Experimental and kinetic study of the nitration of 2-ethylhexanol in capillary microreactors

被引：45
|
作者：
Li, Lei [1 ,2 ]
Yao, Chaoqun [1 ]
Jiao, Fengjun [1 ]
Han, Mei [1 ]
Chen, Guangwen [1 ]
机构：
[1] Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, Dalian 116023, Peoples R China
[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
来源：
CHEMICAL ENGINEERING AND PROCESSING-PROCESS INTENSIFICATION | 2017年 / 117卷
基金：
中国国家自然科学基金;
关键词：
2-Ethylhexanol; 2-Ethylhexyl nitrate; Nitration; Microchannel reactor; Kinetics; MASS-TRANSFER; NITRIC-ACID; MIXED ACID; AROMATIC NITRATION; SULFURIC-ACID; OPTIMIZATION; NITROBENZENE; EQUILIBRIUM; PERFORMANCE; EFFICIENT;
D O I：
10.1016/j.cep.2017.04.005
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
The nitration process of 2-ethylhexanol (2-EH) with mixed acid was studied in different capillary microreactors. The conversion of 2-EH and selectivity to 2-ethylhexyl nitrate (EHN) were investigated by varying reaction temperature, molar ratio of nitrate to 2-EH, residence time and water content in mixed acid. Under optimized conditions, the conversion of 2-EH and selectivity to EHN could be up to 99% in less than 10 seconds, indicating great potential of microreactors in process intensification. Moreover, with an assumption of homogeneous reaction, a kinetic model based on first order kinetics for nitric acid and 2-EH was proposed to determine both the apparent and intrinsic reaction kinetics. By taking into account the activity of solutes that depend on the acidity (M-c), the intrinsic kinetic was obtained, which is independent of the sulfuric acid concentration. The reaction model can well predict the conversion of 2-EH.
引用
收藏
页码：179 / 185
页数：7
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