Boosting the selective hydrogenation of biphenyl to cyclohexylbenzene over bimetallic Ni-Ru/SiO2 catalyst via enhancing strong metal-support interaction

• Published in: Applied surface science 2024-07, Vol.660, p.160012, Article 160012
• Main Authors: Yang, Jingyi, Gao, Yongzhen, Fan, Jie, Wang, Jieqiong, Yang, Tao, Bing, Zezheng, Zhang, Meng, Liu, Zhongyi
• Format: Article
• Language: English
• Subjects: Biphenyl; Electron-deficient species; Metal-support interaction; Selective hydrogenation; Supported Ni-Ru catalyst
• ISSN: 0169-4332
• DOI: 10.1016/j.apsusc.2024.160012

[Display omitted] •Strong Electrostatic Adsorption (SEA) strategy produces finely dispersed Ni-Ru catalyst.•Enhancing metal-support interaction forms Niδ+ sites, enabling electron-rich aromatics adsorption.•Ru addition enhances hydrogen spillover and Ni dispersion.•SEA catalyst shows increased cyclohexylbenzene conversion and turnover frequencies. Tuning the metal-support interaction (MSI) between highly dispersed nanosized metal particles and the support plays a pivotal role in the activity and selectivity of polyaromatics selective hydrogenation. In this work, the supported bimetallic Ni-Ru/SiO2-SEA catalyst was prepared by a strong electrostatic adsorption (SEA) strategy, and applied for the selective hydrogenation of biphenyl (BP) to cyclohexylbenzene (CHB). Compared to the catalysts prepared by the conventional incipient wetness impregnation method and Ni/SiO2-SEA, the significant effects of MSI and hydrogen spillover on Ni-Ru/SiO2-SEA facilitated the highly exposed and uniformly dispersed electron-deficient Niδ+ (0