Presidential Young Investigator Award: Advanced Catalytic Processes and Materials Fabrication Engineering

该总统青年研究员奖包括三个研究领域：1。超微孔材料的选择性控制。本文主要研究了无机氧化物修饰碳分子筛的设计、制造和应用。这些复合材料具有聚合物衍生碳的分子筛分性能和无机氧化物如二氧化硅、氧化铝、二氧化钛或氧化锆的高表面积和其他性能。最初的项目是准备一种催化剂系统，通过将催化费托合成和加氢裂化的场所整合到一个筛子包壳中，从合成气（一氧化碳和氢气）中生产汽油级碳氢化合物。将建立一个模型来描述该系统中的耦合传质和化学动力学。然后，模型和物理系统将被迭代地重新设计，以确定为此目的的最佳系统。2. 先进催化材料。多孔压电材料的制备正在研究中；它们既可作为催化剂，也可作为饱和烃活化的催化剂载体。同时，对氧化铝上铑钼表面活性位点的物理电子结构进行了研究；这种非常活跃的非均相催化剂似乎在化学上模仿均相铑催化剂。3. 电子材料加工。目前正在研究III族和V族有机金属类化合物的热解、光解和催化分解的动力学和机理；这些反应是CVD过程的核心。同时，通过氧化烷基锌前驱体来生产氧化锌膜的系统正在设计中；希望这将导致一种制造二维超导氧化物的方法。

This Presidential Young Investigator award includes three areas of research: 1. Selectivity control with ultramicroporous materials. This effort concentrates on the design, fabrication, and application of inorganic-oxide-modified carbon molecular sieves. These composite materials have the molecular sieving properties of polymer-derived carbon and the high surface areas and other properties of inorganic oxides such as silica, alumina, titania, or zirconia. The initial project is to prepare a catalyst system to produce gasoline-range hydrocarbons from syngas (carbon monoxide and hydrogen) by incorporating sites that catalyze Fischer-Tropsch synthesis and hydrocracking inside an envelope of sieve. A model will be developed to describe the coupled mass transfer and chemical kinetics in this system. The model and the physical system will then be redesigned iteratively to locate the optimal system for this purpose. 2. Advanced catalytic materials. The fabrication of porous piezoelectric materials is being studied; these may be useful both as catalysts and as catalyst supports for the activation of saturated hydrocarbons. Also, the physical and electronic structure of the active site on the surface of rhodium-molybdenum on alumina is under investigation; this very active heterogeneous catalyst appears to chemically mimic homogeneous rhodium catalysts. 3. Electronic materials processing. The kinetics and mechanisms for pyrolytic, photolytic, and catalytic decompositions of organometalloid compounds of groups III and V are being studied; such reactions are central to CVD processes. Also, a system is under design for production of zinc-oxide films by oxidation of alkylzinc precursors; it is hoped this will lead to a method for the fabrication of two-dimensional superconducting oxides.