The aerogel technique advantageously provides a synthetic route to prepare efficient V–Mg–O catalysts for oxidative dehydrogenation of propane. It was shown that the obtained samples are characterized by a nanocrystal structure with a developed surface area. Such catalysts, comparing with VO_x/MgO system prepared by impregnation, demonstrate superior activity in the studied reaction. The main drawback of this system is a shaping difficulty. To get the strong granules, a high molding pressure should be applied that collapses the nanostructure of the aerogels. The addition of alumina powder into the formed sol or before the sol formation stage allowed obtaining the V–Mg–O/γ-Al₂O₃ catalysts, which can be shaped easily at lower molding pressure. In this case, alumina plays the role of a binder and secondary support. The samples were characterized by low-temperature nitrogen adsorption, scanning and transmission electron microscopies, X-ray diffraction analysis, and X-ray photoelectron spectroscopy. The activity of the prepared samples, in terms of the propylene yield, was compared with the literature data.

气凝胶技术有利地提供了一条合成路线，以制备用于丙烷氧化脱氢的有效V–Mg–O催化剂。结果表明，所获得的样品的特征在于具有增大的表面积的纳米晶体结构。与通过浸渍制备的VO _x / MgO体系相比，这种催化剂在所研究的反应中显示出优异的活性。该系统的主要缺点是成型困难。为了获得坚固的颗粒，应施加较高的成型压力，以使气凝胶的纳米结构崩溃。添加氧化铝粉末成形成溶胶或溶胶形成阶段之前的允许获得V-Mg的O /γ-Al系₂ ö ₃催化剂，可以在较低的成型压力下轻松成型。在这种情况下，氧化铝起着粘合剂和辅助载体的作用。通过低温氮吸附，扫描和透射电子显微镜，X射线衍射分析和X射线光电子能谱对样品进行表征。将制备的样品的活性，就丙烯产率而言，与文献数据进行比较。