物理化学学报Issue(2)：371-376,6.DOI:10.3866/PKU.WHXB201211146
连续在线原位ATR-FTIR技术测定介孔CuAl2O4对黄药的吸附
Determination of the Adsorption of Xanthate on Mesoporous CuAl2O4 Using a Continuous Online In situ ATR-FTIR Technology
摘要
Abstract
In this study, mesoporous nano CuAl2O4 was synthesized through a coprecipitation method using simple mixed templates consisting of butylamine and dodecanol. The sample was characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), and nitrogen adsorption-desorption techniques. The absorption of butyl and octyl xanthate from aqueous solution onto the synthesized mesoporous CuAl2O4 solid surfaces was studied by a continuous, online, in situ attenuated total reflection Fourier transform infrared spectroscopy (ATR-FTIR) technique. The CuAl2O4 membrane used in the adsorption experiments was prepared on a germanium internal reflection element using the chemical bath deposition method. During the adsorption process, the characteristic peak height of xanthate at 1200 and 1040 cm-1 emerged and gradual y increased. By monitoring changes in the peak height at 1200 cm-1, which was assigned to the stretching vibration caused by C-O-C of the adsorbed xanthate molecules, the adsorption kinetics were studied. The adsorption results show that mesoporous CuAl2O4 has a high chemisorption capacity for xanthate, which reaches 236 and 300 mg·g-1 for butyl and octyl xanthate, respectively, within 100 min. The adsorption kinetics can be described by a pseudo-second-order reaction model.关键词
原位吸附/衰减全反射傅里叶变换红外光谱/在线/介孔/CuAl2O4/黄药Key words
In situ adsorption/Attenuated total reflection Fourier transform infrared spectroscopy/Online/Mesopore/CuAl2O4/Xanthate分类
化学化工引用本文复制引用
葛东来,范迎菊,尹龙,孙中溪..连续在线原位ATR-FTIR技术测定介孔CuAl2O4对黄药的吸附[J].物理化学学报,2013,(2):371-376,6.基金项目
The project was supported by the National Natural Science Foundation of China (51274104,50874052) and National Key Basic Research Program of China (973)(2011CB933700).@@@@国家自然科学基金(51274104,50874052)和国家重大科学研究计划(973)(2011CB933700)资助项目 （51274104,50874052）
