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    • 80. 发明公开
    • Process for the preparation of catalytic systems for the oxidative dehydrogenation of alkylaromatics or paraffins
    • 一种制备Katalysatorzusammenstezungen用于烷基或石蜡的氧化脱氢过程
    • EP1160011A1
    • 2001-12-05
    • EP01201960.0
    • 2001-05-25
    • Enichem S.p.A.ENITECNOLOGIE S.p.A.
    • Ingallina, PatriziaCarluccio, LucianoPerego, CarloDel Piero, GastoneAssandri, Fabio
    • B01J23/22B01J23/18B01J21/10C07C5/42
    • C07C5/48B01J21/10B01J23/18B01J23/22B01J37/0236B01J37/08C07C2521/10C07C2523/18C07C2523/22C07C11/02C07C15/40
    • Process for preparing catalytic systems consisting of:

      a vanadium oxide;
      a bismuth oxide;
      and a carrier consisting of magnesium oxide,
      wherein the vanadium, expressed as V 2 O 5 , is in a quantity ranging from 2 to 35% by weight, the bismuth, expressed as Bi 2 O 3 , ranges from 2 to 40% by weight, the complement to 100 being the carrier,
      characterized in that it essentially comprises the following steps:

      preparation of solutions based on derivatives of the components of the catalytic system;
      mixing of the solutions prepared and optional aging;
      drying of the solution obtained;
      first heating, in the presence of air, of the solid obtained from the drying at a temperature ranging from room value to a temperature of between 290 and 310°C, for a time ranging from 1 to 3 hours;
      optional second heating, in the presence of air, of the solid for a time ranging from 0.5 to 2 hours at a constant temperature, ranging from 290 to 310°C, reached in the first heating;
      additional heating, in the presence of air, of the solid for a time ranging from 2 to 4 hours at the calcination temperature ranging from 600 to 850°C;
      calcination, in the presence of air, of the solid at a constant temperature, ranging from 600 to 850°C, reached in the additional heating, for a time ranging from 8 to 16 hours.
    • 用于制备催化体系由以下组成:一氧化钒; 氧化铋; 和载体由氧化镁的,worin钒,表示为V 2 O 5,是在一定量的35%,铋,表示为的Bi2O3,重量范围为2至重量为2〜40%时,补充至100是 载体,在它为特征的那样基本上包括以下步骤:制备基于所述催化体系的组分的衍生物的解决方案; 制备的溶液和任选的老化的混合; 得到的溶液的干燥; 第一加热,在空气的存在下,将固体从在温度范围从室温到值的温度下干燥所获得的290和310℃之间,在一段时间范围从1至3小时; 任选的第二加热,在空气的存在下,固体的时间范围从0.5至2小时以恒定的温度,范围从290至310℃,在第一加热达到; 额外的加热,在空气的存在下,固体的时间为2至在煅烧温度为600至850℃4小时; 煅烧在空气中以恒定的温度存在固体,小时,从600至850℃,在另外的加热达到,一时间范围为8至16