固体物理吸附气体过程热力学状态函数变化的测定

Determination of Thermodynamic Stare Function in the Course of Physical Adsorption

利用Ｓｏｒｐｔｏｍａｔｉｃ１９００自动吸附仪测定出固体γ－Ａｌ２Ｏ３在不同温度下物理吸附氮气的等温线，根据热力学原理近似计算出该物理吸附过程的微分吸附热和积分吸附热．根据本文导出的公式，计算出了该过程吸附体系的内能、焓、熵、亥姆霍兹自由能和吉布斯自由能等热力学状态函数随吸附量的变化率．

While nitrogen was physically adsorbed on γ-Al2O3 at 77 K or so, the Sorptomatic1900 was used to measure the absorption isotherms. According thermodynamics and the isotherms,the differential heat, integral heat and the chanses of the internal energy, the enthalpy, the entropy, the Helmholtz free energy and the Gibbs free energy in the course of physicai adsorptionwere approximately calculated.