Probing the Dynamics of Thermal Catalysis by Vibrational Modulation Excitation Spectroscopy (A08*)

新项目A08(N)利用漫反射红外傅里叶变换（DRIFT）和拉曼光谱研究了连续操作流动反应器反应条件下尖晶石和钙钛矿催化剂的表面和体积性质。用特别设计的加药装置在反应混合物和惰性/溶剂介质之间调制进料。根据在气相或液相中进行的反应，通过在不同的分压或浓度下共喂溶剂来研究溶剂的影响及其与反应物的相互作用。通过对相分辨光谱数据的分析，可以区分活性物质对观察者的响应。MCR-ALS还将用于瞬态时间分辨operando光谱数据提取动力学信息。

The new project A08(N) studies the surface and bulk properties of spinel and perovskite catalysts under reaction conditions in continuously operated flow reactors by operando diffuse reflectance infrared Fourier transform (DRIFT) and Raman spectroscopy. The feed is modulated between the reaction mixture and an inert/solvent medium using specially designed dosing units. The effects of solvents and their interactions with the reactants are studied by co-feeding them at different partial pressures or concentrations, depending on the reaction being performed in the gas or liquid phase. By analyzing the phase-resolved spectroscopic data, the response of active species against the spectators will be differentiated. MCR-ALS will be also used on the transient time-resolved operando spectroscopic data to extract kinetic information.