GOALI: Preparation, Characterization and Kinetic Behavior of Unique Carbon Supported Bimetallic Cu Catalysts for the Selective Dehydrogenation of Alcohols and Diols

M教授宾夕法尼亚州立大学的Albert Vannice与东北大学的Baker教授以及孟山都公司的Friedman和Ebner博士合作，将研究碳上负载的Cu-（Pt，Pd，Rh）颗粒的制备和表征（以活性，石墨纤维和金刚石形式）。 他们将确定醇类气相和液相脱氢为烯烃的动力学和催化机制，这些反应与孟山都公司使用的工业工艺有关。 这项研究的一个广泛动机是潜在的替代环境有害的亚铬酸铜催化剂在这些过程中使用。 开发高选择性、无废物的工艺对环境也很重要。 在基础层面上，有突出的需要，更好地了解纳米粒子的性质。 特别是对于醇脱氢，负载在各种类型的碳基底上的纳米颗粒的组成、结构、固相、形态、电子状态和分散的催化性能依赖性知之甚少或知之甚少。 汽相和液相催化行为的差异尚未研究。 贝克博士和瓦尼斯博士将准备新的催化剂。 Vannice博士将通过XRD、IR、TEM和化学吸附来表征颗粒尺寸和表面功能成分，而Baker博士将通过可控气氛电子显微镜和TEM来提供纳米颗粒的形态和化学状态。 Drs. Jumman Ebner将通过XPS和EXAFS提供额外的化学成分和结构信息。Vannice博士将为正丁醇、3-甲基丁醇、巴豆醇和异丙醇的气相脱氢提供催化动力学测量，而孟山都将为液相反应进行类似的测定。

Professor M. Albert Vannice at Penn Sate University, in collaboration with Prof. Baker at Northeastern University, and Drs. Friedman and Ebner at Monsanto Corporation, will study the preparation and characterization of bimetallic Cu- (Pt, Pd, Rh) particles supported on carbon (in the activated, graphitic fiber, and diamond forms). They will determine the kinetics and catalytic mechanisms of vapor-phase and liquid-phase dehydrogenation of alcohols to alkenes, reactions that are relevant to industrial processes utilized by Monsanto. A broad motivation for the research is the potential replacement of environmentally hazardous copper chromite catalysts used in those processes. Also environmentally important is the development of highly selective, wasteless processes. At the fundamental level there is outstanding need for better understanding of bimetallic nanoparticles properties. In particular for alcohol dehydrogenation, the catalytic property dependence on composition, structure, solid phases, morphology, electronic state, and dispersion of bimetallic nanoparticles supported on various types carbon substrates is poorly known or little understood. Differences of behavior for vapor and liquid phase catalysis have not been investigated. Drs. Baker and Vannice will prepare the novel catalysts. Dr. Vannice will characterize particle size and surface-functional composition by XRD, IR, TEM and chemisorption while Dr. Baker will provide morphology and chemical state of the bimetallic particles by Controlled Atmosphere Electron Microscopy and TEM. Drs. Friendman Ebner will provide additional chemical composition and structural information by XPS and EXAFS. Dr. Vannice will provide catalytic kinetics measurements for the vapor-phase dehydrogenation of n-butanol, 3-methylbutanol, crotyl alcohol and isopropanol, while Monsanto will do similar determinations for the liquid-phase reactions.