CO2通过与可再生生物炭的Boudouard反应（CO2+C→2CO）转化为高附加值的CO具有广泛的应用前景，但传统热化学方法需要依赖高温（一般＞850℃）和高性能催化剂的共同作用，严重制约其应用。本项目提出采用大气压脉动射流低温等离子体技术，基于高能电子和活性粒子的作用突破传统热化学反应动力学障碍，摆脱对高温和催化剂的依赖。同时，利用等离子体射流驱动生物炭形成气固流态化反应区，提高反应效率。项目结合实验研究、理论分析和数值模拟，阐明等离子体放电机制和物理特性，实现物理参数的有效调控；建立高效等离子体-流态化反应区，进而研究生物炭特性、等离子体物理特性及反应条件等因素对CO2与生物炭反应效果的影响规律；探索关键中间粒子的产生及湮灭机理，建立等离子体化学反应动力学模型，揭示等离子体作用下CO2与生物炭的反应机理。最终为不依赖催化剂、常压低温下实现CO2高效转化为CO探索出灵活便捷的可行途径。

The conversion of CO2 to value-added CO via the Boudouard reaction (CO2+C→2CO) with renewable biochar as reactant has shown promising prospects. Whereas, high temperature condition (normally >850℃) and high-performance catalyst are both mandatory in the traditional thermochemical routes, thus severely restricting its potential application. In this study, an atmospheric pressure pulsed non-thermal plasmatron technology is proposed with the objective of breaking through the obstacle of the traditional thermochemical reaction kinetics. Based on the facilitating effects of highly energetic electrons and reactive species in plasma, the Boudouard reaction can proceed with the elimination or relaxation of both high-temperature condition and catalyst. In addition, a fluidization reaction area can be formed with the driving effect of plasma jet on the introduced biochar particles, thus resulting in an enhancement in the efficiency of gas-solid reaction. This project intends to conduct a systematic investigation with the combination of experimental research, theoretical analysis, and modelling study. The discharge mechanisms of plasma will be illustrated and the physical properties will be characterized, based on which an effective regulation of the plasma can be obtained. After the establishment of a stable and efficient plasma-fluidization reaction area, the effects of biochar properties, plasma characteristics as well as the reaction conditions on the reaction performance of CO2 and biochar will be further investigated. In addition, the formation and vanishment of key intermediate species will be intensively explored, providing valuable information for the establishment of a plasma-chemical reaction kinetics model, which will then help to reveal the mechanisms of the plasma-chemical reaction between CO2 and biochar. Based on the aforementioned investigation, it is deeply expected that a novel method for the flexible and efficient conversion of CO2 to CO at atmospheric pressure with the elimination or relaxation of both high-temperature condition and catalyst can be developed.