Abstract

Ethoxy groups, acetate complexes, and condensation products were detected on the surface of a 5% CuO/ZrO₂ catalyst using in situ IR spectroscopy under conditions of ethanol conversion. Formate complexes were not observed under the reaction conditions. Acetaldehyde, acetone, CO₂, and ethylene were detected as the main reaction products of ethanol conversion; hydrogen, butane, and toluene were also formed in small amounts. Acetaldehyde was formed by the interaction of ethoxy groups and surface hydroxyl groups. Acetone, butane, and toluene resulted from the conversion of condensation products. The low rate of hydrogen formation on this catalyst was due to the absence of a high-temperature formate complex from the catalyst surface.

中文翻译：

---

根据原位红外光谱数据在5％CuO / ZrO 2催化剂上乙醇转化的机理

摘要

在乙醇转化条件下，使用原位红外光谱法在5％CuO / ZrO ₂催化剂的表面检测到乙氧基，乙酸盐络合物和缩合产物。在反应条件下未观察到甲酸酯配合物。乙醛，丙酮，CO ₂和乙烯是乙醇转化的主要反应产物。氢气，丁烷和甲苯也少量生成。乙醛是通过乙氧基和表面羟基的相互作用而形成的。缩合产物的转化产生了丙酮，丁烷和甲苯。在该催化剂上低的氢形成速率是由于催化剂表面不存在高温甲酸盐配合物。