Chem. Sci., 2025, Accepted Manuscript DOI: 10.1039/D5SC05078B, Edge Article Landong Li, Yuchao Chai, Li Wang, Yuwen Ni, Jingyao Yang, Guangjun Wu Ethylene dimerization is a critical industrial process traditionally catalyzed by homogeneous systems employing cocatalysts or solvents. Although heterogeneous catalysts show potential to circumvent these limitations, they often exhibit low activity...