【摘 要】
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HNO3-pretreated CNTs were employed as supports,and a special ultrasound-assisted impregnation method was designed to prepare supported Cu-Co catalysts for highe
【机 构】
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School of Materials and Chemical Engineering,School of Chemical Engineering
论文部分内容阅读
HNO3-pretreated CNTs were employed as supports,and a special ultrasound-assisted impregnation method was designed to prepare supported Cu-Co catalysts for higher-alcohol synthesis from syngas.The catalysts used in this work were characterized by N2 adsorption-desorption,TEM,XRD,H2-TPR,CO-TPD techniques.It was found that the pre-treatment procedure of CNTs remarkably promoted the catalytic properties of the Cu-Co/CNTs catalysts.For the Cu-Co catalyst supported on CNTs pre-treated by 68 wt%HNO3,some active components were introduced into the CNTs channels,their dispersions and the amount of strongly adsorbed CO-species were improved.The CO conversion and alcohol yield on the HNO3-pretreated Cu-Co/CNTs catalyst were increased by～21%and～69%,respectively,compared with those on the normal Cu-Co/CNTs catalyst.
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