Preparation of Vermiculite‐based Molecular Sieve‐Supported Ni‐Co Alloy Catalyst Assisted by Oleic Acid and Application in Dry Reforming of Methane

Abstract In this work, microporous vermiculite‐based molecular sieves were etched into mesoporous vermiculite‐based molecular sieves by alkaline solution, and the mesoporous vermiculite‐based molecular sieves were supported by Ni or Ni‐Co alloy active components by oleic acid‐assisted method and impregnation method, respectively. And prepared catalysts were applied to the dry reforming of methane (DRM) reaction. Under the reaction conditions of T=750 °C and GHSV=30000 mL/(h g cat ), the conversion rate of CO 2 and CH 4 of the Ni‐Co‐oa/VSiO 2 bimetallic catalyst reached 84.7 % and 71.9 %, respectively. According to the analysis of the relevant characterization results, the Ni‐Co‐oa/VSiO 2 catalyst has more nickel active sites and stronger interaction between metal and support due to the addition of oleic acid. Therefore, Ni‐Co‐oa/VSiO 2 has better catalytic reactivity and stability.