Controlling Surface Carbene Chemistry by Altering Metal Electronic Properties

建议题目：通过改变金属电子性质控制表面卡宾化学建议编号：CTS-0086638主要研究人员：Julie d Itrii研究所：匹兹堡大学这个项目的目标是研究负载型金属粒子的催化作用，了解金属电子性质对控制卡宾偶联和加氢反应的影响。一个重要的元素是合成金属催化前驱体材料和清洁的卡宾来源。为了验证已经预测的关于电子性质的假设，将进行一些动力学和光谱测量。测定了氢解离、卡宾偶联和卡宾加氢的化学反应动力学。将合成重氮甲烷和二氟重氮并用来提供清洁的卡宾来源，以便可以直接探测基本步骤。概述的实验应该会导致对卡宾在各种过渡金属和合金催化剂上结合或氢化方式的更基本的理解。这项工作可能导致开发和理解有效去除氯和生产有用化学品的催化系统。

AbstractProposal Title: Controlling Surface Carbene Chemistry by Altering Metal Electronic PropertiesProposal Number: CTS-0086638Principal Investigator: Julie d'ItriInstitution: University of PittsburghThe goal of this project is to study supported metal particle catalysis and to understand the influence of metal electronic properties for control of carbene coupling and hydrogenation reactions. An important element is the synthesis of both metallic catalytic precursor materials and the clean carbene sources. To test hypotheses that have been predicted with respect to electronic properties, a number of kinetics and spectroscopic measurements will be carried out. The chemical reaction kinetics of hydrogen dissociation, carbene coupling, and carbene hydrogenation will be measured. Diazomethane and difluorodiazirine will be synthesized and used to provide a clean source of carbenes so that the elementary steps can be probed directly. The experiments outlined should lead to a greater fundamental understanding of the way in which carbenes combine or hydrogenate on various transition-metal and alloy catalysts. This work may lead to the development and understanding of catalytic systems that are effective for chlorine removal and for the production of useful chemicals.