介孔纳米γ-Al_2O_3对稀土镧(Ⅲ)的吸附性能研究  

Study on the Adsorptive Properties of rare earth La(Ⅲ) on Meso-porous Nanomater γ-Al_2O_3 Powder

作　　者：张运成[1] 冯青琴[2] 

机构地区：[1]安阳职业技术学院,河南安阳455000 [2]安阳师范学院化学化工学院,河南安阳455002

出　　处：《安阳师范学院学报》2011年第2期126-128,共3页Journal of Anyang Normal University

基　　金：河南省科技攻关重点资助项目(102102310403)

摘　　要：以溴化十六烷基三甲铵(CTAB)为模板剂,采用溶胶-凝胶法合成介孔纳米γ-Al2O3,用透射电镜(TEM)、比表面测定(BET)、X射线衍射(XRD)、和N2的吸附-脱附技术、Zetaplus电位测定,对所得的介孔纳米γ-Al2O3进行了表征。考察了介孔纳米γ-Al2O3在静态条件下对La(Ⅲ)的吸附性能。探讨了溶液的初始浓度、pH值、时间和温度对吸附性能的影响。结果表明:介孔纳米γ-Al2O3对La(Ⅲ)有很好的吸附性能,其吸附行为符合Freundlich吸附等温式。The meso-porous nanomaterγ-Al2O3 powders are synthesized by sol-gel method using Cetyltrimethyl Ammonium Bromide（CTAB） as template and characterized by TEM,XRD,BET,N2 adsorption-desorption isotherm and Zeta potential measurements.The adsorption characterization of the meso-porous nanomaterγ-Al2O3 powders to La（Ⅲ） in static condition are explored,and the effects of the concentration,pH,time,temperature on adsorption capacity are investigated.It shows that the meso-porous nanomaterγ-Al2O3 powders have strong adsorption capacity for rare earth La（Ⅲ） at a given pH value,and the adsorption process complies with Freundlich adsorption model.

关 键 词：介孔纳米γ-Al2O3 溶胶-凝胶法 吸附 La(Ⅲ) 

分 类 号：TQ133.1[化学工程—无机化工]