On the High-Temperature Combustion of n-Butanol: Shock Tube Data and an Improved Kinetic Model

被引:33
作者
Vasu, Subith S. [1 ]
Sarathy, S. Mani [2 ]
机构
[1] Univ Cent Florida, Mech & Aerosp Engn Dept, Orlando, FL 32826 USA
[2] King Abdullah Univ Sci & Technol, Clean Combust Res Ctr, Thuwal, Saudi Arabia
关键词
LAMINAR FLAME SPEEDS; HYDROGEN-ABSTRACTION; CHEMICAL-KINETICS; RATE CONSTANTS; ISO-BUTANOL; MULTISPECIES MEASUREMENTS; THERMAL-DECOMPOSITION; RATE COEFFICIENTS; DIESEL-ENGINE; IGNITION;
D O I
10.1021/ef401406z
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 combustion of n-butanol has received significant interest in recent years, because of its potential use in transportation applications. Researchers have extensively studied its combustion chemistry, using both experimental and theoretical methods; however, additional work is needed under specific conditions to improve our understanding of n-butanol combustion. In this study, we report new OH time-history data during the high-temperature oxidation of n-butanol behind reflected shock waves over the temperature range of 1300-1550 K and at pressures near 2 atm. These data were obtained at Stanford University, using narrow-line-width ring dye laser absorption of the R-1(5) line of OH near 306.7 nm. Measured OH time histories were modeled using comprehensive n-butanol literature mechanisms. It was found that n-butanol unimolecular decomposition rate constants commonly used in chemical kinetic models, as well as those determined from theoretical studies, are unable to predict the data presented herein. Therefore, an improved high-temperature mechanism is presented here, which incorporates recently reported rate constants measured in a single pulse shock tube [C. M. Rosado-Reyes and W. Tsang, J. Phys. Chem. A 2012, 116, 9825-9831]. Discussions are presented on the validity of the proposed mechanism against other literature shock tube experiments.
引用
收藏
页码:7072 / 7080
页数:9
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