Effect of the support calcination temperature on selective hydrodesulfurization of TiO2 nanotubes supported CoMo catalysts

能源化学(英文) ›› 2013, Vol. 22 ›› Issue (3): 517-523.

Effect of the support calcination temperature on selective hydrodesulfurization of TiO₂ nanotubes supported CoMo catalysts

Cuili Guo, Yuanyuan Wu, Xin Wang, Bo Yang

School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China

收稿日期:2012-11-27 修回日期:2013-01-29 出版日期:2013-05-20 发布日期:2013-05-31
通讯作者: Cuili Guo

Effect of the support calcination temperature on selective hydrodesulfurization of TiO₂ nanotubes supported CoMo catalysts

Cuili Guo, Yuanyuan Wu, Xin Wang, Bo Yang

School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China

Received:2012-11-27 Revised:2013-01-29 Online:2013-05-20 Published:2013-05-31

摘要/Abstract

摘要： TiO₂ nanotubes (TiO₂-NTs) were synthesized by the hydrothermal method. Co and Mo active components were supported on a series of the as-prepared TiO₂-NTs samples which were calcined at different temperatures. The effects of support calcination temperature of CoMo/TiO₂-NTs catalysts on their catalytic performance were investigated for selective hydrodesulfurization (HDS). The samples were characterized by means of the scanning electron microscopy (SEM), the transmission electron microscopy (TEM), N₂ adsorption-desorption, X-ray diffraction (XRD), Raman spectroscopy and H₂ temperature-programmed reduction (H₂-TPR). The experimental results revealed that TiO₂-NTs support calcined under 500 ℃ can maintain the nanotubular structure with higher surface area and pore volume. Meanwhile, the obtained supported CoMo/TiO₂-NTs catalysts exhibited weak metal-support interaction, more octahedral Mo⁶⁺ species and high catalytic performance in selective HDS.

关键词: TiO₂ nanotubes (TiO₂-NTs), selective HDS, CoMo catalyst, calcination temperature

Abstract: TiO₂ nanotubes (TiO₂-NTs) were synthesized by the hydrothermal method. Co and Mo active components were supported on a series of the as-prepared TiO₂-NTs samples which were calcined at different temperatures. The effects of support calcination temperature of CoMo/TiO₂-NTs catalysts on their catalytic performance were investigated for selective hydrodesulfurization (HDS). The samples were characterized by means of the scanning electron microscopy (SEM), the transmission electron microscopy (TEM), N₂ adsorption-desorption, X-ray diffraction (XRD), Raman spectroscopy and H₂ temperature-programmed reduction (H₂-TPR). The experimental results revealed that TiO₂-NTs support calcined under 500 ℃ can maintain the nanotubular structure with higher surface area and pore volume. Meanwhile, the obtained supported CoMo/TiO₂-NTs catalysts exhibited weak metal-support interaction, more octahedral Mo⁶⁺ species and high catalytic performance in selective HDS.

Key words: TiO₂ nanotubes (TiO₂-NTs), selective HDS, CoMo catalyst, calcination temperature

Cuili Guo, Yuanyuan Wu, Xin Wang, Bo Yang. Effect of the support calcination temperature on selective hydrodesulfurization of TiO₂ nanotubes supported CoMo catalysts[J]. 能源化学(英文), 2013, 22(3): 517-523.

Cuili Guo, Yuanyuan Wu, Xin Wang, Bo Yang. Effect of the support calcination temperature on selective hydrodesulfurization of TiO₂ nanotubes supported CoMo catalysts[J]. Journal of Energy Chemistry, 2013, 22(3): 517-523.

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Effect of the support calcination temperature on selective hydrodesulfurization of TiO₂ nanotubes supported CoMo catalysts

Effect of the support calcination temperature on selective hydrodesulfurization of TiO₂ nanotubes supported CoMo catalysts

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