GOALI: Fundamental Studies of Selective NO reduction and Decompostion by gold and Silver Based Catalysts

摘要提案题目：目标：金银基催化剂选择性还原和分解NO的基础研究提案号：cts -9812112首席研究员：Erdogan Gulari机构：密歇根大学密歇根大学教授Erdogan Gulari提出开发一种新的氧化铝负载的金银类型用于选择性还原或分解NO。这种催化剂将有助于消除汽油或柴油稀燃废气中的NO污染物。已经开发的溶胶-凝胶合成已被证明可以产生对氮具有高度选择性的催化剂。在本工作中，将确定高选择性的原因，为新一代NO减排催化剂的开发提供基础。通过瞬态实验和同位素开关实验研究NO还原和分解的机理。催化剂的结构将通过电子显微镜、x射线光电子和拉曼光谱以及x射线衍射来确定。确定的参数将包括：金属支撑相互作用的性质和程度；金属晶粒尺寸分布；反应条件下金属的氧化态；溶胶-凝胶制备变量；表面物种;催化表面在反应过程中发生了变化。这个目标计划涉及到与福特汽车公司的罗伯特·哈默勒的合作。

ABSTRACTProposal Title: GOALI: Fundamental Studies of Selective NO Reduction and Decomposition by Gold- and Silver-Based CatalystsProposal Number: CTS-9812112Principal Investigator: Erdogan GulariInstitution: University of MichiganProfessor Erdogan Gulari of U. Michigan proposes to develop new alumina-supported gold and silver type for selective NO reduction or decomposition. Such catalysts will be useful for the NO pollutant elimination from exhaust gases obtained from the lean combustion of gasoline or diesel. The sol-gel synthesis already developed has been shown to produce catalysts that are highly selective to nitrogen. In the present work, the causes for the high selectivity will be determined, in order to provide the foundation for the development of new generation NO abatement catalysts. The mechanism of NO reduction and decomposition will be studied by transient and isotopic switching experiments. The catalyst structure will be determined by electron microscopy, x-ray photoelectron and Raman spectroscopies, and x-ray diffraction. Parameters identified will include: nature and extent of metal support interaction; metal crystallite size distribution; metal oxidation state under reaction conditions; sol-gel preparation variables; surface species; and catalytic surface changes during reaction. This GOALI proposal involves a collaboration with Robert Hammerle, of Ford Motor Company.