摘要
研究活性碳纤维负载钴酞菁(CoPc-ACF)对4-硝基苯酚(4-NP)的吸附特性,并从吸附等温线和吸附热力学角度探讨CoPc-ACF对4-NP的吸附作用机理。结果表明,4-NP在CoPc-ACF上的吸附遵循Freundlich吸附等温式,吸附过程为单分子层吸附且低温有利于4-NP的吸附。在298～348 K温度范围内,4-NP在CoPc-ACF上吸附热ΔH为-13.65 kJ/mol;吸附反应的吉布斯自由能ΔG<0,表明吸附为自发的放热过程,其主要吸附作用力为偶极键力和氢键力。
Batch studies are carried out for studying the adsorption behavior of 4-nitrophenol on Cobalt Phthalocyanine/Activated Carbon Fiber by adsorption isotherm model and adsorption thermodynamics.It is determined that best fitted adsorption isotherm model is Freundlich model.The adsorption of 4-nitrophenol is monolayer adsorption and low temperature is good for adsorption.The adsorption heat of 4-nitrophenol on Cobalt Phthalocyanine/Activated Carbon Fiber is-13.6511 kJ/mol and〈0 in the temperature of 298-348K.The results showed that adsorption of 4-NP is exothermic and spontaneous and the major forces are Bond dipole force and Hydrogen bond force.
出处
《浙江理工大学学报（自然科学版）》
2010年第3期348-352,共5页
Journal of Zhejiang Sci-Tech University(Natural Sciences)
基金
国家自然科学基金(50872124)
