Strategies of alloying effect for regulating Pt-based H2-SCR catalytic activity

Alloying Pt with 3d transition metals results in the d-band center moving away from the Fermi level, creating compressive strain. The adsorption strength of the reactants should not be too strong or too weak. The presence of compressive strain, which can increase the orbital overlap between *H and *...

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Published inChemical communications (Cambridge, England) Vol. 54; no. 68; pp. 9502 - 9505
Main Authors Sun, Wei, Wang, Zhiqiang, Wang, Qian, Waqas Qamar Zaman, Cao, Limei, Xue-Qing Gong, Yang, Ji
Format Journal Article
LanguageEnglish
Published Cambridge Royal Society of Chemistry 21.08.2018
Subjects
adsorption
Alloy development
Alloying effects
Catalysis
catalysts
Catalytic activity
chemical bonding
chemical reactions
compression strength
Compressive properties
Compressive strength
energy
guidelines
transition elements
Transition metals
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Summary:Alloying Pt with 3d transition metals results in the d-band center moving away from the Fermi level, creating compressive strain. The adsorption strength of the reactants should not be too strong or too weak. The presence of compressive strain, which can increase the orbital overlap between *H and *O, results in the reduction of energy barriers of H-assisted N–O bond activation in terms of the Langmuir–Hinshelwood (L–H) reaction route. Our findings provide guidelines to design more efficient H2-SCR catalysts.
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ISSN:1359-7345
1364-548X
1364-548X
DOI:10.1039/c8cc05279d