Multimetal Oxide Containing Silver, Vanadium And A Phosphor Group Element And The Use Thereof
    3.
    发明申请
    Multimetal Oxide Containing Silver, Vanadium And A Phosphor Group Element And The Use Thereof 审中-公开
    包含银,钒和荧光体组元素的多金属氧化物及其用途

    公开(公告)号:US20080019892A1

    公开(公告)日:2008-01-24

    申请号:US11629379

    申请日:2005-06-14

    IPC分类号: C01G31/00 B01J23/00

    摘要: Multimetal oxides corresponding to the general formula (I), processes for their preparation, precatalysts containing such oxides and catalysts made therefrom for gas phase partial oxidation of hydrocarbons: Aga-cQbMcV12Od.eH2O  (I)wherein a represents a number having a value of 5 to 9; Q represents an element selected from the group consisting of P, As, Sb, Bi and mixtures thereof; b represents a number having a value of 0.2 to 3; M represents a metal selected from the group consisting of Li, Na, K, Rb, Cs, Tl, Mg, Ca, Sr, Ba, Cu, Zn, Cd, Pb, Cr, Au, Al, Fe, Co, Ni, Ce, Mn, Nb, W, Ta, Mo and mixtures thereof; c represents a number having a value of less than 1; d represents a number having a value of which is determined by the valency and frequency of Ag, Q, M and V in the formula (I); and e represents a number having a value of 0 to 20; wherein the multimetal oxide has a crystal structure wherein its powder X-ray diffractogram includes reflections at at least 5 interplanar spacings selected from the group of 7.13 Å, 5.52 Å, 5.14 Å, 3.57 Å, 3.25 Å, 2.83 Å, 2.79 Å, 2.73 Å, 2.23 Å and 1.71 Å, each interplanar spacing value±0.04 Å.

    摘要翻译: 对应于通式(I)的多金属氧化物,其制备方法,含有此类氧化物的预催化剂和由其制备的催化剂用于烃的气相部分氧化:<?in-line-formula description =“In-line Formulas”end =“ 导线“>> Ag C C 其中a表示数值为5〜9的数字,其中a表示0〜5的整数。 Q表示选自P,As,Sb,Bi及其混合物的元素; b表示数值为0.2〜3的数; M表示选自Li,Na,K,Rb,Cs,Tl,Mg,Ca,Sr,Ba,Cu,Zn,Cd,Pb,Cr,Au,Al,Fe,Co,Ni, Ce,Mn,Nb,W,Ta,Mo及其混合物; c表示小于1的数字; d表示数值,其数值由式(I)中Ag,Q,M和V的化合价和频率决定; e表示0〜20的数, 其中所述多金属氧化物具有晶体结构,其中其粉末X射线衍射图包括选自7.13,5.52,5.14,3.57,3.25,2.83,2.79,2.73的至少5个面间距的反射 Å,2.23Å和1.71Å,每个晶面间距值±0.04Å。

    Production of aldehydes, carboxylic acids and/or carboxylic acid anhydrides by means of catalysts containing vanadium oxide, titanium dioxide, and antimony oxide
    6.
    发明申请
    Production of aldehydes, carboxylic acids and/or carboxylic acid anhydrides by means of catalysts containing vanadium oxide, titanium dioxide, and antimony oxide 有权
    通过含有氧化钒,二氧化钛和氧化锑的催化剂生产醛,羧酸和/或羧酸酐

    公开(公告)号:US20070060758A1

    公开(公告)日:2007-03-15

    申请号:US10557791

    申请日:2004-05-21

    IPC分类号: C07D307/89

    摘要: A description is given of a process for preparing aldehydes, carboxylic acids and/or carboxylic anhydrides, in particular phthalic anhydride, in which a gaseous stream comprising an aromatic hydrocarbon and molecular oxygen is passed at elevated temperature over a bed of a first catalyst and a bed which is made up of a second catalyst having a higher activity than the first catalyst and is located downstream of the first catalyst in the flow direction of the gaseous stream, wherein the catalytically active composition of the first catalyst comprises at least vanadium oxide, titanium dioxide and antimony oxide and the ratio of vanadium, calculated as V2O5, to antimony, calculated as Sb2O3, in the first catalyst is from 3.5:1 to 5:1. The source of antimony oxide used for the first catalyst is preferably particulate antimony trioxide having a mean particle size of from 0.5 to 5 μm. The process allows the desired oxidation products to be obtained in high yield over longer periods of time.

    摘要翻译: 给出了制备醛,羧酸和/或羧酸酐,特别是邻苯二甲酸酐的方法的描述,其中包含芳族烃和分子氧的气流在升高的温度下通过第一催化剂的床和 床,其由比第一催化剂高的活性的第二催化剂组成,并且位于气流的流动方向上位于第一催化剂的下游,其中第一催化剂的催化活性组合物至少包含氧化钒,钛 二氧化锑和氧化锑,以V 2 O 5 5计算的钒与锑的比例计算为Sb 2 O 3 在第一催化剂中为3.5:1至5:1。 用于第一催化剂的氧化锑的来源优选是平均粒径为0.5-5微米的颗粒状三氧化锑。 该方法允许在较长时间内以高产率获得所需的氧化产物。