接口(物质)
电子转移
材料科学
电子
传输(计算)
化学工程
化学
物理
光化学
计算机科学
复合材料
并行计算
核物理学
工程类
毛细管数
毛细管作用
作者
Youpeng Zhao,Chenggen Li,Yonggang Zhu,Li Liu,Ting Zhu,Yuan Dong,Hansong Cheng,Ming Yang
标识
DOI:10.1016/j.apcatb.2023.122792
摘要
Developing cost-effective and efficient hydrogenation catalysts is crucial for Liquid Organic Hydrogen Carrier (LOHC) technology. ZnO-modified Ni/Al2O3 catalysts were prepared and evaluated for their catalytic hydrogenation of N-propylcarbazole (NPCZ). Among all catalysts, NiZn11Al achieved saturation hydrogenation of NPCZ within 25 min and exhibited excellent potential for industrial applications. The moderate amount of ZnO enhanced the dispersion of Ni nanoparticles, while excessive ZnO inhibited dispersion and promoted Ni-Zn alloy formation. The amount of ZnO doping determined the interaction strength and direction of electron transfer between Ni and ZnO. The formation of the Ni-ZnO interface effectively prevented agglomeration of Ni nanoparticles and improved catalytic stability for NPCZ hydrogenation. Dispersed Niδ+ boosted hydrogen activation, and the strong acid sites of the catalyst promoted the hydrogenation activity. The synergistic effect of Ni and ZnO was shown to accelerate the hydrogenation rate and lower the activation energy compared with Ru-based catalysts.
科研通智能强力驱动
Strongly Powered by AbleSci AI