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Structure and catalytic activity of hydrothermally obtained titanium-tin binary oxides for sustainable environment: Evaluation and control
Microporous and Mesoporous Materials ( IF 4.8 ) Pub Date : 2018-10-11 , DOI: 10.1016/j.micromeso.2018.10.004
Tanya Tsoncheva , Gloria Issa , Izabela Genova , Momtchil Dimitrov , Daniela Kovacheva , Jiří Henych , Martin Kormunda , Nicola Scotti , Jakub Tolasz , Vaclav Štengl

A series of titania-tin oxide binary nanosized mesoporous materials with various composition were successfully obtained by template assisted hydrothermal technique. They were characterized by nitrogen physisorption, XRD, TEM, XPS, UV-Vis, FTIR of adsorbed pyridine and Raman spectroscopes. The reduction properties of the composites were studied by TPR with hydrogen. Two environmental feasible processes, such as total oxidation of ethyl acetate as representative VOCs and decomposition of methanol as hydrogen source, which are also sensitive both to the surface and redox properties of the solids, were used as catalytic tests. On the base of detailed analyses of the data from the complex physicochemical study and comparison with the reference samples, obtained by homogeneous precipitation with urea, a possible mechanism of the formation of TiO2-SnO2 binary materials was proposed and discussed in a view of catalyst design control.



中文翻译:

水热法获得的钛-锡二元氧化物对可持续环境的结构和催化活性:评估和控制

通过模板辅助水热技术成功地获得了一系列不同组成的二氧化钛-二氧化锡二元纳米介孔材料。它们的特征在于氮的物理吸附,XRD,TEM,XPS,UV-Vis,吸附吡啶的FTIR和拉曼光谱仪。用氢进行TPR研究了复合材料的还原性能。两种环境可行的方法(例如对乙酸乙酯作为代表的VOC进行完全氧化和对甲醇作为氢源的分解)也对固体的表面和氧化还原特性均敏感,这被用作催化测试。在对复杂的物理化学研究数据进行详细分析并与参考样品进行比较的基础上,通过尿素均匀沉淀获得的参考样品是形成TiO的可能机理提出并讨论了2- SnO 2二元材料,以控制催化剂的设计。

更新日期:2018-10-11
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