Abstract: Supported copper–titanium oxide catalysts have been studied by IR spectroscopy, XRD, UV–VIS diffuse reflectance spectroscopy, ESR, TPR with hydrogen and EXAFS. Different states of Cu2+ ions have been found on the surface of TiO2. The ratio between these states depends on the copper concentration and catalyst preparation method. Chain structures are formed due to the interaction of Cu2+ ions with TiO2. Their concentration and geometry of their nearest oxygen environment are determined by the structure of anatase faces. Some of these surface-stabilized Cu2+ ions are nucleation centers of oxide clusters. A noticeable growth of bulk CuO phase is observed after the completion of the formation of chain structures and oxide clusters. A quantitative estimation of the concentration of these copper forms in the catalysts is reported. For supported copper–titanium oxide catalysts, chain forms of Cu2+ ions are shown to be the most active forms of copper in NO SCR with ammonia and methane oxidation.

Cite: Komova O.V. , Simakov A.V. , Rogov V.A. , Kochubey D.I. , Odegova G.V. , Kriventsov V.V. , Paukshtis E.A. , Ushakov V.A. , Sazonova N.N. , Nikoro T.A.
Investigation of the State of Copper in Supported Copper–Titanium Oxide Catalysts
Journal of Molecular Catalysis A: Chemical. 2000. V.161. N1-2. P.191-204. DOI: 10.1016/S1381-1169(00)00342-3 WOS Scopus РИНЦ ANCAN OpenAlex

Dates:

Submitted:	Dec 22, 1999
Accepted:	Jun 16, 2000
Published online:	Sep 7, 2000
Published print:	Nov 6, 2000

Identifiers:

Web of science:	WOS:000089923200022
Scopus:	2-s2.0-0034613884
Elibrary:	13342479
Chemical Abstracts:	2000:619661
Chemical Abstracts (print):	133:354258
OpenAlex:	W1973045886

Citing:

DB	Citing
Web of science	79
Scopus	81
Elibrary	83
OpenAlex	78

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