Promoting effects of Ce and Pt addition on the destructive performances of V2O5/γ-Al2O3 for catalytic combustion of benzene

Abstract In the present work, a commercial mesoporous γ-Al 2 O 3 with large specific surface area, high mechanical strength and good thermal stability was employed as the support for preparing a series of V 2 O 5 /γ-Al 2 O 3 materials with different loading amounts of V 2 O 5 . Ce and Pt were introduced in order to further promote the oxidative performances for catalytic combustion of benzene, a typical pollutant of various volatile organic compounds (VOCs) in industrial waste gases. To investigate the structure − catalytic property relationship, these catalytic materials were systematically characterized by the XRD, N 2 adsorption/desorption, HRTEM, EDX, H 2 -TPR and in-situ TPSR techniques. The results showed that the introduction of 10%wt Ce and 0.3%wt Pt significantly improved the catalytic oxidative activity and CO 2 selectivity of the V 2 O 5 /γ-Al 2 O 3 catalysts for benzene combustion, due to the obvious enhanced redox property resulted from the metal–metal and metal-support interaction as well as the high dispersion of the active components on γ-Al 2 O 3 . Furthermore, the 0.3%Pt/10%Ce-10%V/γ-Al 2 O 3 catalyst also represented good durability and resistance to water and Cl-poisoning during the long-time continuous reaction, implying that it deserved more attention and had good potential for industrial application.