Journal
KOREAN JOURNAL OF CHEMICAL ENGINEERING
Volume 34, Issue 7, Pages 1944-1951Publisher
KOREAN INSTITUTE CHEMICAL ENGINEERS
DOI: 10.1007/s11814-017-0111-4
Keywords
Ce1-xCuxO2 Oxide Solid Solution; Catalyst; Phenyl VOCs; Catalytic Combustion; Reactive Oxygen Species
Funding
- Open Research Fund of Chongqing Key Laboratory of catalysis and functional organic molecules [CQCM-2015-06]
- Chongqing Research Program of Basic Research and Frontier Technology [cstc2015jcyjA20015]
- Science and Technology of Chongqing Municipal Education Commission [KJ1400610]
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Ce1-x Cu (x) O-2 oxide solid solution catalysts with different Ce/Cu mole ratios were synthesized by the one-pot complex method. The prepared Ce1-x Cu (x) O-2 catalysts were characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and H-2 temperature-programmed reduction (H-2-TPR). Their catalytic properties were also investigated by catalytic combustion of phenyl volatile organic compounds (PVOCs: benzene, toluene, xylene, and ethylbenzene) in air. XRD analysis confirmed that the CuO species can fully dissolve into the CeO2 lattice to form CeCu oxide solid solutions. XPS and H-2-TPR results indicated that the prepared Ce1-x Cu (x) O-2 catalysts contain abundant reactive oxygen species and superior reducibility. Furthermore, the physicochemical properties of the prepared Ce1-x Cu (x) O-2 catalysts are affected by the Ce/Cu mole ratio. The CeCu3 catalyst with Ce/Cu mole ratio of 3.0 contains abundant reactive oxygen species and exhibits superior catalytic combustion activity of PVOCs. Moreover, the ignitability of PVOCs is also affected by the respective physicochemical properties. The catalytic combustion conversions of ethylbenzene, xylene, toluene, and benzene are 99%, 98.9%, 94.3%, and 62.8% at 205, 220, 225, and 225 A degrees C, respectively.
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