Jisong Zhang, Yangcheng Lu, Qianru Jin
Sep 1, 2012
Citations
1
Influential Citations
42
Citations
Journal
Chemical Engineering Journal
Abstract
highlights " The kinetics of dehydrochlorination of dichloropropanol is studied in a microreactor. " 2,3-Dichloro-1-propanol is much less reactive than 1,3-dichloro-2-propanol. " Rate constants are determined in the temperature range of 50-80 C. " The kinetics is found to be first order to (OH � ) and second order to (DCP). abstract The reaction kinetics of dehydrochlorination of dichloropropanol (including 1,3-dichloro-2-propanol and 2,3-dichloro-1-propanol) is investigated with a microchemical system, which is constructed with a micromixer, a micro-tube and a microneutralizer. The reaction starts up by mixing dichloropropanol solution and sodium hydroxide solution in the micromixer, proceeds in the following micro-tube for a residence time strictly controlled to several seconds, and quenches in the microneutralizer. The results show that 2,3-dichloro-1-propanol is much less reactive than 1,3-dichloro-2-propanol. Rate constants of the dehydrochlorination reaction (2,3-dichloro-1-propanol) are determined in the temperature range of 50-80 C. The reaction kinetics is found to be first order with respect to hydroxyl ion concentration and second order to dichloropropanol concentration. The activation energy is 150 (±10) kJ mol � 1 and the pre-