The influence mechanism of solvent on the hydrogenation of dimethyl oxalate

论文摘要

The hydrogenation of dimethyl oxalate（DMO） for the producing of C2-C4 alcohols with methanol as solvent was researched at the temperature of 270 °C to 310 °C. Ethylene glycol（EG） was the main product at low temperature and the selectivity of which was 61.9% at 230 °C. However, EG selectivity decreased sharply with the increase of temperature while ethanol became the main liquid products with the selectivity of 43.5% at 270 °C. It can be ascribed to a thorough hydrogenation of DMO at a high temperature. In addition, the promotion of Guerbet reaction led to the production of propanol and butanol. Simultaneously, the amount of gas products including CO, CO2 and dimethyl ether（DME） also increased, which became a competition factor in the conversion of DMO to liquid products including C2-C4 alcohols. The blank test was carried out with pure methanol as feedstock with and without Cu/SiO2 catalyst, which revealed that methanol was involved in the formation of gas products and higher alcohols on Cu-based catalyst, and the main gas product was CO.

论文目录

• 1. Introduction
• 2. Experimental
•   2.1. Preparation of catalysts
•   2.2. Catalyst characterization
•   2.3. Activity test and product analysis
• 3. Results and Discussion
•   3.1. Morphology and physicochemical features of Cu/SiO2
•   3.2. Catalytic hydrogenation of DMO
•     3.2.1. The production of C2-C4 alcohols
•     3.2.2. The competing reaction to gas products
•   3.3. The behavior of methanol solvent
• 4. Conclusions

文章来源

类型: 期刊论文

作者: Shi Yin,Lingjun Zhu,Xiaoliu Wang,Yingying Liu,Shurong Wang

来源: Chinese Journal of Chemical Engineering 2019年02期

年度: 2019

分类: 工程科技Ⅰ辑

专业: 有机化工

单位: State Key Laboratory of Clean Energy Utilization, Zhejiang University

基金: Supported by the National Natural Science Foundation of China(51661145011,51476142),the National Science and Technology Supporting Plan Through Contract(2015BAD15B06),the Program of Introducing Talents of Discipline to University(B08026)

分类号: TQ223.122

页码: 386-390

总页数: 5

文件大小: 922K

下载量: 9