多相反应过程中颗粒表界面介尺度结构形成机理与反应的定向调控

项目名称： 多相反应过程中颗粒表界面介尺度结构形成机理与反应的定向调控

项目编号： No.91434202

项目类型： 重大研究计划

立项/批准年度： 2015

项目学科： 数理科学和化学

项目作者： 褚良银

作者单位： 四川大学

项目金额： 350万元

中文摘要： 本项目针对国家自然科学基金委重大研究计划“多相反应过程中的介尺度机制及调控”的第一个关键科学问题——“反应器微元及微反应系统中介质、材料及表界面介尺度结构的形成机理与反应的定向调控”，提出利用微流控技术作为实验技术平台来深入开展多相反应过程中颗粒表界面介尺度结构形成机理与反应定向调控的基础研究，系统研究液滴颗粒界面上两亲分子以及纳米颗粒有序排布聚集态的介尺度结构的可控性及稳定性，深入研究液滴颗粒界面介尺度结构与界面上传递-反应过程的相互关系及其调控规律，揭示传递与反应过程的机制及其耦合，甄别其中的多种控制机制及其相互关系，阐明其对表界面介尺度结构形成的影响，科学定量描述颗粒界面介尺度结构、反应路径、反应产物的成分和结构间的相互影响，研究相关过程的调控手段与方法，从而提出相关反应过程定向调控的新方法和新途径，为实现多相反应过程强化与理性调控提供理论基础。

中文关键词： 介尺度结构；微流控；颗粒表界面；界面稳定性；界面传质与反应

英文摘要： This project aims at contributing to the first key scientific issue of the NSFC major research program “Mechanism and manipulation of mesoscales in multi-phase reaction processes”: “The formation mechanism of mesoscale structures of medium, materials as well as surface and interface in the infinitesimal of reactor or in the microreactor system and rational manipulation of reactions”. In this project we propose the use of microfluidic technology as a platform to carry out the systematic experimental research on the formation mechanism of mesoscale structures on particles and rational manipulation of reactions in multi-phase reaction processes. The degree of control and stability of the mesoscale structures is influenced by the packing of amphiphilic molecules and nanoparticles at the interfaces of droplets and particles; the exact relationship will be investigated systematically. The effects of the interfacial mesoscale structure on the interfacial mass-transfer and reaction processes will be studied in detail. The mechanism and coupling of interficial mass-transfer and reaction processes will be revealed, from which a variety of control mechanisms and their relationships will be screened and the impact on the formation of mesoscale structures on surfaces and interfaces will be clarified. The interactions between the mesoscale structures, reaction pathways, composition and structure of the reaction products will be quantified. The understanding of the interactions will enable the rational design of new methods and approaches for controlling the mesoscale structures through manipulation of the corresponding reactions. The research results will provide fundamentals for achieving the process intensification and rational manipulation of multi-phase reaction processes.

英文关键词： mesoscale structure;microfluidics;particle surface and interface;interfacial stability;interfacial mass-transfer and reaction