要: This invention relates to an improved catalyst, comprising a carbon support having a noble metal at its surface, for use in catalyzing liquid phase oxidation reactions, especially in an acidic oxidative environment and in the presence of solvents, reactants, intermediates, or products which solubilize noble metals; a process for the preparation of the improved catalyst; a liquid phase oxidation process using such a catalyst wherein the catalyst exhibits improved resistance to noble metal leaching, particularly in acidic oxidative environments and in the presence of solvents, reactants, intermediates, or products which solubilize noble metals; and a liquid phase oxidation process in which N-(phosphonomethyl)iminodiacetic acid (i.e., “PMIDA”) or a salt thereof is oxidized to form N-(phosphonomethyl)glycine (i.e., “glyphosate”) or a salt thereof using such a catalyst wherein the oxidation of the formaldehyde and formic acid by-products into carbon dioxide and water is increased.

    摘要翻译: 本发明涉及一种改进的催化剂,其包括在其表面具有贵金属的碳载体,用于催化液相氧化反应,特别是在酸性氧化环境中和在溶剂存在下,反应物,中间体或溶解产物 贵金属; 改进的催化剂的制备方法; 使用这种催化剂的液相氧化方法,其中催化剂表现出改善的贵金属浸出耐受性,特别是在酸性氧化环境和溶剂存在下,反应物,中间体或增溶贵金属的产物; 和其中N-(膦酰基甲基)亚氨基二乙酸(即“PMIDA”)或其盐被氧化以形成N-(膦酰基甲基)甘氨酸(即“草甘膦”)或其盐的液相氧化方法, 催化剂,其中甲醛和甲酸副产物氧化成二氧化碳和水增加。

    Phosphorous/vanadium oxide catalyst and process of preparation thereof
    3.
    发明授权
    Phosphorous/vanadium oxide catalyst and process of preparation thereof 失效
    磷/氧化钒催化剂及其制备方法

    公开(公告)号:US5275996A

    公开(公告)日:1994-01-04

    申请号:US887254

    申请日:1992-05-22

    摘要: An activated porous phosphorus/vanadium oxide catalyst adapted for the catalytic oxidation of a hydrocarbon to produce a carboxylic acid anhydride. The catalyst comprises shaped bodies having a B.E.T. surface area of at least about 15 m.sup.2 /g, an average vanadium oxidation state of between about 4.0 and about 4.5, a total pore volume of at least about 0.15 cc/g, a normalized apparent shaped body density of between about 1.25 and about 2.0 g/cc, and a crush strength of at least about 4 pounds. At least about 5% of the pore volume of the catalyst is constituted of pores having a diameter of at least about 0.8 microns, and at least about 4% of the pore volume is constituted of pores having a diameter of at least about 10 microns. The catalyst is prepared by mixing a particulate phosphorus/vanadium oxide precursor with a pore modification agent to produce a modified catalyst precursor composition, forming the modified precursor composition into a predetermined shape, and removing the pore modification agent substantially at a temperature below 300.degree. C.

    摘要翻译: 一种活化的多孔磷/氧化钒催化剂,适于催化氧化烃以产生羧酸酐。 催化剂包括具有B.E.T.的成形体。 表面积为至少约15m 2 / g,平均钒氧化态为约4.0至约4.5,总孔体积为至少约0.15cc / g,归一化表观体密度为约1.25至约2.0 g / cc,压碎强度至少约4磅。 催化剂的孔体积的至少约5%由直径为至少约0.8微米的孔构成,孔体积的至少约4%由直径至少为约10微米的孔构成。 通过将颗粒状磷/钒氧化物前体与孔改性剂混合以制备改性催化剂前体组合物,将改性前体组合物形成预定形状并且基本上在低于300℃的温度下除去孔改性剂来制备催化剂 。

    Oxidation and ammoxidation process
    5.
    发明授权
    Oxidation and ammoxidation process 失效
    氧化和氨氧化过程

    公开(公告)号:US4565658A

    公开(公告)日:1986-01-21

    申请号:US693634

    申请日:1985-01-22

    申请人: Jerry R. Ebner

    发明人: Jerry R. Ebner

    摘要: A process for oxidation and ammoxidation of hydrocarbons using catalysts having the empirical formulaBiMo.sub.a V.sub.b Sb.sub.c O.sub.xwherein a is from 0.5-2, b is from 0.12-3, c is from 0.12 to 10, d is 0-0.5 and x is selected to satisfy the valence requirements of the other elements present. M is one or more elements selected from Groups I-A, II-A, III-A, V-A, VI-A, I-B, IV-B, VI-B and VII-B of the Periodic Table.The catalyst is prepared by forming a slurry of vanadium antimonate component, a bismuth molybdate component, and optionally the compound M and/or a support material, drying the slurry, and calcining to form the catalyst.The process is useful for production of acrylonitrile from propylene, ammonia, and an oxygen-containing gas.

    摘要翻译: 使用具有经验式BiMoaVbSbcOx的催化剂进行烃的氧化和氨氧化的方法,其中a为0.5-2,b为0.12-3,c为0.12至10,d为0-0.5,x选择为满足价态 要求存在的其他要素。 M是选自元素周期表的I-A,II-A,III-A,V-A,VI-A,I-B,IV-B,VI-B和VII-B族中的一种或多种元素。 通过形成锑酸锑组分,钼酸铋组分和任选的化合物M和/或载体材料的浆料,干燥浆料,并煅烧以形成催化剂来制备催化剂。 该方法可用于从丙烯,氨和含氧气体制备丙烯腈。

    Process for preparing N-phosphonomethylamino carboxylic acids
    8.
    发明授权
    Process for preparing N-phosphonomethylamino carboxylic acids 失效
    制备N-膦酰基甲基氨基羧酸的方法

    公开(公告)号:US5703273A

    公开(公告)日:1997-12-30

    申请号:US674211

    申请日:1996-07-01

    IPC分类号: C07F9/38

    CPC分类号: C07F9/3813

    摘要: A process for preparing N-hydroxyalkylaminomethyl-phosphonic acid or salts thereof which comprises contacting an alkanolamine, formaldehyde and a trialkyl phosphite under suitable reaction conditions to produce a reaction mixture, and hydrolyzing the reaction mixture under neutral, acidic or basic conditions. In one embodiment, the N-hydroxyalkylaminomethylphosphonic acid or salts thereof is catalytically oxidized to produce an N-phosphonomethylaminocarboxylic acid or salts thereof.

    摘要翻译: 一种N-羟烷基氨基甲基膦酸或其盐的制备方法,其包括在合适的反应条件下使链烷醇胺,甲醛和亚磷酸三烷基酯接触以产生反应混合物,并在中性,酸性或碱性条件下水解反应混合物。 在一个实施方案中,N-羟烷基氨基甲基膦酸或其盐被催化氧化以产生N-膦酰基二甲基氨基羧酸或其盐。