IEC 171 |
| Maw-Ling Wang, Department of Chemical Engineering, Tung Hai University, Taichung Port Road, Section 3, Taichung, 407, Taiwan and Yu-Ming Hsieh, Department of Chemical Engineering, National Tsing Hua University, No. 101, Section 2, Kwang-Fu Road, Hsinchu, 300, Taiwan. |
| In this work, the phase transfer catalyzed reaction of chloroform and 1,7-octadiene was carried out in an alkaline solution of NaOH/chloroform two-phase medium. Dichlorocarbene, which is an active species to react with 1,7-octadiene in the organic phase, is generated from the reaction of chloroform, sodium hydroxide and quaternary ammonium salt at the interface between two phases. The reaction is dramatically enhanced by adding a small quantity of quaternary ammonium salt. Interfacial reaction mechanism was proposed to explain the characteristics of the reaction. A pseudo first order rate law is used to describe the reaction rate at high alkaline concentration (50 wt%). Kinetics of the reaction, including the effect of the reaction conditions such as the agitation speed, temperature, phase transfer catalysts and their amounts, the amount of chloroform, the amount of 1,7-octadiene, inorganic salt (NaCl) and the amount of sodium hydroxide on the conversion of 1,7-octadiene were investigated. A rational explanation was made for a peculiar phenomenon that the conversion of 1,7-octadiene (or the reaction rate) was increased and then decreased with the increase in the amount of sodium hydroxide. |
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General Poster Session
5:00 PM-7:00 PM, Tuesday, March 25, 2003 Convention Center -- Hall G, Poster
Division of Industrial and Engineering Chemistry |