UNS: Insights into Chemical Looping Combustion Through a Combined Theory and Experimental Approach

化学链燃烧（CLC）是一种新兴的气体燃料燃烧方法，其中二氧化碳（CO2）可以与烟道气中的其他组分分离，从而能够低成本且有效地分离和捕获CO2。 该项目的潜在成功将有助于避免对地球大气和气候的负面影响。 拟议的活动还将促进培训和学习活动，让本科生和研究生参与研究。虽然候选批次研究有助于确定载体，但结构-反应性关系的细节和燃料氧化中涉及的中间非均相步骤尚不清楚。 拟议的研究旨在提高CLC的重要的多相过程和相关的催化应用中所涉及的基本反应机制的理解。 氧载体的热力学稳定性将通过实验和理论方法进行评估，并确定载体结构，组成，耐久性和反应性之间的趋势。 由此获得的知识可能会推动未来CLC和相关应用的材料的合理设计。 甲烷燃料及其C-H键活化与许多其他反应活动将进行研究。 还将研究化学合成和烷烃替代石化原料，扩大该项目的潜在影响。

1509432 (Mason)Chemical looping combustion (CLC) is an emerging gaseous fuel combustion method in which carbon dioxide (CO2) can be separated from other components in the flue gas, enabling a low-cost and efficient separation and capture of CO2. The potential success of this project will help avoid negative impact on the earth's atmosphere and climate. The proposed activities will also promote training and learning activities by involving undergraduate and graduate students in research.The knowledge gap is known to exist among molecular-level details about the surface science of oxygen carriers of CLC. While candidate batch studies have helped identify carriers, details of structure-reactivity relationships and the intermediate heterogeneous steps involved in the fuel oxidation are yet unknown. The proposed study aims to enhance the understanding of the fundamental reaction mechanisms involved in important heterogeneous processes of CLC and related catalytic applications. The thermodynamic stability of oxygen carriers will be assessed through experimental and theoretical methods and trends between carrier structure, composition, durability, and reactivity will be identified. The knowledge thus gained may drive the future rational design of materials for CLC and related applications. The methane fuel and its C-H bond activation related to many other reaction activities will be studied. Chemical synthesis and the replacement of petrochemical feed stocks by alkanes will also be investigated, expanding the potential impact of this project.