Junjie Li, Yu Wang, Nan Zhang, Jing Ai, Haoshang Wang, Zhizheng Sheng, Zhou Jian, Chuang Liu, Chuanming Wang, Zhao Shengli, Tiezhu Zhang, Fanshun Lin, Zhendong Wang, Yongfeng Hu, Weimin Yang
Abstract The spatial arrangement between metal and acid sites critically influences the hydroisomerization efficiency of metal/zeolite catalysts in n ‐alkane conversion. Nevertheless, achieving precise control on metal‐acid intimacy remains a significant challenge at the nanoscale. Herein, Pt nanoparticles are strategically tailored on TiO 2 ‐modified ZSM‐5 carriers via atomic layer deposition, leveraging the TiO 2 spacer thickness as a tunable parameter to modulate interfacial distances. In the hydroisomerization of n ‐hexane, the catalytic performance of the Pt‐Ti/ZSM‐5 with different TiO 2 thickness displayed a volcano‐shaped trend with respect to the metal‐acid distances, peaking at 67.5% iso ‐C6 yield under optimized proximity. This enhanced performance arose from the metal‐acid distance‐mediated diffusion confinement, resulting in the kinetically favorable reaction pathways. The established structure‐property relationship provides a blueprint for rationally designing spatially optimized metal/zeolite catalysts, while advancing the fundamental understanding of bifunctional catalysis.