Enhanced stability of highly-dispersed copper catalyst supported by hierarchically porous carbon for long term selective hydrogenation

Nian Hu, Xiao Yun Li, Si Ming Liu, Zhao Wang, Xiao Ke He, Yue Xin Hou, Yu Xiang Wang, Zhao Deng, Li Hua Chen, Bao Lian Su

Résultats de recherche: Contribution à un journal/une revueArticle

Résumé

Copper based catalysts have high potential for the substituent of noble-metal based catalysts as their high selectivity and moderate activity for selective hydrogenation reaction; however, achieving further high catalytic stability is very difficult. In this work, the carbonization process of Cu-based organic frameworks was explored for the synthesis of highly-dispersed Cu supported by hierarchically porous carbon with high catalytic performance for selective hydrogenation of 1,3-butadiene. The porous hierarchy of carbon support and the dispersion of copper nanoparticles can be precisely tuned by controlling the carbonization process. The resultant catalyst carbonized at 600 °C exhibits a rather low reaction temperature at 75 °C for 100% butadiene conversion with 100% selectivity to butenes, due to its reasonable porous hierarchy and highly-dispersed copper sites. More importantly, unprecedentedly stability of the corresponding Cu catalyst was firstly observed for selective 1,3-butadiene hydrogenation, with both 100% butadiene conversion and 100% butenes selectivity over 120 h of reaction at 75 °C. This study verifies that a simply control the carbonization process of metal organic frameworks can be an effective way to obtain Cu-based catalysts with superior catalytic performance for selective hydrogenation reaction.

langue originaleAnglais
Pages (de - à)1081-1090
Nombre de pages10
journalChinese Journal of Catalysis
Volume41
Numéro de publication7
Les DOIs
Etat de la publicationPublié - juil. 2020

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