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Technical note: Statistical analysis of pellet size variation in commercial catalysts
來源:周建成教授個人網站 發布日期:2016-04-08
作者:Wu, DF (Wu, DF); Zhou, JC (Zhou, JC); Li, YD (Li, YD)
關鍵字:catalyst; distribution; maximum likelihood; pellet size; quality of fit
論文來源:期刊
具體來源:PARTICLE & PARTICLE SYSTEMS CHARACTERIZATION
發表時間:2005年

The size of commercial catalyst pellets is distributed over a range of values. The suitability of the normal, log-normal and Weibull distributions to model pellet size variation was judged by three quality-of-fit criteria: the coefficient of determination, Akaike information criterion and Kolmogorov-Smirnov test, respectively. It is concluded that the normal distribution is most appropriate to represent the diameter distribution of the spherical pellets, though the lognormal distribution also gives a satisfactory fit. The Weibull distribution is the best one to represent the length distribution of the catalyst tablets. It is elucidated that a downward tail of the tablet length distribution results from the fluctuating characteristics of feeding for the individual tablets. It is also pointed out that pellet size distributed in a narrow window is beneficial to the industrial application of solid catalysts.

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