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Noble‐Metal‐Free Single‐Atom Catalysts CuAl 4 O 7–9 − for CO Oxidation by O 2
Author(s) -
Zou XiuPing,
Wang LiNa,
Li XiaoNa,
Liu QingYu,
Zhao YanXia,
Ma TongMei,
He ShengGui
Publication year - 2018
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201807056
Subject(s) - catalysis , atom (system on chip) , noble metal , metal , materials science , chemistry , crystallography , computer science , metallurgy , operating system , biochemistry
The single copper atom doped clusters CuAl 4 O 7–9 − can catalyze CO oxidation by O 2 . The CuAl 4 O 7–9 − clusters are the first group of experimentally identified noble‐metal free single atom catalysts for such a prototypical reaction. The reactions were characterized by mass spectrometry and density functional theory calculations. The CuAl 4 O 9 CO − is much more reactive than CuAl 4 O 9 − in the reaction with CO to generate CO 2 . One adsorbed CO is crucial to stabilize Cu of CuAl 4 O 9 − around +I oxidation state and promote the oxidation of another CO. The widely emphasized correlation between the catalytic reactivity of CO oxidation and Cu oxidation state can be understood at the strictly molecular level. The remarkable difference between Cu catalysis and noble‐metal catalysis was discussed.