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首页> 外文期刊>Applied Surface Science >Template-assisted hydrothermally obtained titania-ceria composites and their application as catalysts in ethyl acetate oxidation and methanol decomposition with a potential for sustainable environment protection
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Template-assisted hydrothermally obtained titania-ceria composites and their application as catalysts in ethyl acetate oxidation and methanol decomposition with a potential for sustainable environment protection

机译：模板辅助水热法制得的二氧化钛-二氧化铈复合材料及其在乙酸乙酯氧化和甲醇分解中的催化剂应用，具有可持续的环境保护潜力

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摘要

High surface area mesoporous ceria-titania binary materials with high Lewis acidity and improved reduction properties were synthesized using template assisted hydrothermal technique. The obtained materials were characterized by low temperature nitrogen physisorption, XRD, SEM, TEM, Raman, UV vis, XPS, FTIR, FTIR of adsorbed pyridine and thermo-programmed reduction with hydrogen. Their catalytic activity was tested in total oxidation of ethyl acetate and methanol decomposition to CO and hydrogen with a potential application in VOCs elimination and alternative fuels, respectively. The structural changes in the binary materials, which could be tuned by the variation in the Ce/Ti ratio and the temperature of hydrothermal treatment, provoked significant changes in their textural, surface and redox properties, which is in close relation to the catalytic activity and selectivity in various catalytic processes. The intimate contact between the individual oxides results in the formation of different catalytic active sites and their role in the studied catalytic reactions was discussed in details. (C) 2016 Elsevier B.V. All rights reserved.
机译：利用模板辅助水热技术合成了高路易斯酸度和高还原性能的高比表面积介孔二氧化铈-二氧化钛二元材料。所获得的材料通过低温氮物理吸附，XRD，SEM，TEM，拉曼，UV vis，XPS，FTIR，吸附吡啶的FTIR以及氢的热程序还原进行表征。在将乙酸乙酯和甲醇分解为一氧化碳和氢气的过程中，测试了它们的催化活性，并将其分别应用于消除VOC和替代燃料中。二元材料的结构变化可通过Ce / Ti比值的变化和水热处理的温度来调节，从而引起其结构，表面和氧化还原性能的显着变化，这与催化活性和在各种催化过程中的选择性。各个氧化物之间的紧密接触导致形成不同的催化活性位点，并详细讨论了它们在所研究的催化反应中的作用。 （C）2016 Elsevier B.V.保留所有权利。

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