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Issue 27, 2019, Issue in Progress
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Synthesis of bimetallic–organic framework Cu/Co-BTC and the improved performance of thiophene adsorption

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Abstract

A bimetallic–organic porous material (Cu/Co-BTC) with a paddle-wheel structure has been successfully synthesized by a solvothermal approach. The as-synthesized materials were characterized by XRD, SEM, ICP-AES, UV-Vis, TGA and N2 adsorption at 77 K. The prepared Cu/Co-BTC samples were investigated in thiophene (TP) adsorption from model gasolines by the fixed bed adsorption method at 298 K. The results showed that only a small amount of Co could be successfully introduced into the framework of HKUST-1, and the introduction of Co had little effect on the crystalline structure, morphology, porosity, and thermal stability. The bimetallic Cu/Co-BTC with a Cu/Co ratio of 174 displayed significantly improved adsorption desulfurization performance, showing an increase in breakthrough volume by 30% compared with HKUST-1, implying that the central metal in the MOF plays an important role in adsorption desulfurization. The addition of toluene or cyclohexene (3.20–3.30 vol%) as a competitor in the model gasoline led to a decline in desulfurization performance, especially when cyclohexene was added. The bimetallic Cu/Co-BTC showed a slight loss in breakthrough volume by only 5% after regenerating 7 times, displaying an excellent regeneration property.

Graphical abstract: Synthesis of bimetallic–organic framework Cu/Co-BTC and the improved performance of thiophene adsorption

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Publication details

The article was received on 30 Mar 2019, accepted on 13 May 2019 and first published on 20 May 2019


Article type: Paper
DOI: 10.1039/C9RA02372K
RSC Adv., 2019,9, 15642-15647
  • Open access: Creative Commons BY-NC license
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    Synthesis of bimetallic–organic framework Cu/Co-BTC and the improved performance of thiophene adsorption

    F. Tian, C. Qiao, R. Zheng, Q. Ru, X. Sun, Y. Zhang and C. Meng, RSC Adv., 2019, 9, 15642
    DOI: 10.1039/C9RA02372K

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