首页|Ytterbium modified birnessite MnO2 for improving deep oxidation of toluene
Ytterbium modified birnessite MnO2 for improving deep oxidation of toluene
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A series of rare earth metals modified birnessite manganese dioxides(RE-Mn)was synthesized by hy-drothermal method and their catalytic degradation of toluene was investigated.Yb-Mn shows the best toluene oxidation activity with the conversion of T50％and T99％at 196 and 226 ℃,respectively.The physiochemical characterizations identified that the high catalytic performance and excellent stability of Yb-Mn are mainly associated with its higher molar ratios of Mn4+/Mn3+,more lattice oxygen(Olatt),and better mobility of surface adsorbed oxygen(Oads).Moreover,it is confirmed that introduction of Yb into birnessite MnO2 facilitates the production of acetic acid at lower temperature.These results can aid the design of high-efficiency manganese oxide catalysts for the catalytic combustion of VOCs.
Manganese oxideRare earth metal dopingTolueneCatalytic combustion
Linjiang Sun、Yan Cheng、Yujie Liu、Can Yi
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Faculty of Geosciences and Environmental Engineering,Southwest Jiao tong University,Chengdu,611756,China
Sichuan Provincial Science and Technology Agency Support Projects
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