Citation: 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[J]. Acta Physico-Chimica Sinica, ;2013, 29(02): 371-376. doi: 10.3866/PKU.WHXB201211146 shu

Determination of the Adsorption of Xanthate on Mesoporous CuAl₂O₄ Using a Continuous Online In situ ATR-FTIR Technology

1.
School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, P. R. China

Received Date: 26 September 2012
Available Online: 14 November 2012
Fund Project: 国家自然科学基金(51274104, 50874052) (51274104, 50874052)国家重大科学研究计划(973) (2011CB933700)资助项目 (973) (2011CB933700)

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.
- In situ adsorption,
- Attenuated total reflection Fourier transform infrared spectroscopy,
- Online,
- Mesopore,
- CuAl₂O₄,
- Xanthate
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沈阳化工大学材料科学与工程学院沈阳 110142

Determination of the Adsorption of Xanthate on Mesoporous CuAl2O4 Using a Continuous Online In situ ATR-FTIR Technology

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Determination of the Adsorption of Xanthate on Mesoporous CuAl₂O₄ Using a Continuous Online In situ ATR-FTIR Technology