Adsorptive Removal of Thiophene by Cu-Modified Mesoporous Silica MCM-48 Derived from Direct Synthesis

Energy Fuels, 2011, 25 (7), pp 3093–3099

Adsorptive Removal of Thiophene by Cu-Modified Mesoporous Silica MCM-48 Derived from Direct Synthesis

Jia-Hui Shan†‡, Le Chen§, Lin-Bing Sun‡, and Xiao-Qin Liu*‡

liuxq@njut.edu.cn

School of Chemistry and Chemical Engineering, Nantong University, Nantong 226019, Jiangsu, China

State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing University of Technology, Nanjing 210009, Jiangsu, China

Key Laboratory of Fine Petrochemical Engineering, Changzhou University, Changzhou 213164, Jiangsu, China

Abstract

Authors prepared a series of Cu-containing mesoporous MCM-48 molecular sieves (Cu-MCM-48) using the direct synthesis method and used as the adsorbents for desulfurization of model fuel. The samples were characterized by X-ray power diffraction, N2 adsorption–desorption isotherms, Brunauer–Emmett–Teller specific surface area, transmission electron microscopy, inductively coupled plasma atomic emission spectrometry, and X-ray photoelectron spectroscopy.

Results demonstrate that the Cu-MCM-48 adsorbent with a copper content up to 10 wt % can still retain the uniform mesoporous framework of MCM-48. The proposed direct synthesis method gives better Cu dispersion and a higher content of active component Cu+ in the support than the conventional incipient impregnation method.

Desulfurization performance of these adsorbents is enhanced as a result.

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... and Cu + ) on exchanged Y zeolite adsorbents exhibited high sulfur adsorption capacity for thiophenic compounds, via p- complexation under ambient conditions. ... (as that in CuY zeolite) formed stronger π-complexation bonding with the thiophenic compounds than Ag + (in ...

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