Volatile organic compounds abatement over copper-based catalysts: Effect of support
Volatile organic compounds abatement over copper-based catalysts: Effect of support
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DOI：
10.1016/j.ica.2016.07.059
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发表时间：
2017-01-30
影响因子：
2.8
通讯作者：
Figueiredo, J. L.
中科院分区：
文献类型：
--
作者：
Konsolakis, M.;Carabineiro, S. A. C.;Figueiredo, J. L.
探讨了铜基催化剂的载体对常见挥发性有机化合物乙酸乙酯（EtOAc）氧化的影响。以CeO2、Gd2O3、La2O3和Sm2O3四种稀土氧化物（REO）为载体制备Cu/REO催化剂。对样品进行了-196℃下N-2吸附（测定表面积）、扫描电镜、x射线衍射、x射线光电子能谱和温度程序还原等表征，以深入了解结构、结构和氧化还原性质对催化效率的影响。在EtOAc转化方面，Cu/CeO2 > Cu/Gd2O3 > Cu/Sm2O3 > Cu/La2O3，这与Cu/REO样品的还原性和氧可用性密切相关。在温度低至275℃的Cu/CeO2催化剂上实现了EtOAc的完全转化，这是最有效的催化剂。(C) 2016 Elsevier B.V.版权所有
The effect of the support was explored for Cu-based catalysts on the oxidation of ethyl acetate (EtOAc), a common volatile organic compound. In particular, four Rare Earth Oxide(s) (REO), namely CeO2, Gd2O3, La2O3 and Sm2O3, were used as supports to obtain the Cu/REO catalysts. The samples were characterized by N-2 adsorption at -196 degrees C (to determine the surface area), scanning electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy and temperature programmed reduction to gain insight into the impact of textural, structural and redox properties on the catalytic efficiency. The following sequence, in terms of EtOAc conversion, was revealed: Cu/CeO2 > Cu/Gd2O3 > Cu/Sm2O3 > Cu/La2O3, which is closely related to the redox properties of the Cu/REO samples, in terms of reducibility and labile oxygen availability. Complete EtOAc conversion was achieved at temperatures as low as 275 degrees C over Cu/CeO2, which was the most efficient catalyst. (C) 2016 Elsevier B.V. All rights reserved.