RUI: CAS: Production of Highly Reactive Metal-Oxo Species with Molecular Oxygen and Visible Light for the Selective Oxidative Catalysis

RUI：CAS：利用分子氧和可见光生产用于选择性氧化催化的高反应性金属氧物种

• 批准号: 2154579
• 负责人: Rui Zhang
• 金额: $ 22.56万
• 依托单位: Western Kentucky University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2022
• 资助国家: 美国
• 起止时间: 2022-09-01 至 2025-08-31
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2154579&HistoricalAwards=false
• 关键词: RUI; CAS; Production; Highly; Reactive

With the support of the Chemical Catalysis Program in the Division of Chemistry, Professor Rui Zhang of Western Kentucky University (WKU) will study the reaction of organic compounds with oxygen from the atmosphere using catalysts, in a process called catalytic aerobic oxidation. This process is widely used daily on a large scale for the production of valuable chemicals, the environmental remediation of pollutants, and in the production of energy. Dr. Rui Zhang and his students at WKU are working to develop bio-inspired photocatalysts that can utilize sunlight to activate and incorporate atmospheric oxygen into inexpensive materials for producing high-value commodity chemicals. The use of abundant solar energy and atmospheric oxygen rather than a chemical reagent in the oxidation of bulk chemicals generates less chemical waste, is more chemically sustainable, and potentially reduces the economic costs associated with the process. The research will impact the fundamental science and technology of green chemistry. In addition, this project will provide cutting-edge research experiences for the participating undergraduate students, including underserved students and women in science, technology, engineering, and mathematics (STEM) disciplines, thereby training future STEM professionals. High school students from the nationally renowned Gatton Academy, the residential Math and Science Academy located on WKU’s campus, will also perform research in the laboratory and learn about catalysis research.In this research, Professor Rui Zhang and his team will study metal phthalocyanine complexes (MPc’s) as sustainable and “green” oxidation catalysts in view of their easy accessibility and outstanding redox and optical properties. This research will focus on mechanistic studies and the generation of metal-oxo oxidizing species involved in MPc-based catalysis, and will use the new knowledge obtained to develop viable and practical catalytic methods for clean oxidations. Although MPc’s are very attractive and are widely applicable catalysts in many oxidation processes, mechanistic aspects of MPc-catalyzed oxidations and identification of the MPc-based metal-oxo reactive intermediates are still underdeveloped. High-valent transition metal-oxo oxidants in different macrocyclic systems can be generated photochemically and used for oxidations through disproportionation reactions. In this project, Dr. Zhang and his students at WKU aim to explore new ways to probe the nature of active oxidizing species and elucidate mechanisms extant in MPc-mediated catalysis. Importantly, a variety of new MPc-based catalysts that contain photoabsorbed units will be synthesized and investigated for photocatalytic aerobic oxidations. This research is expected to advance knowledge in metal-oxo chemistry and photocatalysis and to have long term implications for the conversion of solar energy in catalysis.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.

在化学催化计划中的支持下，西肯塔基大学（WKU）的Rui Zhang教授将使用催化剂研究有机化合物与大气中氧的反应，这是一种称为催化有氧氧化的过程。该过程每天在大规模上广泛使用，用于生产有价值的化学物质，污染物的环境修复以及能源的产生。 Rui Zhang博士及其WKU的学生正在努力开发以生物启发的光催化剂来利用阳光来激活并将大气中的氧气掺入廉价的材料中，以生产高价值商品化学品。在散装化学物质的氧化中使用丰富的太阳能和大气氧，而不是化学试剂产生的化学废物较少，化学上更可持续，并且有可能降低与该过程相关的经济成本。这项研究将影响绿色化学的基本科学和技术。此外，该项目将为参与的本科生提供尖端的研究经验，包括服务不足的学生和科学，技术，工程和数学（STEM）学科的女性，从而培训未来的STEM专业人员。 High school students from the nationally renowned Gatton Academy, the residents Math and Science Academy located on WKU’s campus, will also perform research in the laboratory and learn about catalysis research.In this research, Professor Rui Zhang and his team will study metal phthalocyanine complexes (MPc’s) as sustainable and “green” oxidation catalysts in view of their easy accessibility and outstanding redox and optical properties.这项研究将重点关注机械研究和基于MPC的催化涉及的金属氧化物种的产生，并将使用获得的新知识，尽管MPC非常有吸引力，并且在许多氧化过程中广泛适用于MPC催化氧化的机械方面，基于MPC的Metal-Metal-Metal-oxoxeS的鉴定仍然是基于METIMEDISMEDIASS的机械方面。可以在光化学上产生不同大环系统中的高价值过渡金属氧化剂，并通过不倍交反应用于氧化。在这个项目中，张博士及其在WKU的学生旨在探索新的方法，以探测主动氧化物种的性质，并阐明MPC介导的催化中广泛的机制。重要的是，将合成含有光吸光单元的各种新的基于MPC的催化剂，并研究用于光催化有氧氧化。这项研究有望提高金属氧化学和光催化的知识，并对催化中太阳能的转化具有长期影响。该奖项反映了NSF的法定任务，并被认为是通过基金会的智力优点和更广泛影响的评估标准来通过评估来获得的支持。