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    VERFAHREN ZUR HERSTELLUNG VON ACROLEIN UND/ODER ACRYLSÄURE AUS PROPAN
    5.
    发明公开
    VERFAHREN ZUR HERSTELLUNG VON ACROLEIN UND/ODER ACRYLSÄURE AUS PROPAN 审中-公开
    VERFAHREN ZUR HERSTELLUNG VON ACROLEIN UND / ODERACRYLSÄUREAUS PROPAN

    公开(公告)号：EP1109774A1

    公开(公告)日：2001-06-27

    申请号：EP99941557.3

    申请日：1999-08-10

    申请人： BASF AKTIENGESELLSCHAFT

    发明人： MACHHAMMER, Otto ,  TENTEN, Andreas ,  JACHOW, Harald ,  HAUPT, Susanne ,  ARNOLD, Heiko ,  UNVERRICHT, Signe

    IPC分类号： C07C57/05 ,  C07C45/35 ,  C07C5/333

    CPC分类号： C07C51/215 ,  C07C45/33 ,  C07C45/35 ,  C07C51/252 ,  C07C47/22 ,  C07C57/04

    摘要： A method for producing acrolein and/or acrylic acid from propane, whereby the propane undergoes partial homogeneous and/or heterogeneous catalysed oxydehydrogenation in a first reaction step with molecular oxygen to form propane. The product gas mixture formed in the first reaction step is used to produce acrolein and/or acrylic acid by means of gas-phase catalytic propane oxidation. The method is characterised in that the molecular oxygen which is required in the first reaction area and is different from the recycled oxygen gas is added to the initial reaction gas mixture of the first reaction area as modified air containing nitrogen with the proviso that the nitrogen content of the modified air is lower than and the oxygen content of the modified air is greater than the corresponding air contents. The invention is further characterised in that at least one part of the molecular nitrogen contained in the flow of residual gas is separated from the residual gas flow before the residual gas flow is returned to the first reaction area.

    摘要翻译： 由丙烷生产丙烯醛和/或丙烯酸的方法，其中丙烷在第一反应步骤中与分子氧进行部分均相和/或多相催化氧化脱氢生成丙烷。 在第一反应步骤中形成的产物气体混合物用于通过气相催化丙烷氧化生产丙烯醛和/或丙烯酸。 该方法的特征在于，将第一反应区域所需的与再循环氧气不同的分子氧作为含有氮的改质空气添加到第一反应区域的初始反应气体混合物中，其条件是氮含量 的改性空气的氧含量低于并且改性空气的氧含量大于相应的空气含量。 本发明的特征还在于，在残余气流返回到第一反应区之前，残留气体流中所含的至少一部分分子氮与残余气流分离。

    VERFAHREN ZUR HERSTELLUNG VON PHTHALSÄUREANHYDRID DURCH KATALYTISCHE GASPHASENOXIDATION VON O-XYLOL/NAPHTHALIN-GEMISCHEN
    6.
    发明公开
    VERFAHREN ZUR HERSTELLUNG VON PHTHALSÄUREANHYDRID DURCH KATALYTISCHE GASPHASENOXIDATION VON O-XYLOL/NAPHTHALIN-GEMISCHEN 有权
    PROCESS FOR通过邻二甲苯/萘混合物的气相催化氧化反应生产邻苯二甲酸酐

    公开(公告)号：EP1082317A1

    公开(公告)日：2001-03-14

    申请号：EP99924921.2

    申请日：1999-05-10

    申请人： BASF AKTIENGESELLSCHAFT

    发明人： HEIDEMANN, Thomas ,  ARNOLD, Heiko ,  HEFELE, Gerhard ,  WANJEK, Herbert

    IPC分类号： C07D307/89 ,  C07C51/31 ,  C07C51/265 ,  C07C63/16

    CPC分类号： C07C51/265 ,  C07C51/313 ,  C07C63/16

    摘要： The invention relates to a method for producing phthalic anhydride by means of catalytic vapor-phase oxidation of o-xylol/naphthalene mixtures with molecular oxygen while using a catalyst (I) situated in a first layer on the gas entry side, said layer amounting to 25 to 75 percentage by volume of the total catalyst volume, containing, each time with regard to the catalytically effective mass, 1 to 10 wt.% vanadium oxide (calculated as V2O5), 1 to 10 wt.% antimony oxide (calculated as Sb2O3) and 80 to 98 wt.% titanium dioxide of the anatase type with a BET surface of 13 to 28 m2/g, and 0.05 to 1 wt.% cesium (calculated as Cs), deposited on a steatite support. In addition, the phthalic anhydride is produced by using a catalyst (II) situated in a second layer, said layer amounting to the remaining 75 to 25 percent by volume of the total catalyst volume, containing, each time with regard to the catalytically effective mass, 1 to 10 wt.% vanadium oxide (calculated as V¿2?O5), 1 to 10 wt.% antimony oxide (calculated as Sb2O3) and 80 to 98 wt.% titanium dioxide of the anatase type with a BET surface of 13 to 28 m?2¿/g, 0.01 to 1 wt.% phosphorous oxide (calculated as P) and 0.01 to 0.2 wt.% cesium (calculated as Cs), deposited on a steatite support. The cesium content of catalyst (II) is less than 15 wt.% of the cesium content of catalyst (I), and catalyst (I) and catalyst (II) are produced without adding compounds of niobium.