Rational Design of Bimetal Mn-Ce Nanosheets Anchored on Porous Nano-sized ZSM-5 Zeolite for Adsorption-Enhanced Catalytic Oxidation of Toluene
Jun Xiao, Mengmeng Wang, Yaru Wang, Xunxun Li, Jiaqin He, Yunchong Liu, Qingfeng Xu, Hua Li, Najun Li, Dongyun Chen, Jianmei Lu
Abstract
Catalytic oxidation is one of the most promising methods to remove toluene; manganese-cerium catalysts have high activity in the catalytic oxidation of toluene. Herein, nano-sized ZSM-5 was synthesized using a simple hydrothermal method, and catalysts with different Mn and Ce contents were prepared via alcohol-induced redox precipitation at room temperature. In addition, zeolite provides sufficient surface area for the dispersion of manganese cerium catalysts and plays a role in concentration and enrichment in the catalytic conversion of toluene. Based on the experimental characterization results, the 20Ce/M1Z1 catalyst exhibited the best catalytic activity, achieving 90% toluene conversion at 215 °C. Moreover, the catalyst still has excellent catalytic activity in humid environments. This work provides a new strategy to expose more active sites and enhance toluene adsorption, which provides a reference for the development of more efficient catalysts in the future.