摘要
设计了松香和枞酸在聚乙烯膜上的氧化反应器,建立了枞酸在聚乙烯膜上的紫外分光光度分析方法,跟踪测定了松香和枞酸氧化反应的过程.实验结果表明,松香和枞酸的氧化反应均呈现表观一级反应.枞酸的氧化反应温度为30,35,40,45,50和55℃时,表观速率常数分别为0.0036,0.0041,0.0062,0.0087,0.011和0.0157 min-1,表观反应活化能Ea为50.29 kJ/mol.松香的氧化反应温度为35,40和45℃时,表观速率常数分别为0.0009,0.0015和0.0025 min-1,表观反应活化能Ea为80.2 kJ/mol.
The kinetics of thermal oxidation of rosin and abietic acid absorbed on the polyethylene film were respectively studied. The kinetic equation of heat oxidation was determined by UV spectrophotometry. The experimental results show that the thermal oxidation reaction of both rosin and abietic acid are pseudo first order reaction. When the reaction temperatures were 303.15, 308. 15, 313.15, 318. 15, 323.15 and 328. 15 K, respectively, the apparent reaction rate constants of abietic acid were 0. 0036, 0. 0041, 0. 0062, 0. 0087, 0. 011 and 0. 0157 min^-1, respectively. Its reaction activation energy was 50. 29 kJ/mol, when the reaction temperatures were 308. 15, 313.15 and 318.15 K, respectively, the apparent reaction rate constants of rosin were 0. 0009, 0. 0015 and 0. 0025 min ^-1 The reaction activation energy was 80. 2 kJ/mol.
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
2009年第5期954-958,共5页
Chemical Journal of Chinese Universities
基金
国家科技支撑计划课题(批准号:2007BAD82B01)
广西科学基金项目(批准号:桂科基0639001)
广西科学研究与技术开发计划(批准号:桂科攻0428004-1)资助
关键词
松香
枞酸
氧化反应
动力学
速率常数
Rosin
Abietic acid
Oxidation reaction
Kinetics
Rate constant
