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N_2O decomposition over Co/Hβ catalysts doped with rare-earth metals

Fuchen Ding

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Abstract

CoM/Hβ(M=La,Ce,Pr,Nd)catalysts were prepared by impregnation method.The catalytic performance of CoM/Hβ for N2O decomposition was investigated in the presence of oxygen.The catalysts were characterized by XRD,TG-DSC-MS,H2-TPR and NH3-TPD.XRD result showed that Co species mainly existed as Co3O4.NH3-TPD result showed that the catalytic activity was related to the acidity of the catalyst.The activity evaluation results indicated that the catalytic performance of CoM/Hβ was affected by the type of rare earth metals;CoPr/Hβ catalyst exhibited the highest catalytic activity.When reaction temperature was 398 ℃,the conversion of N2O reached 95%.

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What this paper is about

CoM/Hβ(M=La,Ce,Pr,Nd)catalysts were prepared by impregnation method.The catalytic performance of CoM/Hβ for N2O decomposition was investigated in the presence of oxygen.The catalysts were characterized by XRD,TG-DSC-MS,H2-TPR and NH3-TPD.XRD result showed that Co species mainly existed as Co3O4.NH3-TPD result showed that the catalytic activity was related to the acidity of the catalyst.The activity evaluation results indicated that the catalytic performance of CoM/Hβ was affected by the type of rare earth metals;CoPr/Hβ catalyst exhibited the highest catalytic activity.When reaction temperature was 398 ℃,the conversion of N2O reached 95%.

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Available abstract

CoM/Hβ(M=La,Ce,Pr,Nd)catalysts were prepared by impregnation method.The catalytic performance of CoM/Hβ for N2O decomposition was investigated in the presence of oxygen.The catalysts were characterized by XRD,TG-DSC-MS,H2-TPR and NH3-TPD.XRD result showed that Co species mainly existed as Co3O4.NH3-TPD result showed that the catalytic activity was related to the acidity of the catalyst.The activity evaluation results indicated that the catalytic performance of CoM/Hβ was affected by the type of rare earth metals;CoPr/Hβ catalyst exhibited the highest catalytic activity.When reaction temperature was 398 ℃,the conversion of N2O reached 95%.

Key concepts: Catalysis, Decomposition, Rare earth, Chemistry, Inorganic chemistry, Nuclear chemistry, Transition metal, Oxygen

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