PtM/Ba/Al 2 O 3 Ce 0.6 Zr 0.4 O 2 : Influence of Synergetic Interactions between Transition Metal and Platinum on NO  x   Storage and Reduction | Zendy

Chen Zhilin | Zendy; Wang Xiuyun | Zendy; Wang Ruihu | Zendy

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PtM/Ba/Al 2 O 3 Ce 0.6 Zr 0.4 O 2 : Influence of Synergetic Interactions between Transition Metal and Platinum on NO x Storage and Reduction

Author(s) -

Chen Zhilin,

Wang Xiuyun,

Wang Ruihu

Publication year - 2014

Publication title -

chempluschem

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.801

H-Index - 61

ISSN - 2192-6506

DOI - 10.1002/cplu.201402066

Subject(s) - transition metal , platinum , chemistry , sulfur , desorption , inorganic chemistry , metal , analytical chemistry (journal) , catalysis , adsorption , organic chemistry

PtM/Ba/ACZ (M=Mn, Fe, and Co) and Pt/Ba/ACZ were prepared using Al 2 O 3 Ce 0.6 Zr 0.4 O 2 (ACZ) as a support. XRD analysis shows Ce 0.6 Zr 0.4 O 2 solid solution was formed in the ACZ support, and M addition results in a slight shift of the characteristic peaks of Ce 0.6 Zr 0.4 O 2 to higher 2 θ value. A strong interaction between Pt and the transition metals was confirmed by X‐ray absorption fine structure experiments. The effects of transition‐metal addition on NO x storage and reduction, sulfur resistance, and regeneration of PtM/Ba/ACZ were explored. In general, the addition of Co is favorable for NO x storage and reduction, and the addition of Co and Fe facilitates sulfur desorption and regeneration of sulfated samples. Interestingly, if the Pt content is lowered from 1.0 wt % in Pt/Ba/ACZ to 0.5 wt % in PtCo/Ba/ACZ, higher NO x storage capacity and comparable reduction properties are demonstrated.

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