Combined Capture and Reaction in Temperature Swing Adsorption: An Integrated Approach toward VOC Emissions Control

这项研究的重点是应用基本原理来设计和开发能够成功捕获和破坏来自各种工业来源的气态污染物的材料。与目前的工艺相比，使用可以在单个集成单元中减少污染物的新材料具有降低能耗的潜力。这项研究的结果将指导高性能材料的设计和制造，用于工业污染控制过程，将有毒化合物转化为良性产品，同时符合环境标准。这项实验和建模工作将集中在材料和工艺设计和开发上。具体来说，pi将使用原子层沉积（ALD）技术合成分层混合金属氧化物（MMOs），并沉积单金属和双金属纳米颗粒（贵金属和过渡金属）。ald设计的混合吸附-催化剂材料具有分层孔结构，用于去除TSA系统中空气中的芳香烃，如苯、甲苯和二甲苯，即BTX化合物。这种杂化材料将作为吸附质的选择性质量汇，为氧化反应创造有利的浓度分布，这将反过来在解吸步骤中为杂化材料再生提供热量，从而通过高效的热集成有效地节约能源。ppi还将解决TSA工艺的设计、配置、过程建模和优化问题，以提高捕获氧化效率，并通过协同利用每种技术的固有优势，显著降低减排成本。这项教育和推广计划将为研究生、本科生和高中生，特别是来自代表性不足群体的学生，提供一个平台，培养他们对前沿科学研究的兴趣。pi将开发一个综合教育和推广计划，将研究成果纳入现有课程，并通过暑期研究学院计划为密苏里州的高中生提供研究经验。该奖项反映了美国国家科学基金会的法定使命，并通过使用基金会的知识价值和更广泛的影响审查标准进行评估，被认为值得支持。

This study is focused on applying fundamental principles to design and develop materials that can successfully capture and destroy gaseous pollutants from various industrial sources. The use of novel materials that can reduce pollutants in a single integrated unit has the potential to reduce the energy consumption compared to current processes. Results of this study will guide the design and manufacture of high-performance materials for use in industrial pollution control processes that convert toxic compounds to benign products while meeting the environmental standards.This experimental and modeling effort will be focused on both material and process design and development. Specifically, the PIs will synthesize hierarchical mixed-metal oxides (MMOs), deposited with mono and bimetallic nanoparticles (noble and transition metals), using atomic layer deposition (ALD) techniques. The ALD-designed hybrid adsorbent-catalyst materials with hierarchical pore structure are used in the removal of aromatic hydrocarbons, such as benzene, toluene, and xylene, known as BTX compounds, from air in a TSA system. Such hybrid materials will act as a selective mass sink for the adsorbate to create favorable concentration profiles for the oxidation reaction, which will in turn provide heat to regenerate the hybrid materials during the desorption step, thus effectively conserving energy through efficient heat integration. The PIs will also address the design, configuration, process modeling and optimization of the TSA process to improve capture-oxidation efficiency and enable significant reductions in the abatement cost through synergistically exploiting the inherent advantages of each technology. The educational and outreach plan will serve as a platform for graduate, undergraduate and high school students, especially from underrepresented groups, to develop interest in cutting-edge scientific research. The PIs will develop an integrated education and outreach program to incorporate research outcomes into existing coursework and provide research experiences to high school students from Missouri through the Summer Research Academy program.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.