文献类型：期刊文献

英文题名：NEW APPROXIMATIONS OF THE TEMPERATURE INTEGRAL FOR NONISOTHERMAL KINETICS

作者：Quanyin R.[1] Su Y.[1]

第一作者：QUANYIN, R

通信作者：QUANYIN, R[1]

机构：[1]Research Institute of Chemical Processing and Utilization of Forest Products, Chinese Academy of Forestry, Nanjing, 210037, China

年份：1995

卷号：44

期号：5

起止页码：1147-1154

外文期刊名：JOURNAL OF THERMAL ANALYSIS

收录：;Scopus(收录号：2-s2.0-0029304692);WOS:【SCI-EXPANDED(收录号:WOS:A1995RC29800017)】；

语种：英文

外文关键词：KINETICS; THERMAL ANALYSIS

摘要：The accuracy and scope of application of previously reported approximations of the temperature integral were evaluated. The exact solution was obtained independently by solving the temperature integral numerically be Simpson's rule, the trapezoidal rule and the Gaussian rule. Two new approximations have been proposed: P(X) = e(-X)(1/X(2))(1-2/X)/(1-5.2/X(2)) P(X) = e(-X)(1/X(2))(1-2/X)/(1-4.6/X(2)) where X = E/RT. The first equation gives higher accuracy, with a deviation of less than 1% and 0.1% from the exact solution for X greater than or equal to 7 and X greater than or equal to 10, respectively. The second equation has a wider scope of application, with a deviation of less than 1% for X greater than or equal to 4 and of less than 0.1% for X greater than or equal to 35.