首页|Nb-modified CoOx as efficient catalysts for toluene oxidation
Nb-modified CoOx as efficient catalysts for toluene oxidation
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A series of NbCoOx catalysts with different Nb/Co molar ratios were synthesized via a slurry method to investigate the catalytic activity of oxidizing toluene.Among them,Nb_(0.67)Co_(0.33)Ox exhibited the highest toluene combustion efficiency.It was found that the incorporation of amorphous niobium provided the surface acid sites and abundant oxygen vacancies for the adsorption and activation of the reactants which was demonstrated by NH3-TPD,XRD,UV-vis DRS,XPS and Toluene-TPD.Furthermore,the strong interaction between niobium and cobalt can also affect its physical and chemical properties related to SEM,H2-TPR and XPS.Multiply TP-experiments were conducted to investigate the migration and transformation of oxygen species and find out that the reaction followed the MVK mechanism.
NbCoCvTolueneCatalytic oxidationOxygen species
Shuangju Li、Qingyang Li、Chuanhui Zhang
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University of Chinese Academy of Sciences,Beijing 100049,China
Institute of Materials for Energy and Environment,College of Materials Science and Engineering,Qingdao University,Qingdao 266071,China
NSTL
