Abstract

The results of a study of Pd/TiO₂ and Pd/ZrO₂ catalysts prepared by impregnation using different heat treatment conditions in the oxidation reaction of 5-hydroxymethylfurfural (5-HMF) are presented. The catalysts were characterized using XRD analysis, X-ray fluorescence spectroscopy (XFS), low-temperature nitrogen adsorption, and pulse CO adsorption. Catalytic studies were carried out under mild conditions of 5-HMF oxidation at a temperature of 80°C and an oxygen pressure of 5 atm with the use of NaHCO₃ as an alkaline agent. It was found that the conditions of thermal treatment significantly affected the formation of an active component in the Pd/TiO₂ and Pd/ZrO₂ catalysts and determined the dispersity of the active component, its interaction with the support, and, as a consequence, the catalytic properties of the resulting materials.

中文翻译：

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负载型含钯催化剂上 5-羟甲基糠醛的氧化

摘要

介绍了采用不同热处理条件浸渍制备的Pd/TiO ₂和Pd/ZrO ₂催化剂在5-羟甲基糠醛(5-HMF)氧化反应中的研究结果。采用 XRD 分析、X 射线荧光光谱 (XFS)、低温氮气吸附和脉冲 CO 吸附对催化剂进行了表征。使用NaHCO ₃作为碱性试剂，在80℃温度和5atm氧气压力的温和条件下进行5-HMF氧化的催化研究。结果发现，热处理条件显着影响Pd/TiO ₂和Pd/ZrO _{2中活性组分的形成。}催化剂并确定活性组分的分散性、其与载体的相互作用，以及由此产生的材料的催化性能。