多相反应过程中的介尺度机制及调控

Multi-scale behavior is the common characteristics of multi-phase reaction processes which are most widely encountered in a variety of industries related to material and energy transformation and utilization. From molecules to global environment, different scales can be classified into three levels in general. The system on the lowest (material) level serves as the element of the middle (process) level, while the system on the middle level serves as the element of the upper (environment) level. Meso-scales refer to the intermediate scales in between the element and system scales on the same level. For this program, researches will focus on the meso-scale (Meso-scale 1) of interfacial phenomena in between the scales of molecules and particles (including droplets and bubbles) on the material level, and the meso-scale (Meso-scale 2) of particle clustering phenomena in between the scales of particles and reactors on the process level. Over the years, these meso-scales are not well understood and quantified, which has proven to be the bottlenecks for many technology development in the related industries. In this plan, the correlation and coupling between the dominant mechanisms at different scales which leads to meso-scale behavior will be studied, with focuses on: the compromise between reaction and mass-transfer at Meso-scale 1, the relationship between mass-transfer and hydrodynamics at Mesoscale 2 and the coupling between reaction, mass-transfer and hydrodynamics at the particle scale. The research is aimed at a physical and mathematical elucidation of the meso-scale behavior, promoting the development of the interdisciplinary meso-science, and serving the process development and optimization.

多相反应是众多行业与领域的核心过程，探索其介尺度行为的形成机理、实现其科学定量描述与定向调控已成为过程工业发展和复杂系统研究共同的前沿。所谓介尺度行为，是由大量单元组成的系统在全局与个体之间的尺度上形成的复杂时空结构。在多相反应过程中，它主要表现在分子到颗粒(包括气泡、液滴等）间的材料表界面时空尺度、以及颗粒到反应器整体间的颗粒聚团时空尺度。其中发生的化学反应（原子分子水平）受传质扩散（分子群水平）和流动（宏观统计水平）的影响而呈现复杂行为。本计划将探索该行为中不同尺度控制机制的关联与耦合，建立其物理数学表述，推动跨领域、跨学科的介尺度科学的形成与发展，并服务于相关工艺过程的开发。本项目为该计划的指导专家组调研项目。

多相反应是众多行业与领域的核心过程，探索其介尺度行为的形成机理、实现其科学定量描述与定向调控已成为过程工业发展和复杂系统研究共同的前沿。所谓介尺度行为，是由大量单元组成的系统在全局与个体之间的尺度上形成的复杂时空结构。在多相反应过程中，它主要表现在分子到颗粒（包括气泡、液滴等）间的材料表界面时空尺度、以及颗粒到反应器整体间的颗粒聚团时空尺度。其中发生的化学反应（原子分子水平）受传质扩散（分子群水平）和流动（宏观统计水平）的影响而呈现复杂行为。本计划将探索该行为中不同尺度控制机制的关联与耦合，建立其物理数学表述，推动跨领域、跨学科的介尺度科学的形成与发展，并服务于相关工艺过程的开发。.本项目为该计划的指导专家组调研项目。