Model Studies of the Mechanism of Catalytic Oxidation by Monolayer Oxide Catalysts

摘要提案标题：单层氧化物催化剂催化氧化机理的模型研究项目编号：CTS-0000283主要研究员：Robert Madix机构：斯坦福大学本项目的目标是进一步从根本上了解混合金属氧化物的生长和化学活性，这是一种重要的催化材料。 模型单晶氧化物表面将被用作支持，并支持氧化物将被制造和研究使用一些表面科学工具。 特别是，氧化钒支持在二氧化钛和氧化铝单晶表面亚单层单层覆盖率将进行研究。 将使用化学气相沉积和在水溶液中浸渍来生长支撑的氧化钒。 用扫描隧道显微镜研究了负载型氧化物的生长形貌和结构。 电子结构将通过光电子和电子能量损失谱进行研究。 相关的表面反应性将通过程序升温方法和稳态反应技术进行检查。 甲醇氧化和丁烯还原将用作测试反应。大量的商业非均相催化剂是基于负载型氧化钒物种，并且这项工作具有指导氧化钒和其他负载型氧化物催化剂的制备和开发的潜力。

AbstractProposal Title: Model Studies of the Mechanism of Catalytic Oxidation by Monolayer Oxide CatalystsProposal Number: CTS-0000283Principal Investigator: Robert MadixInstitution: Stanford UniversityThe goal of this project is to further fundamental understanding of the growth and chemical activity of mixed metal oxides, which are important catalytic materials. Model single crystal oxide surfaces will be used as supports, and supported oxide will be fabricated and studied using a number of surface science tools. In particular, vanadia supported on titania and alumina single crystal surfaces at submonolayer to monolayer coverages will be studied. Supported vanadia will be grown using chemical vapor deposition and immersion in aqueous solution. The growth morphology and structure of the supported oxide will be studied by scanning tunneling microscopy. The electronic structure will be studied by photoelectron and electron energy loss spectroscopy. Related surface reactivity will be examined by both temperature programmed methods and by steady state reaction techniques. Methanol oxidation and butene reduction will be used as test reactions. A large number of commercial heterogeneous catalysts are based on supported vanadia species, and this work has the potential to guide the preparation and development of vanadia and other supported oxide catalysts.