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本文用不同粒径的催化剂研究了孔扩散对甲烷化反应速率的影响,测定了该反应在CO低浓度下的反应级数。利用效率因子与Thiele模数的关系计算出有效扩散系数,并加以验証。同时用孔容与孔径分布按分区加和法估算了催化剂的弯曲系数与迷宫因子。
In this paper, the effects of pore diffusion on the methanation reaction rate were studied by using different particle size catalysts. The reaction order of the reaction at low concentration of CO was determined. The effective diffusion coefficient was calculated by the relationship between efficiency factor and Thiele modulus and verified. At the same time, the bending coefficient and maze factor of the catalyst were estimated by the partition summation method with pore volume and pore size distribution.