摘要
以五氧化二磷和正丁醇反应合成的混合磷酸酯为原料,考察了在50～80℃下焦磷酸正丁酯及焦磷酸二正丁酯的水解反应,并建立了焦磷酸正丁酯及焦磷酸二正丁酯的水解反应速率方程。结果表明:对焦磷酸正丁酯,反应级数为1.48,表观活化能为72.91kJ/mol,指前因子为2.24×10^(10) L^(2.28)/(mol^(2.28)·h);对焦磷酸二正丁酯,反应级数为1.23,表观活化能为85.02kJ/mol,指前因子为1.79×10^(11) L^(2.22)/(mol^(2.22)·h)。通过实验数据拟合获得了动力学方程,其焦磷酸正丁酯和焦磷酸二正丁酯转化率的计算值和实验值吻合较好,具有可靠性。
Phosphate compounds were synthesized from phosphorus pentoxide and n-butanol. The hydrolysis kinetics of n-butyl pyrophosphate and di-n-butyl pyrophosphate were investigated under 50-80℃ and hydrolysis reaction rate equations were built up. The results showed that for n-butyl pyrophosphate, the reaction order was 1.48, the apparent activation energy was 72.91 kJ/mol and the pre-exponential factor was 2. 24 × 10^10 L^2.28/（mol^2.28 · h） and for di-n-butyl pyrophosphate, the reaction order was 1.23, the apparent activation energy was 85.02 kJ/mol, the pre-exponential factor was 1.79× 10^11 L^2.22/（mol^2.22 · h）. The hydrolysis reaction rate equations of n-butyl pyrophosphate and di-n-butyl pyrophosphate were obtained by fitting the experimental data. The conversions of n-butyl pyrophosphate and all-n-butyl pyrophosphate from the equations were in good agreement with the experimental values.
出处
《化学反应工程与工艺》
CAS
CSCD
北大核心
2010年第4期376-380,共5页
Chemical Reaction Engineering and Technology
关键词
焦磷酸正丁酯
焦磷酸二正丁酯
水解
动力学
n-butyl pyrophosphate
di-n-butyl pyrophosphate
hydrolysis
kinetics
