Abstract: The number of active sites for nine kinds of coal char at high temperature were measured in CO2 gasification condition. Experimental results showed that the relationship of "volcano" shape between gasification rates and x and several ten times difference of gasification rates among a variety of coal char could be explained by the difference of number of active sites of coal char. The study results of nine kinds of coal char indicated that gasification rate per active site followed the equation:

摘要： 在煤焦与二氧化碳气化条件之下,测得了高温时9种煤焦的活性点数.实验研究发现,气化速率与转化率呈火山型曲线关系以及不同煤焦之间气化速率数10倍的差别,都可由煤焦具有活性点数的差异解释.由6种煤焦研究表明,所有煤焦单位活性点数的气化速率遵从如下关系(dx/dt)_(x=0.5)=407exp[-125/(RT)]可统一估价多种煤焦与二氧化碳的气化速率.