Calorimetric determination of surface areas: Possibilities of a modified Harkins and Jura procedure
Calorimetric determination of surface areas: Possibilities of a modified Harkins and Jura procedure
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表面积的量热测定：改进 Harkins 和 Jura 程序的可能性
DOI：
10.1016/0021-9797(79)90255-8
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发表时间：
1979
影响因子：
9.9
通讯作者：
J. Rouquerol
中科院分区：
文献类型：
--
作者：
S. Partyka;F. Rouquerol;J. Rouquerol
根据11种不同化学性质、比表面积范围为0.6 ~ 129 m2g−1的粉末所获得的结果，对Harkins和Jura测定粉末比表面积的浸液量热法进行了重新检验。使用水（以及较小程度的丁醇、戊醇和正癸烷）作为吸附物和浸泡液进行微量热测定。不到两层水层似乎就足以完全“屏蔽”固体表面。这导致了一种改进的程序，它避免了先前由颗粒间冷凝和预吸附层的厚度引起的缺点。实验重现性为±0.1 m2g−1±1%（实测值）。
The immersion calorimetric method of Harkins and Jura for determining specific surface areas of powders was reexamined in the light of results obtained with 11 powders of different chemical nature and having specific surface areas ranging from 0.6 to 129 m2g−1. Microcalorimetric determinations were performed, using water (and, to a smaller extent, butanol, pentanol, andn-decane) as the adsorbate and as the immersion liquid. Less than two water layers appears to be enough to “screen” completely the solid surface. This leads to a modified procedure which avoids the previous shortcomings arising from interparticulate condensation and also from the thickness of the preadsorbed layer. The experimental reproducibility is of ±0.1 m2g−1± 1% (of the measured value).