摘要
以玉米芯为原料,利用微波预处理技术和酯化相结合的方法制备羧基官能团化玉米芯(MC),研究其对稀有金属钯(Ⅱ)的吸附性能。结果表明,Freund lich吸附等温式能较好地描述不同温度下的实验数据。对吸附热力学参数ΔH0、ΔS0和ΔG0的计算表明,吸附过程是自发的、吸热的和熵增加的过程,升高温度有利于MC对Pd(Ⅱ)的吸附。
Using corncob as the raw material,this article applied microwave pretreatment technique and esterification method to prepare carboxyl functionalized corncob（MC）.The adsorption properties of Pd（Ⅱ） onto MC were investigated.The results showed that Freundlich adsorption isotherm can better describe experimental data at different temperature.The adsorption thermodynamics parameters such as ΔH0、ΔS0 and ΔG0 indicated that adsorption was a spontaneous,endothermic and entropy increase process. Higher temperature was conductive to adsorb Pd（ Ⅱ ） onto MC.
出处
《云南化工》
CAS
2009年第6期8-10,共3页
Yunnan Chemical Technology
关键词
玉米芯
羧基官能化
钯(Ⅱ)
吸附
corncob
carboxyl functionalized
palladium（Ⅱ）
adsorption
