Hydrogenation and dehydrogenation reactions catalyzed by CNTs supported palladium catalysts

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• 作者：Xiao-Feng Guo ; Da-Young Jang ; Hyung-Gyu Jang ; Geon-Joong Kim ; ^{kimgj@inha.ac.kr}
• 关键词：Carbon nanotubes ; Pd catalyst ; Hydrogenation ; Dehydrogenaton
• 刊名：Catalysis Today
• 出版年：2012
• 期刊代码：13_09205861
• 类别：ce
• 出版时间：1 June, 2012
• 卷：186
• 期：1
• 页码：109-114
• 文件大小：774 K

摘要

Pd supported on carbon nanotubes (CNTs), Al₂O₃ and SiO₂ were prepared by wet-impregnation method. The synthesized catalysts were characterized by BET, XPS, SEM and TEM. Hydrogenation of benzaldehyde and dehydrogenation of ethylbenzene over Pd/CNTs, Pd/r-Al₂O₃ and Pd/SiO₂ were carried out in fixed bed phase reaction under an atmosphere pressure to test the activity and selectivity of the catalysts. Influence of temperature on activity and selectivity was investigated in both hydrogenation of benzaldehyde and dehydrogenation of ethylbenzene. The selectivity and conversion of obtained products were dependent on the nature of the support and reaction temperature. The Pd/CNTs showed a higher activity (100%) and selectivity to toluene (94.4%) in the hydrogenation. High selectivity (100%) towards the desired the product of styrene was achieved with conversion of ethylbenzene over 45.7%in the dehydrogenation.