文献类型：期刊文献

英文题名：Vapour pressure and vapourisation enthalpy of pyridine N-oxide

作者：Zeng, Zuo-Xiang[1];Chen, Jing[1];Xue, Wei-Lan[1];Zhang, Pan[1];Xie, Yuan[1]

机构：[1]E China Univ Sci & Technol, Inst Chem Engn, Shanghai 200237, Peoples R China

年份：2012

卷号：90

期号：3

起止页码：570

外文期刊名：CANADIAN JOURNAL OF CHEMICAL ENGINEERING

收录：;EI(收录号：20121614950210);WOS:【SCI-EXPANDED(收录号:WOS:000302607600006)】；

语种：英文

外文关键词：pyridine N-oxide; vapour pressure; enthalpy of vapourisation

摘要：The vapour pressure of pyridine N-oxide was measured using a boiling point method at different temperatures from 389.02 to 546.33?K and the constants of the Antoine equation for the substance were determined. The vapourisation enthalpy of pyridine N-oxide at the normal boiling point is calculated to be 58.8 +/- 1.8?kJ?mol-1. Based on Othmer's method, the standard enthalpy of vapourisation ${\rm \Delta }_{{\rm vap}} H(298.15\;{\rm K})$ is estimated to be 66.6 +/- 0.1?kJ?mol-1 by using pyridine as the reference substance. Furthermore, Watson equation is employed to verify the reliability of ${\rm \Delta }_{{\rm vap}} H(298.15\,{\rm K})$and the results demonstrate that the value of ${\rm \Delta }_{{\rm vap}} H(298.15\;{\rm K})$ is acceptable. (C) 2011 Canadian Society for Chemical Engineering