催化中国, 中国催化分享 http://blog.sciencenet.cn/u/catachina 化学家(www.chemj.cn)

博文

文章分享:Arrhenius plots需要多少个数据点?至少5个

已有 1978 次阅读 2023-2-2 09:44 |个人分类:科研点滴启发|系统分类:科研笔记

1675302106350.png

https://www.sciencedirect.com/science/article/pii/S0021951723000428

Abstract

Arrhenius plots estimate the apparent activation energy (Ea) of catalytic reactions. The R-squared value (r2) often accompanies the Arrhenius plot to support its validity. However, no paper has quantitatively presented the minimum data points and the minimum r2 to validate the Ea. In this study, statistical analysis quantitatively visualized the relationship between the number of data points (np), r2, and the reliability of Ea. When np ≧ 5, the risk of underestimating the variance of Ea is suppressed significantly, making the Ea and its variance more reliable. Furthermore, to claim that two values of Ea are statistically different, the minimum required r2 was formulated and plotted as a function of Ea and np. The proposed formulas couple np and r2 to validate Ea quantitatively. This method is superior to the empirical method using r2 alone. This study produces tangible and quantitative guidance to control the reliability of the Arrhenius plot.






https://blog.sciencenet.cn/blog-3913-1374486.html

上一篇:Ind. Eng. Chem. Res.文章被录取为Supplementary Cover Art文章
下一篇:[转载]Journal of Hazardous Materials(JHM)投稿范围介绍
收藏 IP: 210.51.42.*| 热度|

1 郑永军

该博文允许注册用户评论 请点击登录 评论 (0 个评论)

数据加载中...

Archiver|手机版|科学网 ( 京ICP备07017567号-12 )

GMT+8, 2024-11-13 08:46

Powered by ScienceNet.cn

Copyright © 2007- 中国科学报社

返回顶部