Abstract

Silica-supported catalysts of cation composition V_0,3Mo₁Te_0,23Nb_0,12 are produced using slurry method with the nature of the initial compound for the support (TEOS, silica sol, silica gel, aerosil) being varied. The synthesized catalysts are characterized via nitrogen thermodesorption, chemical and X-ray analysis, and high resolution electron microscopy. Catalytic properties are studied in the reaction of ethane oxidative dehydeogenation at a temperature of 400°С in a reaction mixture with the composition С₂Н₆ : О₂ : N₂ = 10 : 10 : 80 (vol %). It is found that samples obtained with silica gel display the greatest activity, due to the formation of nanodomens of active phase M1 in the amorphous support matrix and its partial dispersion.

中文翻译：

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VMoTeNbО/ SiO 2催化剂上乙烷的氧化脱氢及初始载体化合物对其理化和催化性能的影响

摘要

使用淤浆法制备阳离子组成为V _0,3 Mo ₁ Te _0,23 Nb _0,12的二氧化硅负载的催化剂，其中用于载体的初始化合物（TEOS，硅溶胶，硅胶，气凝胶）的性质有所不同。合成的催化剂通过氮气热脱附，化学和X射线分析以及高分辨率电子显微镜进行表征。催化性能进行了研究在乙烷氧化dehydeogenation的在400°С的温度下在反应混合物与所述组合物С反应₂ Н ₆：О ₂：N ₂＝ 10∶10∶80（体积％）。发现用硅胶获得的样品显示出最大的活性，这是由于在无定形载体基质中形成了活性相M1的纳米域及其部分分散。