Electron donation promotes the dual activation of lattice oxygen and molecular oxygen: The Pt-Pd/CeO2 catalyst efficiently catalyzes toluene
Electron donation promotes the dual activation of lattice oxygen and molecular oxygen: The Pt-Pd/CeO2 catalyst efficiently catalyzes toluene
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DOI：
10.1016/j.jcat.2023.115133
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发表时间：
2023-12
影响因子：
7.3
通讯作者：
Lei Wang;Yong-gang Sun;Yulong Ma;Minhui Xu;Juan Zhang;Yingbo Zhu;Jie Ding;Li Zhu;Jing Ma
中科院分区：
文献类型：
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作者：
Lei Wang;Yong-gang Sun;Yulong Ma;Minhui Xu;Juan Zhang;Yingbo Zhu;Jie Ding;Li Zhu;Jing Ma
Dual activation of molecular and lattice oxygen is an important step in the catalytic oxidation of volatile organic compounds. Herein, CeO2was derived from MOF as an electron donor support to develop a co-catalyst with Pt-Pd alloy nanoparticles (Pt-Pd/CeO2). The Prepared Pt-Pd/CeO2exhibits excellent catalytic activity towards toluene oxidation, showing a turnover frequency (TOF 0.26 s−1) higher than those of Pt/CeO2(0.05 s−1) and Pd/CeO2(0.02 s−1). Severalin situexperimental techniques and density functional theory calculations have revealed that the introduction of Pd valence electrons can intensify the electronic metal-support interactions (EMSIs) effects of Pt-Pd/CeO2catalysts, which can weaken the Ce-O bond, thereby promoting the production and circulation of lattice oxygen and oxygen vacancies, and modulating thed-band centre to enhance the adsorption and activation of reactants. This study presents a comprehensive investigation of toluene oxidation on alloy-supported catalysts, providing practical guidance for designing reliable catalysts suitable for industrial applications.
