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    Process for producing methacrolein and methacrylic acid
    6.
    发明公开
    Process for producing methacrolein and methacrylic acid 失效
    Verfahren zur Herstellung von Methacrolein undMethanylsäure。

    公开(公告)号：EP0608917A1

    公开(公告)日：1994-08-03

    申请号：EP94103673.3

    申请日：1990-12-06

    申请人： NIPPON SHOKUBAI CO., LTD.

    发明人： Onodera, Hideo ,  Ohno, Shigeru ,  Kurimoto, Ikuo ,  Aoki, Yukio

    IPC分类号： C07C27/00 ,  C07C45/32 ,  C07C45/35 ,  C07C47/22 ,  C07C51/21 ,  C07C57/05 ,  B01J23/88 ,  B01J37/08

    CPC分类号： B01J23/8873 ,  B01J8/06 ,  B01J23/002 ,  B01J23/88 ,  B01J23/887 ,  B01J23/8872 ,  B01J23/8875 ,  B01J23/8876 ,  B01J23/8885 ,  B01J27/0576 ,  B01J27/186 ,  B01J27/192 ,  B01J2208/025 ,  B01J2523/00 ,  C07C45/32 ,  C07C45/35 ,  C07C45/37 ,  C07C51/23 ,  C07C51/235 ,  C07C51/252 ,  C07C47/22 ,  C07C57/04 ,  B01J2523/15 ,  B01J2523/41 ,  B01J2523/54 ,  B01J2523/68 ,  B01J2523/69 ,  B01J2523/842 ,  B01J2523/845 ,  B01J2523/14 ,  B01J2523/31 ,  B01J2523/43 ,  B01J2523/51 ,  B01J2523/847 ,  B01J2523/11 ,  B01J2523/13 ,  B01J2523/22 ,  B01J2523/23 ,  B01J2523/3712 ,  B01J2523/47 ,  B01J2523/56 ,  B01J2523/24 ,  B01J2523/27 ,  B01J2523/34 ,  B01J2523/44 ,  B01J2523/64 ,  B01J2523/21 ,  B01J2523/25 ,  B01J2523/48 ,  B01J2523/53 ,  B01J2523/72 ,  B01J2523/12

    摘要： The present invention provides a process for producing methacrolein and methacrylic acid by subjecting at least one material selected from isobutylene, t-butanol and methyl t-butyl ether to gas phase catalytic oxidation with molecular oxygen or a molecular oxygen-containing gas using a fixed bed multi-tubular reactor.
    The process is characterized by the following (α), (β) and (γ).

    (α) There are used, as catalysts, compound oxides represented by the following general formula (I)



            Mo a W b Bi c Fe d A e B f C g D h E i O x



    (in the formula, Mo represents molybdenum, W represents tungsten, Bi represents bismuth, Fe represents iron, A represents at least one element selected from nickel and cobalt, B represents at least one element selected from alkali metals and thallium, C represents at least one element selected from alkaline earth metals, D represents at least one element selected from phosphorus, tellurium, antimony, tin, cerium, lead, niobium, manganese, arsenic and zinc, E represents at least one element selected from silicon, aluminum, titanium and zirconium, and O represents oxygen; a, b, c, d, e, f, g, h, i and x represent the numbers of atoms of Mo, W, Bi, Fe, A, B, C, D, E and O, respectively; when a is 12, b = 0-10, c = 0.1-20, d = 0.1-20, e = 2-20, f = 0-10, g = 0-10, h = 0-4, i = 0-30 and x = a value determined by the oxidation states of individual elements).
    (β) Each reaction tube has a plurality of reaction zones formed by dividing the catalyst layer in the reaction tube into two or more portions in the axial direction of the tube.
    (γ) The plurality of reaction zones are filled with catalysts shown in the above (α) having different activities, prepared by varying the types and/or amounts of the elements constituting the A group, B group, C group, D group and E group in the general formula (I) and/or with catalysts shown in the above (α) having different activities, prepared by varying the amount of at least one element of W, Bi and Fe in the general formula (I), in such a way that the activity of filled catalyst becomes higher as a material gas proceeds from the inlet to the outlet.

    摘要翻译： 本发明提供一种通过使用固定床将选自异丁烯，叔丁醇和甲基叔丁基醚中的至少一种材料用分子氧或含分子氧的气体进行气相催化氧化来制备异丁烯醛和甲基丙烯酸的方法 多管式反应器。 该方法的特征在于以下（α），（β）和（γ）。 （α）作为催化剂，使用由以下通式表示的复合氧化物（I> MoaWbBicFedAeBfCgDhEiOx（在该式中，Mo表示钼，W表示钨，Bi表示铋，Fe表示铁，A表示选自至少一种元素 B表示选自碱金属和铊中的至少一种元素，C表示选自碱土类金属中的至少一种元素，D表示选自磷，碲，锑，锡，铈，铅， 铌，锰，砷和锌，E表示选自硅，铝，钛和锆中的至少一种元素，O表示氧; a，b，c，d，e，f，g，h，i和x表示 分别为Mo，W，Bi，Fe，A，B，C，D，E和O的原子数;当a为12时，b = 0-10，c = 0.1-20，d = 0.1-20，e = 2-20，f = 0-10，g = 0-10，h = 0-4，i = 0-30，x =由各元素的氧化态确定的值）（β ）每个反应管具有多个反应区，其通过将反应管中的催化剂层在管的轴向上分成两个或更多个部分而形成。 （γ）通过改变构成A组，B组，C组，D组和E组的元件的类型和/或量来制备具有不同活性的上述（α）所示的多个反应区， 在通式（I）中通过改变通式（I）中的W，Bi和Fe中的至少一种元素的量而制备的具有不同活性的通式（I）中的基团和/或上述（α）所示的催化剂， 填充催化剂的活性随着材料气体从入口进入出口而变高的方式。

    OXIDATION OF CYCLOHEXYLBENZENE
    9.
    发明公开
    OXIDATION OF CYCLOHEXYLBENZENE 有权
    氧化蓖麻油

    公开(公告)号：EP2616436A1

    公开(公告)日：2013-07-24

    申请号：EP11751729.2

    申请日：2011-08-16

    申请人： ExxonMobil Chemical Patents Inc.

    发明人： DAKKA, Jihad, M. ,  BENITEZ, Francisco, M. ,  PATEL, Bryan, A. ,  MOZELESKI, Edmund, J.

    IPC分类号： C07C409/14 ,  C07C2/74 ,  C07C13/28 ,  C07C37/08 ,  C07C39/04 ,  C07C45/53 ,  C07C49/403

    CPC分类号： C07C409/14 ,  C07C2/74 ,  C07C37/08 ,  C07C45/32 ,  C07C45/53 ,  C07C51/00 ,  C07C249/04 ,  C07C407/00 ,  C07C2601/14 ,  C07D201/02 ,  C08G69/00 ,  Y02P20/52 ,  C07C13/28 ,  C07C49/403 ,  C07C39/04

    摘要： In a process for oxidizing a feed comprising cyclohexylbenzene, the feed is contacted with oxygen and an oxidation catalyst in a plurality of reaction zones connected in series, the contacting being conducted under conditions being effective to oxidize part of the cyclohexylbenzene in the feed to cyclohexylbenzene hydroperoxide in each reaction zone. At least one of the plurality of reaction zones has a reaction condition that is different from another of the plurality of reaction zones. The different reaction conditions may include one or more of (a) a progressively decreasing temperature and (b) a progressively increasing oxidation catalyst concentration as the feed flows from one reaction zone to subsequent reaction zones in the series.

    摘要翻译： 在用于氧化包含环己基苯的进料的方法中，将进料与串联连接的多个反应区中的氧和氧化催化剂接触，在有效地将进料中的环己基苯的一部分氧化成环己基苯氢过氧化物的条件下进行 在每个反应区。 多个反应区中的至少一个具有与多个反应区中的另一个不同的反应条件。 不同的反应条件可以包括（a）逐渐降低的温度和（b）随着进料从一个反应区流到该系列中的后续反应区的逐渐增加的氧化催化剂浓度中的一个或多个。