用玻璃流动外循环无梯度反应器研究了Mo—Bi—Ce/SiO_2催化剂上丁烯-2氧化脱氢的内扩散影响.确定了催化剂的有效因子,多孔催化剂的有效因子随反应温度的升高而减小.在内扩散区域的反应活化能为丁烯-2扩散活化能、动力学区域反应活化能的算术平均值.在内扩散区域的丁烯氧化脱氢生成丁二烯的选择性用经验式描述. The influence of the internal diffusion of the oxidative dehydrogenation of butene-2 ​​on the Mo-Bi-Ce / SiO 2 catalyst was investigated by a glass flow external circulation gradientless reactor. The effective factor of the catalyst was determined. The effective factor of the porous catalyst increased with the reaction temperature While the reaction activation energy in the inner diffusion region is the arithmetic mean of the activation energies of kinetics and the activation energies of the butene-2. The selectivity of butadiene to butadiene by oxidative dehydrogenation in the inner diffusion region Empirical description.