CAS: Sustainable Carboxylation with Carbon Dioxide at Tailored Heterogeneous Electrocatalysts

美国的化学制造是经济利益的来源，但它也可能造成环境污染。该项目的目标是开发新的化学制造方法，以优化效益并将问题降至最低。化学系的化学催化项目正在资助麻省理工学院教授Karthish Manthiram的工作，开发利用二氧化碳、简单含碳分子、水和电制造聚合物(塑料)的方法。这一新工艺可能会提供一条高度可持续的“碳负塑料”之路。这个项目的关键是使用金属催化剂，这种催化剂可以将二氧化碳添加到由氢和碳组成的分子中。在实验室研究的同时，正在制定一项针对中学女孩的新的外展计划。本课程讲授化学制造中的可再生能源的化学原理。这些努力促进妇女和代表不足的少数群体参与研究和STEM研究领域。电化学羧化作用能够从二氧化碳和净温室气体排放为负的可再生电力中可持续地合成各种有价值的羧酸。丙烯酸是一种大宗商品化学品，其可持续合成备受关注。在化学系化学催化计划的支持下，Karthish Manthiram教授正在领导一个项目，开发电化学羧化作用，作为可持续地从二氧化碳和乙烯合成丙烯酸的新合成路线的关键驱动因素。要激活乙烯进行羧化，必须将其卤化，这可以在常温或近常温条件下完成。该反应生成多种卤代中间体。本项目致力于研究如何通过开发银基催化剂对这些卤代乙烯衍生物进行电催化羧化。麻省理工学院的曼蒂拉姆实验室正在开发一项推广计划，旨在传达如何利用化学知识来理解全球变暖和解决化学合成中的问题。该计划面向中学女生，帮助提高女性和少数族裔在科学中的代表性。这一奖项反映了NSF的法定使命，并通过使用基金会的智力价值和更广泛的影响审查标准进行评估，被认为值得支持。

Chemical manufacturing in the United States is source of economic benefits, though it can also be a contributor to environmental pollution. The project is conceived with the goal of developing new methods of chemical manufacturing that optimize the benefits and minimize the problems. The Chemical Catalysis program in the Division of Chemistry is funding work by Professor Karthish Manthiram at the Massachusetts Institute of Technology to develop methods of making polymers (plastics) using carbon dioxide, simple carbon-containing molecules, water, and electricity. The new process may provide a highly sustainable route to “carbon-negative plastics.” Key to this this project is the use of metal catalysts that can add carbon dioxide to molecules made of hydrogen and carbon. In parallel with the laboratory research, a new outreach program targeted at middle school girls is being developed. This program teaches chemical principles surrounding renewable energy for chemical manufacturing. These efforts promote the involvement of women and underrepresented minorities in research and STEM fields of study.Electrochemical carboxylation can enable the sustainable synthesis of a wide variety of valuable carboxylic acids from carbon dioxide and renewable electricity with net-negative greenhouse gas emissions. Acrylic acid is a large-volume commodity chemical whose sustainable synthesis is highly sought. With the support of the Chemical Catalysis Program in the Division of Chemistry, Professor Karthish Manthiram is leading a project to develop electrochemical carboxylation as a key driver for a novel synthetic route to sustainably produce acrylic acid from carbon dioxide and ethylene. To activate ethylene for carboxylation, it is necessary to halogenate it, which can be done at ambient or near-ambient conditions. This reaction leads to a variety of halogenated-intermediates. This project is focused on studying how to electrocatalytically carboxylate these halogenated ethylene derivatives by developing silver-based catalysts. The Manthiram Lab at MIT is developing an outreach program that conveys how knowledge of chemistry can be used to understand global warming and solve problems in chemical synthesis. The program is targeted at middle school girls, helping to improve representation of women and underrepresented minorities in science.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.