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Preparation of Ag/TiO2-zeolite adsorbents, their desulfurization performance, and benzothiophene adsorption isotherms

  • Physical Chemistry of Surface Phenomena
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Abstract

A series of Ag/TiO2-NaY (TY) composite adsorbents were successfully prepared and characterized by X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy, BET, scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS) techniques. The effects of TiO2 and Ag contents on the structure and desulfurization performance of NaY zeolite were studied. The results show that anatase phase is the main form of TiO2 in AgTY adsorbent, and the Y-zeolite framework remained unchanged. AgTY with 6 wt % of Ag and 50 wt % of TiO2 exhibited the best desulfurization performance with the effluent volume of 63.2 mL/g at 10 mg/L sulfur breakthrough level (desulfurization rate of 95%). The benzothiophene (BT) removal performance of the various adsorbents follows the order: NaY < TiO2 < TY-50 < AgTY-50-6. The equilibrium data were modeled by Langmuir and Freundlich equations. The Langmuir model can describe well the adsorption isotherms of BT over AgTY.

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Authors and Affiliations

  1. College of Chemistry and Chemical Engineering, Northeast Petroleum University, Daqing, 163318, China

    Hua Song, Gang Yang, Deng Wang & Xue-Qin Wang

  2. Provincial Key Laboratory of Oil and Gas Chemical Technology, College of Chemistry and Chemical Engineering, Northeast Petroleum University, Daqing, 163318, China

    Hua Song & Xue-Qin Wang

  3. CPE Survey and Design Institute of Xinjiang Oil, Karamay, 834000, China

    Deng Wang

  4. Key Laboratory of Cancer Prevention and Treatment of Heilongjiang Province, Mudanjiang Medical University, Mudanjiang, 157011, China

    Hua-Lin Song

Authors
  1. Hua Song
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  2. Gang Yang
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  3. Hua-Lin Song
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  4. Deng Wang
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  5. Xue-Qin Wang
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Correspondence to Hua Song.

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Song, H., Yang, G., Song, HL. et al. Preparation of Ag/TiO2-zeolite adsorbents, their desulfurization performance, and benzothiophene adsorption isotherms. Russ. J. Phys. Chem. 91, 390–397 (2017). https://doi.org/10.1134/S0036024417020121

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  • DOI: https://doi.org/10.1134/S0036024417020121

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