摘要
采用静态法 ,研究了柠檬酸在烟草上的吸附和解吸附性能以及共存物质对吸附能力的影响 ,测定了在不同浓度、温度下的吸附速率曲线和吸附等温线 ,并估算出吸附热。结果表明 ,柠檬酸在烟草上的吸附量大 ,吸附速率快 ,属物理吸附。当柠檬酸的浓度小于 0 .0 0 5mol/L时 ,吸附等温线呈直线型 ;而当柠檬酸的浓度增大到 0 .15mol/L的范围内时 ,吸附等温线则呈现典型的“台阶”
The adsorptive and desorptive properties of citric acid on tobacco, as well as the influences of coexistent substance on adsorption ability, were studied by using static method. Adsorption rate curves and adsorption isotherms on different temperature and concentration were determined, and also adsorption heat was calculated. The results show that adsorbing capacity of tobacco for citric acid is high, rate of adsorption is fast, and adsorption belongs to physisorption. When concentration of citric acid is less than 0.005, 0.08and 0.15mol/L adsoption isotherm is linear, Langmuir type, and typical 'step' type, respectively.
出处
《南昌大学学报（理科版）》
CAS
北大核心
2002年第2期121-123,共3页
Journal of Nanchang University(Natural Science)
基金
南昌大学 2 11工程资助项目 (10 3- 2 )
