噻吩在Ni/Al_2O_3催化剂上的原位吸附红外光谱研究
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摘要
将NiO/γ-Al_2O_3催化剂制成自支撑的薄片,采用原位红外光谱方法探究了噻吩分子在Ni上的吸附模式。将稀土Ce引入,对NiO/γ-Al_2O_3催化剂改性,发现Ce可以改善NiO的还原性能,并增强噻吩吸附时的S-金属直接作用,改善了噻吩脱硫的选择性。
NiO/γ-Al_2O_3 catalyst was prepared into self-supporting wafers,and the adsorption patterns of thiophene molecules on Ni were investigated by in-situ FT-IR spectroscopy.Rare earth Ce was introduced to modify NiO/γ-Al_2O_3 catalyst.It was found that Ce improves the reduction performance of NiO,and enhances the direct interaction of sulfur-metal on thiophene adsorption,thus improves the selectivity of thiophene desulfurization.
NiO/γ-Al_2O_3 catalyst was prepared into self-supporting wafers,and the adsorption patterns of thiophene molecules on Ni were investigated by in-situ FT-IR spectroscopy.Rare earth Ce was introduced to modify NiO/γ-Al_2O_3 catalyst.It was found that Ce improves the reduction performance of NiO,and enhances the direct interaction of sulfur-metal on thiophene adsorption,thus improves the selectivity of thiophene desulfurization.
引文
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