论文部分内容阅读
本文研究4-氯丁二烯-1,2在氯化亚铜和盐酸存在下催化异构化为2-氯丁二烯-1,3的反应动力学. ??作者曾测定2-氯丁二烯-1,3和4-氯丁二烯-1,2的吸收光谱,在波长为223mμ处,2-氯丁二烯-1,3的克分子消光系数达最大值(ε=26,000),而4-氯丁二烯-1,2在同一波长处的克分子消光系数为560.本文利用此二化合物在223mμ处对紫外光吸收量的不同,来测定上述异构化反应的速度. 从实验结果推出上述异构化反应为二级反应: ?? 与4-氯丁二烯-1,2及氯化亚铜各为一级反应.此二级反应速度常数k在36°时为1.9×10~(-2)升/克分子·分钟.
In this paper, the kinetics of 4-chloroprene-1,2 catalyzed isomerization to 2-chlorobutadiene-1,3 in the presence of cuprous chloride and hydrochloric acid has been studied. The absorption spectra of diene-1,3 and 4-chloroprene-1,2 showed the highest molar extinction coefficient of 2-chlorobutadiene-1,3 at a wavelength of 223 mμ (ε = 26,000) , While the molar extinction coefficient of 4-chloroprene-1,2 at the same wavelength is 560. The rate of the above isomerization reaction is measured by the difference of ultraviolet absorption of the two compounds at 223mμ. From the experimental results introduced the isomerization reaction for the second reaction :? and 4-chloroprene-1,2 and cuprous chloride each for the first-order reaction. The second-order reaction rate constant k at 36 ° 1.9 × 10 ~ (-2) liters / mole · minute.