摘要
以气相色谱、红外光谱为主要分析手段，对气态ＣＦ２ＣｌＢｒ在ＣＦ２ＣｌＢｒ－Ｃ６Ｈ１２体系中的紫外光解离进行了研究．结果表明，在２５３．７ｎｍ紫外光照射下，该体系的主要光解产物为ＨＣＦ２Ｃｌ、ＨＢｒ以及Ｃ６Ｈ１２的聚合物．体系中ＣＦ２ＣｌＢｒ的解离近似为表观一级反应，解离反应的速率常数为２．８７７×１０－６ｓ－１，表观量子产率约为０．１．基于此，对该光解反应的机理做了分析．
The paper studied the photodissociation of gas state CF2ClBr in the system of CF2ClBrC6H12 with Gas Chromatography and FTIR spectra as the main analysis method.The results showed that the system gives main products as HCF2Cl,HBr and C6H11(C6H10)n C6H11 under the 2537nm UV light.The dissociation of CF2ClBr in this system is about oneorder and the corresponding rate constant is 2877×10-6s-1.The apparent quantum yield of CF2ClBr is about 01.Based on these results,the photodissociation mechanism of this system was analyzed.
出处
《环境科学》
EI
CAS
CSSCI
CSCD
北大核心
1998年第4期5-8,共4页
Environmental Science
基金
国家自然科学基金
关键词
紫外光
光解离
大气化学
烷烃条件
环境污染
CF2ClBr,C6H12,2537nm UV light,photodissociation,atmospheric chemistry.
