In situ characterization of Cu–Co oxides for catalytic application

Z. Y. Tian; H. Vieker; P. Mountapmbeme Kouotou; A. Beyer

doi:10.1039/C4FD00192C

In situ characterization of Cu–Co oxides for catalytic application†

Z. Y. Tian,*^ab H. Vieker,^c P. Mountapmbeme Kouotou^b and A. Beyer^c

* Corresponding authors

^a Institute of Engineering Thermophysics, Chinese Academy of Sciences, 11 Beisihuanxi Road, Beijing 100190, China
E-mail: tianzhenyu@iet.cn
Fax: +86 10 8254 3184
Tel: +86 10 8254 3184

^b Department of Chemistry, Bielefeld University, Universitätsstraβe. 25, D-33615 Bielefeld, Germany

^c Department of Physics, Bielefeld University, Universitätsstraβe. 25, D-33615 Bielefeld, Germany

Abstract

In situ emission and absorption FTIR methods were employed to characterize the spatially resolved structure of binary Co–Cu oxides for low-temperature oxidation of CO and propene. Co–Cu oxide catalysts were controllably synthesized by pulsed-spray evaporation chemical vapor deposition. XRD, FTIR, XPS, UV-vis and helium ion microscopy (HIM) were employed to characterize the as-prepared thin films in terms of structure, composition, optical and thermal properties as well as morphology. In situ emission FTIR spectroscopy indicates that Co₃O₄, CuCo₂O₄ and CuO are thermally stable at 650, 655 and 450 °C, respectively. The catalytic tests with absorption FTIR display that the involvement of Co–Cu oxides can initiate CO and C₃H₆ oxidation at lower temperatures. The results indicate that in situ emission and absorption FTIR are useful techniques to explore the thermal properties and catalytic performance of functional materials, allowing many potential applications in tailoring their temporally and spatially resolved structure-property relationships.

This article is part of the themed collection: Temporally and Spatially Resolved Molecular Science

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DOI: https://doi.org/10.1039/C4FD00192C
Article type: Paper
Submitted: 04 Oct 2014
Accepted: 28 Oct 2014
First published: 26 Jan 2015

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Faraday Discuss., 2015,177, 249-262

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In situ characterization of Cu–Co oxides for catalytic application

Z. Y. Tian, H. Vieker, P. M. Kouotou and A. Beyer, Faraday Discuss., 2015, 177, 249 DOI: 10.1039/C4FD00192C

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In situ characterization of Cu–Co oxides for catalytic application†

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