Micro-combustion calorimetry aiming at 1 mg samples

被引：16

作者：

Nagano, Y ^{[1
]}

Sugimoto, T ^{[1
]}

机构：

[1] Osaka Univ, Fac Sci, Microcalorimetry Res Ctr, Toyonaka, Osaka 5600043, Japan

来源：

JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY | 1999年 / 57卷 / 03期

关键词：

micro-combustion calorimetry; standard enthalpy of formation of salicylic acid;

D O I：

10.1023/A:1010166813912

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

A micro-combustion calorimeter was developed. The small energy equivalent (ca. 68 J K-1) of this calorimeter makes it possible to measure combustion energies of very small samples. The energy equivalent was determined by burning 2 mg of benzoic acid. The standard deviation of the mean energy equivalent was reduced to 0.014% in 5 experiments. The standard massic energy of combustion of salicylic acid and the standard deviation of the mean were determined to be -21871+/-5 Jg(-1), which agrees well with the literature value s. The standard molar enthalpy of formation of salicylic acid was derived as -59 1.2+/-1.7 kJmol(-1).

引用

页码：867 / 874

页数：8

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