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

1509432(梅森)化学循环燃烧(CLC)是一种新兴的气态燃料燃烧方法，它可以将二氧化碳从烟气中的其他成分中分离出来，从而实现低成本和高效的二氧化碳分离和捕获。该项目的潜在成功将有助于避免对地球大气层和气候造成负面影响。拟议的活动还将通过让本科生和研究生参与研究来促进培训和学习活动。众所周知，关于《中图法》氧载体表面科学的分子水平的细节之间存在知识差距。虽然候选批次研究已经帮助确定了载体，但结构-反应性关系和燃料氧化涉及的中间多相步骤的细节尚不清楚。这项拟议的研究旨在加强对CLC重要多相过程中涉及的基本反应机理的了解，以及相关的催化应用。氧载体的热力学稳定性将通过实验和理论方法进行评估，并将确定载体结构、组成、耐久性和反应性之间的趋势。所获得的知识可能会推动未来CLC材料的合理设计和相关应用。甲烷燃料及其与许多其他反应活性相关的C-H键活化将被研究。还将调查化学合成和用烷烃取代石化原料，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.