Effective elemental mercury (Hg0) removal from syngas is essential for industrial mercury control. This study synthesized LaMeOx/ZSM-5 (Me = Zn, Cu, and Fe) sorbents via the sol–gel method and evaluated their Hg⁰ removal performance for simulated syngas at 50–250 °C. The physico-chemical properties of samples were characterized by Brunauer-Emmett-Teller (BET), Scanning Electron Microscopy (SEM), X-ray diffraction (XRD), H2 temperature-programmed reduction (H2-TPR) and X-ray photoelectron spectroscopy (XPS). La2CuO4/ZSM-5 demonstrated superior efficiency (≥95 %) at 50–200 °C under simulated syngas, attributed to its porous structure and abundant surface-active oxygen. H2S significantly enhanced Hg0 removal by forming active sulfur species, while H2, CO, and H2O inhibited performance due to competition for active sites. The inhibitory effects were mitigated by adding 500 ppm H2S. XPS and TPD analyses revealed HgS (cinnabar) as the dominant mercury species, with Cu2+ ions and active oxygen critical for Hg0 capture. Stability tests confirmed excellent reusability, with over 88 % efficiency maintained after 10 adsorption-regeneration cycles. La2CuO4/ZSM-5 emerges as a promising sorbent for Hg0 removal, offering high efficiency, stability, and resistance to syngas components, making it suitable for industrial applications.