权益分类	功能权益	普通用户	{{item.name}}会员
{{category.name}}	{{benefitItem.name}}

Dielectric Loss Processes and Microwave Effects on Reactions in Homogeneous Solutions

均匀溶液中反应的介电损耗过程和微波效应

基本信息

批准号：
1665029
负责人：
Albert Stiegman
金额：
$ 47万
依托单位：
Florida State University
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
2017
资助国家：
美国
起止时间：
2017-08-01 至 2022-07-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=1665029&HistoricalAwards=false
关键词：
Dielectric Loss Processes Microwave Effects

项目摘要

In this project, funded by the Chemical Structure, Dynamic & Mechanism B Program of the Chemistry Division, Professor Albert E. Stiegman at Florida State University and Professor Gregory B. Dudley at West Virginia University are developing a better fundamental understanding of how microwave heating can impact dynamic chemical processes. The discovery that microwave energy can create heat within a system has had profound impacts on society, but only in the last few decades has this technology found tactical use in organic chemistry. The long-term goal of this project is to harness microwave energy strategically to expand the capabilities of organic chemistry. This multidisciplinary project lies at the interface of chemical reaction kinetics, thermodynamics, and chemical synthesis. It provides excellent education and training for students from diverse backgrounds, including those from under-represented groups, to enter a dynamic and multidisciplinary workforce in the global innovation-based economy. An emphasis is being placed on widespread dissemination of emerging theories of microwave dielectric heating through online tutorial websites, scientific workshops, and perspective articles aimed at helping the research community with the strategic application of microwave heating in organic chemistry.Microwave dielectric heating is known to enable volumetric heating of homogeneous systems and selective heating of heterogeneous systems, but selective heating of multicomponent solutions is not well documented. The planned experiments are expected to demonstrate that: (1) selective heating can perturb thermal equilibrium in multicomponent solution, (2) perturbation of thermal equilibrium produces chemical dynamics and reactivity patterns that cannot be produced with convective heating, and (3) solutions that are amenable to selective heating can be rationally designed and optimized. The proposed research efforts could advance knowledge and understanding of chemical dynamics under microwave dielectric heating, including how they differ from convective heat-transfer processes. Selective heating in multicomponent solution can have profound impacts on synthetic chemistry, including fine-chemical synthesis, catalysis, green chemistry, flow chemistry, etc.

在这个由化学部化学结构、动态和机理B项目资助的项目中，佛罗里达州立大学的Albert E. Stiegman教授和西弗吉尼亚大学的Gregory B. Dudley教授正在对微波加热如何影响动态化学过程进行更好的基础理解。微波能在系统内产生热量的发现对社会产生了深远的影响，但直到最近几十年，这项技术才在有机化学中找到了战术用途。该项目的长期目标是战略性地利用微波能量来扩大有机化学的能力。这个多学科项目是化学反应动力学，热力学和化学合成的界面。它为来自不同背景的学生，包括来自代表性不足群体的学生，提供优秀的教育和培训，以进入全球创新经济中充满活力和多学科的劳动力队伍。重点是通过在线教程网站、科学研讨会和观点文章广泛传播新兴的微波介质加热理论，旨在帮助研究团体在有机化学中战略性地应用微波加热。众所周知，微波介质加热可以使均匀系统的体积加热和非均匀系统的选择性加热成为可能，但多组分溶液的选择性加热还没有很好的文献记载。计划中的实验有望证明：(1)选择性加热可以扰乱多组分溶液中的热平衡；(2)热平衡扰动产生对流加热无法产生的化学动力学和反应模式；(3)可以合理设计和优化适合选择性加热的溶液。所提出的研究工作可以促进对微波介质加热下化学动力学的认识和理解，包括它们与对流传热过程的区别。多组分溶液中选择性加热对合成化学产生了深远的影响，包括精细化学合成、催化、绿色化学、流动化学等。