| 摘要 |
PURPOSE:To obtain the title substance at a relatively low reaction temperature and in a short contact time, by the catalytic reaction of propylene with molecular oxygen in the vapor phase at high tmperature in the presence of a catalyst obtained by adding Zr, Ca and/or Ca, and Ti to Mo, Bi, Fe and Co. CONSTITUTION:In the preparation of acrolein by the reaction of propylene with molecular oxygen in the vapor phase at high temperature in the prescence of a catalyst, a substance having the composition of formula (X is Ca or Zn, a-h show the number of atoms, and when b is 1, a is 5-20, C is 0.2-5, d is 1-10, e and f are 0.01-2, g is 0.01-1 and h is the number decided spontaneously) is used as the catalyst. This catalyst is easily prepared by a known preparation method of oxidation catalysts, using compounds containing constituent elements (e.g. oxides, salts) as a starting material, and calcined at 400-800 deg.C for 1-20hr at the last step. EFFECT:Use of a carrier is not necessarily required, and high activity can be maintained for a long time. |
