低压丙烷-氧混合物均相-非均相活化反应中ZnO修饰硅表面的结构和催化特性

P. Gukasyan, Sevda B. Mkhitaryan, S. M. Vardapetyan, V. Sarkeziyan, O. A. Kamalyan
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引用次数: 0

摘要

采用溶胶-凝胶法和化学传递反应(CTR)对氧化锌改性硅胶表面的结构和催化特性进行了研究。研究发现,所获得的触点的催化活性取决于负载ZnO的性质和结构和结构特征。以低温氧化丙烷的反应为例,发现CTR改性法的自由基从表面向体积释放的下限比溶胶-凝胶法低15-20度。结果表明,采用CTR法将活性相作用于载体表面得到的催化剂,由于其活性中心的能量均匀性和表面的织构特性,得到的催化剂效率更高。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
TEXTURAL AND CATALYTIC FEATURES OF SILICON SURFACE MODIFIED WITH ZnO IN THE REACTION OF HOMOGENOUS-HETEROGENEOUS ACTIVATION OF PROPANE-OXYGEN MIXTURES AT LOW PRESSURES
The textural and catalytic characteristics of the surface of silica gel modified with zinc oxide by the sol-gel method and by means of a chemical transport reaction (CTR) have been studied. It was found that catalytic activity of the obtained contacts depends on both the nature and the structural and textural characteristics of the supported ZnO. Using the example of the reaction of low-temperature oxidation of propane, it was found that lower limit of the release of radicals from the surface into the volume with the CTR modification method is lower by 15–20 degrees than in the case of the sol-gel method. It was shown that the catalyst obtained by applying the active phase on the surface of the support by the CTR method is more efficient due to the energy homogeneity of its active centers and the texture characteristics of the surface.
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