CAREER SusChEM: Recyclable transfer hydrogenation catalysts by tuning non-innocent catalytic supports

职业描述：可持续催化工艺的发展要求在催化过程中尽量减少使用稀有、昂贵和有毒的金属，从而增加对适用于工业过程的地球丰富和良性催化材料的依赖。同时，需要找到建设性地使用工业废物的新方法，例如燃烧过程中产生的二氧化碳和生物柴油生产中产生的甘油。在化学催化项目的资助下，Voutchkova-Kostal博士正在通过开发基于地球上丰富的金属的可回收催化剂来应对这些挑战，这些金属可用于将二氧化碳和甘油转化为甲酸和二羟基丙酮，从而将两种废物流转化为有用的工业化学品。她正在通过跨学科的绿色化学，环境健康和科学政策论坛以及强调探究式学习的新的研究型有机化学实验室模块，将她的工作的更广泛影响扩展到大学和更大的DC社区。这些活动的桥梁领域的绿色化学，政策和公共卫生的研究生和本科生从事这些disciplines. Supported单点多相催化剂（SSHC），可以匹配的活性和选择性的均相类似物的发展需要的相互作用和潜在的协同作用之间的基本理解支持和固定化金属络合物。在化学催化项目的资助下，Voutchkova-Kostal博士正在探索结构-性质-活性关系，这些关系是可预测地设计活性，选择性和长寿命的SSHC以应对具有挑战性的转移氢化反应所需的。具体而言，铱和铑的有机金属配合物固定到电子可调的层状双氢氧化物支持通过磺酸酯连接。表面敏感和体光谱技术的补充用于探测影响催化活性和稳定性的电子效应。开发的见解适用于优化的活性，选择性和稳定性的可回收的非均相催化剂转移氢化二氧化碳从甘油，以及可回收的催化剂不对称转移氢化。为了将这项工作和绿色化学的其他发展对大学和更大的DC社区产生更广泛的影响，Voutchkova-Kostal博士正在共同组织一个跨学科的绿色化学，环境健康和科学政策论坛，促进科学家和公众之间关于热门科学问题的对话。为了让学生参与研究，她还实施了新的以研究为基础的有机化学实验室模块，强调以探究为基础的学习。

CAREER SusChEM: Recyclable transfer hydrogenation catalysts by tuning of non-innocent catalytic supports The development of sustainable catalytic processes requires minimizing the use of rare, expensive, and toxic metals in catalysis, thus increasing reliance on earth-abundant and benign catalytic materials that are applicable to industrial processes. Concurrently, there is a need for finding new ways of constructively using industrial waste products, such as carbon dioxide generated in combustion processes and glycerol generated in biodiesel production. With funding from the Chemical Catalysis program, Dr. Voutchkova-Kostal is addressing these challenges by developing recyclable catalysts based on earth-abundant metals that are useful for converting carbon dioxide and glycerol into formic acid and dihydroxyacetone, thus turning two waste streams into useful industrial chemicals. She is extending the broader impacts of her work to the University and greater DC communities via an interdisciplinary Green Chemistry, Environmental Health and Science Policy Forum and new research-based organic chemistry laboratory modules that emphasize inquiry-based learning. These activities bridge the fields of green chemistry, policy and public health by engaging graduate and undergraduate students across these disciplines.The development of supported single-site heterogeneous catalysts (SSHCs) that can match the activity and selectivity of homogeneous analogs requires fundamental understanding of the interactions and potential synergies between supports and immobilized metal complexes. With funding from the Chemical Catalysis program, Dr. Voutchkova-Kostal is probing the structure-property-activity relationships that are needed to predictably design active, selective and long-lived SSHCs for challenging transfer hydrogenation reactions. Specifically, iridium and rhodium organometallic complexes are immobilized onto electronically-tunable layered double-hydroxide supports via sulfonate linkers. A complement of surface-sensitive and bulk spectroscopic techniques is used to probe the electronic effects that impact catalytic activity and stability. The insights developed are applied to optimizing the activity, selectivity and stability of a recyclable heterogeneous catalyst for transfer hydrogenation CO2 from glycerol, as well as recyclable catalysts for asymmetric transfer hydrogenation. To translate the broader impacts of this work and other developments in green chemistry to the university and greater DC communities, Dr. Voutchkova-Kostal is co-organizing an interdisciplinary Green Chemistry, Environmental Health and Science Policy Forum that facilitates dialogue on topical scientific issues across scientists and the public. To engage students in research she is also implementing new research-based organic chemistry laboratory modules that emphasize inquiry-based learning.