Investigation of surface properties and thermodynamic properties of high-temperature coal tar pitch using inverse gas chromatography

IF 2.2 4区化学 Q3 CHEMISTRY, PHYSICAL

Colloid and Polymer Science Pub Date : 2025-01-10 DOI:10.1007/s00396-025-05376-w

Yuan Li, Nuerbiya Yalikun, Qiang Wang, Shenglong Yu

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Abstract

The surface properties and thermodynamic properties of high-temperature coal tar pitch (HCTP) were determined by inverse gas chromatography at 323.15–353.15 K, and its surface dispersion free energy, Lewis acid–base constant, Florry-Huggins interaction parameters and Hildebrand solubility parameters of HCTP were determined. In the range of 323.15–353.15 K, the surface dispersion free energy of HCTP increased with the increase of temperature. Furthermore, the acid constant K_a of HCTP calculated as 0.259, the base constant K_b is 3.1, demonstrated that HCTP is an amphoteric alkaline material. The Florry-Huggins interaction parameters showed that tetrahydrofuran and butanol were good solvents for HCTP. The Hildebrand solubility parameters of HCTP at 323.15–353.15 K were 17.33, 16.76, 15.98, and 14.68 (J/cm³)^0.5, respectively, and showed a downward trend with the increase of temperature.

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来源期刊

Colloid and Polymer Science 化学-高分子科学

CiteScore

4.60

自引率

4.20%

发文量

111

审稿时长

2.2 months

期刊介绍： Colloid and Polymer Science - a leading international journal of longstanding tradition - is devoted to colloid and polymer science and its interdisciplinary interactions. As such, it responds to a demand which has lost none of its actuality as revealed in the trends of contemporary materials science.