文献类型：期刊文献

英文题名：Microfluidic-based in-situ determination for reaction kinetics of hydrogen peroxide decomposition

作者：Qiu, Junjie[1,2];Tang, Weiqiang[1,2];Bao, Bo[1,2];Zhao, Shuangliang[1,2,3,4]

机构：[1]East China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Sch Chem Engn, Shanghai 200237, Peoples R China;[3]Guangxi Univ, Guangxi Key Lab Petrochem Resource Proc, Nanning 530004, Peoples R China;[4]Guangxi Univ, Sch Chem & Chem Engn, Nanning 530004, Peoples R China

年份：2021

卷号：424

外文期刊名：CHEMICAL ENGINEERING JOURNAL

收录：;EI(收录号：20212410509273);WOS:【SCI-EXPANDED(收录号:WOS:000704481600001)】；

基金：This work is supported by the National Natural Science Foundation of China (Nos. 91934302, 21808056), the PetroChina Innovation Foundation (No. 2019D-5007-0208), the Shanghai International Science and Technology Collaboration Program (No. 18160743700), and the Dean Project of Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology (No. 2020Z002).

语种：英文

外文关键词：Reaction kinetics; H2O2 decomposition; Microfluidics; Reaction density functional theory

摘要：In this work, a microfluidic approach was presented to study the reaction kinetics of hydrogen peroxide (H2O2) decomposition. The production rate of oxygen correlated to the volume change of bubbles in microchannel via in-situ visualization in order to characterize H2O2 decomposition. Kinetic models were established to determine the reaction rate constant and activation energy of H2O2 decomposition reaction as a function of temperature, initial mass fraction of H2O2, light intensity, and pH value. Meanwhile, the reaction density functional theory calculation indicated a good agreement with the conclusions from the experimental observations. This method provides a rapid, accurate and common approach to determine the kinetics of liquid-to-gas decomposition reactions. Furthermore, the set of kinetic data are beneficial to the process optimization of reactions involving H2O2.