Hollow carbon sphere encapsulated nickel nanoreactor for aqueous-phase hydrogenation-rearrangement tandem reaction with enhanced catalytic performance

作者：Zhi Hu, Miaomiao Han, Chun Chen, Zidan Zou, Yue Shen, Zhen Fu, Xiaoguang Zhu, Yunxia Zhang, Haimin Zhang, Huijun Zhao, Guozhong Wang · 发表于：Applied Catalysis B: Environmental · 年份：2022 · DOI：10.1016/j.apcatb.2022.121140 · 被引用次数：73 · 研究领域：Catalysis for Biomass Conversion、Nanomaterials for catalytic reactions、Catalysis and Hydrodesulfurization Studies

As green chemistry, aqueous-phase reactions play a vital role in modern fine chemical synthesis. Herein, an encapsulated nickel in a hollow carbon sphere ([email protected]) catalyst was constructed to effectively catalyze an aqueous-phase hydrogenation-rearrangement tandem (AP-HRT) reaction, in which water was employed as the solvent and reactant simultaneously. The activity is relevant to the HCS and Ni loading. The optimal [email protected] catalyst can release 100% furfural conversion and 99.1% cyclopentanone selectivity at 150 °C and can maintain its activity after 10 cycles of experiments. The superior catalytic performance comes from the fact that each independent [email protected] can be treated as an individual nanoreactor with a void-confinement effect, which not only reduces the side reactions due to the size-selective effect but also prevents active metal from leaching under harsh conditions. The reaction mechanism of FAL AP-HRT was further investigated via kinetic experiments combined with DFT calculations.