Abstract

Copper-containing catalysts based on CeO₂–ZrO₂ solid solutions were prepared by the Pecini method and studied using a set of physicochemical methods. It was found that the bond strength of oxygen on the catalyst surface, which depends on the properties of supported copper oxide clusters and a ratio between CeO₂ and ZrO₂ in the support, plays a main role in ethanol conversion. Ethoxy groups, acetate and formate complexes, and condensation products were detected as main surface intermediates formed in the course of ethanol conversion on the catalysts. The decomposition of the formate complexes was the key stage in the formation of hydrogen. Its appearance on the surface of the catalysts was due to the competition between the reactions of formate and acetate complex formation for oxygen with suitable properties.

中文翻译：

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根据原位红外光谱数据，乙醇转化反应中基于铈-氧化锆载体的含铜催化剂

摘要

基于CeO ₂ –ZrO ₂固溶体的含铜催化剂通过Pecini 方法制备，并使用一组物理化学方法进行研究。发现氧在催化剂表面的结合强度取决于负载的氧化铜簇的性质和CeO ₂和ZrO ₂之间的比率在载体中，在乙醇转化中起主要作用。乙氧基、乙酸酯和甲酸酯配合物以及缩合产物被检测为在催化剂上乙醇转化过程中形成的主要表面中间体。甲酸配合物的分解是氢气形成的关键阶段。它在催化剂表面的出现是由于甲酸盐和乙酸盐络合物形成反应之间对具有合适性质的氧的竞争。