Process for preparing acrylic acid from methanol and acetic acid
    7.
    发明授权
    Process for preparing acrylic acid from methanol and acetic acid 有权
    从甲醇和乙酸制备丙烯酸的方法

    公开(公告)号:US09593065B2

    公开(公告)日:2017-03-14

    申请号:US14794955

    申请日:2015-07-09

    Applicant: BASF SE

    Abstract: A process for preparing acrylic acid from methanol and acetic acid, comprising (i) contacting a gaseous stream S0 comprising methanol, oxygen and inert gas with an oxidation catalyst to obtain a gaseous stream S1 comprising formaldehyde and inert gas; (ii) removing at least a portion of the inert gas present in S1 from at least a portion of the formaldehyde present in S1 by absorbing this formaldehyde in an absorbent to obtain a gaseous stream S2 comprising the portion of the inert gas removed, and to obtain a stream S3 comprising absorbent and absorbate comprising formaldehyde; (iii) optionally removing a portion or the entirety of the absorbent present in stream S3, such that a stream S3a remains from stream S3, and producing a stream S4 from at least stream S3 or stream S3a and a stream S5 comprising acetic acid; and (iv) contacting stream S4 in gaseous form with an aldol condensation catalyst to obtain a gaseous stream S6 comprising acrylic acid.

    Abstract translation: 一种从甲醇和乙酸制备丙烯酸的方法,包括(i)使包含甲醇,氧气和惰性气体的气流S0与氧化催化剂接触以获得包含甲醛和惰性气体的气流S1; (ii)通过在吸收剂中吸收该甲醛从S1中存在的甲醛的至少一部分除去S1中存在的至少一部分惰性气体,以获得包含去除部分惰性气体的气流S2,并且 获得包含含甲醛的吸收剂和吸收剂的流S3; (iii)任选地除去流S3中存在的吸收剂的一部分或全部,使得流S3a从流S3保留,并从至少流S3或流S3a和包含乙酸的流S5产生流S4; 和(iv)将气态的流S4与醛醇缩合催化剂接触以获得包含丙烯酸的气流S6。

    Stable support for Fischer-Tropsch catalyst
    10.
    发明授权
    Stable support for Fischer-Tropsch catalyst 有权
    稳定支持费 - 托催化剂

    公开(公告)号:US09233360B1

    公开(公告)日:2016-01-12

    申请号:US14482313

    申请日:2014-09-10

    Abstract: A process has been developed for preparing a Fischer-Tropsch catalyst precursor and a Fischer-Tropsch catalyst made from the precursor. The process includes contacting a gamma alumina catalyst support material with a first solution containing a compound containing zinc and optionally containing P, Ti, V, Co, Ga, Ge, Mo, W and/or Pr to obtain a modified catalyst support material. The modified catalyst support material is calcined at a temperature of at least 500° C. The calcined modified catalyst support has a pore volume of at least 0.4 cc/g. The modified catalyst support is less soluble in acid solutions than an equivalent unmodified catalyst support. The modified catalyst support is contacted with a second solution which includes a precursor compound of an active cobalt catalyst component to obtain a catalyst precursor. The catalyst precursor is reduced to activate the catalyst precursor to obtain the Fischer-Tropsch catalyst. The catalyst has enhanced hydrothermal stability as measured by losing no more than 20% of its pore volume when exposed to water vapor.

    Abstract translation: 已经开发了制备费 - 托催化剂前体和由前体制备的费 - 托催化剂的方法。 该方法包括使γ氧化铝催化剂载体材料与含有锌化合物和任选地含有P,Ti,V,Co,Ga,Ge,Mo,W和/或Pr的第一溶液接触,以获得改性的催化剂载体材料。 改性的催化剂载体材料在至少500℃的温度下煅烧。煅烧的改性催化剂载体的孔体积至少为0.4cc / g。 改性的催化剂载体在酸溶液中比相当的未改性的催化剂载体更难溶解。 将改性的催化剂载体与包含活性钴催化剂组分的前体化合物的第二溶液接触以获得催化剂前体。 催化剂前体被还原以活化催化剂前体以获得费 - 托催化剂。 催化剂具有增强的水热稳定性,当暴露于水蒸气时,其通过损失其不超过其孔体积的20%来测量。

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