摘要
采用ICCD探测系统和化学激波管,在压力为1.5 atm,温度为1 500 K条件下,测得了三乙胺燃烧时从紫外到近红外的瞬态发射光谱。结果表明:燃烧过程在此波段内的主要发射光谱带归属于反应中间产物NO、OH、NH、CN、和CH自由基,确定小自由基NO、OH、NH、CN、和CH是三乙胺燃烧过程中重要的反应中产物,CN自由基光谱明显比CH自由基光谱强;确定了NO、OH、NH、CN、和CH自由基特征光谱对应的电子能级跃迁;结合燃烧动力学理论从化学反应角度分析了小自由基NO、OH、NH、CN、和CH产生机制。结果为了解三乙胺燃烧反应微观过程和验证其燃烧反应机理提供了实验依据。
Using a heated shock tube and an spectroscopic detector ICCD,transient emission spectra of triethylamine in the combustion reaction were measured in the range of ultraviolet to near infrared.Experiments were conducted at a pressure of 1.5 atm and a temperature of 1500 K.Results show that the main emission bands are attributed to NO,OH,NH,CN and CH radicals produced during the combustion process,and the small radicals NO,OH,NH,CN,and CH are the important reaction products in the combustion process of triethylamine,and the spectrum of CN radical is obviously stronger than that of CH radical;Determined the electron level transitions corresponding to the characteristic spectra of NO,OH,NH,CN,and CH radicals.Analyzed the production mechanism of small free radicals of NO,OH,NH,CN and CH from the perspective of chemical reaction with the theory of combustion kinetics.The results provide experimental basis for understanding the microscopic process of triethylamine combustion reaction and verifying the mechanism of triethylamine combustion reaction.
作者
唐洪昌
李瑜
张昌华
TANG Hongchang;LI Yu;ZHANG Changhua(Officers College of RAP,Sichuan Chengdu,610213,P.R.China;Institute of Atomic and Molecular Physics,Sichuan University,Sichuan Chengdu,610065,P.R.China)
出处
《光散射学报》
北大核心
2024年第2期179-183,共5页
The Journal of Light Scattering
关键词
三乙胺
ICCD探测系统
激波管
发射光谱
反应机理
Triethylamine
ICCD detection system
Shock tube
Emission spectrum
Reaction mechanism
