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Acta Phys. Chim. Sin.  2013, Vol. 29 Issue (02): 371-376    DOI: 10.3866/PKU.WHXB201211146
Determination of the Adsorption of Xanthate on Mesoporous CuAl2O4 Using a Continuous Online In situ ATR-FTIR Technology
GE Dong-Lai, FAN Ying-Ju, YIN Long, SUN Zhong-Xi
School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, P. R. China
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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 adsorptiondesorption 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 gradually 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.

Key wordsIn situ adsorption      Attenuated total reflection Fourier transform infrared spectroscopy      Online      Mesopore      CuAl2O4      Xanthate     
Received: 26 September 2012      Published: 14 November 2012
MSC2000:  O647  

The project was supported by the National Natural Science Foundation of China (51274104, 50874052) and National Key Basic Research Program of China (973) (2011CB933700).

Cite this article:

GE Dong-Lai, FAN Ying-Ju, YIN Long, SUN Zhong-Xi. Determination of the Adsorption of Xanthate on Mesoporous CuAl2O4 Using a Continuous Online In situ ATR-FTIR Technology. Acta Phys. Chim. Sin., 2013, 29(02): 371-376.

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