在 MoBiCe/SiO_2催化剂上,甲醇氧化制甲醛服从 Redox 机理动力学方程。当催化剂颗粒在30—40目时,反应在动力学区域进行;当颗粒增大至2mm,并提高反应温度时,反应在内扩散区域进行。试验潮得催化剂有效因子在0.70—0.42之间,随着反应温度的升高,内扩散影响加重。从催化剂有效因子一般计算方法出发,较好地进行了理论上的估算。 On the MoBiCe / SiO 2 catalyst, the oxidation of methanol to formaldehyde obeys the kinetic equation of Redox mechanism. The reaction takes place in the kinetic zone when the catalyst particles are at 30-40 mesh. When the particle size is increased to 2 mm and the reaction temperature is increased, the reaction proceeds in the inner diffusion zone. Test tide catalyst effective factor between 0.70-0.42, with the reaction temperature increases, the impact of internal diffusion increased. Starting from the general calculation method of catalyst effective factor, a good theoretical estimation is made.