In situ characterization of Cu-Co oxides for catalytic application

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, XP...

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Bibliographic Details
Published in:Faraday discussions 2015-01, Vol.177, p.249-262
Main Authors: Tian, Z Y, Vieker, H, Kouotou, P Mountapmbeme, Beyer, A
Format: Article
Language:English
Subjects:
Alkenes - chemistry
Carbon monoxide
Carbon Monoxide - chemistry
Catalysis
CATALYSTS
CHEMICAL VAPOR DEPOSITION
Cobalt - chemistry
Copper - chemistry
DEPOSITION
Morphology
Oxidation
Oxidation-Reduction
OXIDES
Oxides - chemistry
PROPERTIES
Spectroscopy, Fourier Transform Infrared
Structure-Activity Relationship
Temperature
Thermal properties
VAPOR DEPOSITION
Volatilization
X RAY SPECTROSCOPY
X-ray photoelectron spectroscopy
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Summary: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.
ISSN:1359-6640
1364-5498
DOI:10.1039/c4fd00192c