MgFe 2 O 4 with inverse spinel structure is demonstrated to be an efficient support for constructing practical potential Pt catalyst (Pt/MgFe 2 O 4 ). The resultant Pt/MgFe 2 O 4 exhibits excellent catalytic behavior in CO oxidation under normal temperature and humidity. TOF calculated based on the content of Pt is 0.131 s –1 . The excellent performance of Pt/MgFe 2 O 4 attributes to the presence of surface undercoordinated lattice oxygens on MgFe 2 O 4 support. These oxygens could participate in the initial CO oxidation and then be recovered under O 2 conditions. Over this Pt/MgFe 2 O 4 catalyst, CO catalytic oxidation should mainly follow a redox mechanism.
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Zheng et al. (2016) studied this question.
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