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

通过振动调制激发光谱探索热催化动力学 (A08*)

• 批准号: 506636663
• 金额: --
• 依托单位: Lehrstuhl für Technische Chemie
• 依托单位国家: 德国
• 项目类别: CRC/Transregios
• 资助国家: 德国
• 项目状态: 未结题
• 来源: https://gepris.dfg.de/gepris/projekt/506636663?language=en
• 关键词: Probing; Dynamics; Thermal; Catalysis; Vibrational

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.

新项目A08（N）通过操作漫反射红外傅里叶变换（DRIFT）和拉曼光谱研究了尖晶石和钙钛矿催化剂在连续操作流动反应器中的反应条件下的表面和本体性质。使用专门设计的计量单元在反应混合物和惰性/溶剂介质之间调节进料。溶剂的影响和它们与反应物的相互作用通过在不同的分压或浓度下共同进料来研究，这取决于在气相或液相中进行的反应。通过分析相位分辨光谱数据，区分活性物种对旁观者的响应。MCR-ALS也将用于瞬态时间分辨操作光谱数据，以提取动力学信息。