Acidity and Mechanism in Reactions Catalyzed By Strong Acid Catalyst, Solid and Liquid

Dan Farcasiu教授将继续研究酸催化剂的催化性能和表征，特别是固体路易斯酸。在之前的研究中，他开发了一种13C核磁共振方法（单参数法），用于实际测定固体酸度（特别是Broensted类型），并研究了具有基础和工业重要性的有机反应的机理。本基金的第一个目标是开发一种新方法，利用酸络合醚的13C核磁共振来研究固体和液体酸的性质，特别是刘易斯类型的酸。第二个目标是在广泛的温度范围内评价固体酸的布朗氏酸度，以确定这类位点在烃类异构化和裂解机制中的作用。第三个目标是研究饱和烃在沸石、杂多酸和硫酸氧化锆上低温异构化和裂解的机理，并与弱超强酸三氟甲基磺酸进行比较。这笔补助金将用于培养研究生。

AbstractCTS-9812704Dan Farcasiu/University of PittsburghProfessor Dan Farcasiu will continue investigation of the catalytic properties and characterization of acid catalysts, particularly solid Lewis acids. In previous research, he has developed a 13C NMR methods (the one-parameter method) for the practical determination of solid acidity (especially of the Broensted type) and he has studied the mechanism of organic reactions of fundamental and industrial importance. The first goal of the present grant is the development of a new method to investigate the properties of solid and liquid acids, particularly of the Lewis type, utilizing 13C NMR of acid-complexed ethers. The second goal is the evaluation of Broensted acidity of solid acids over a wide range of temperature to identify the role of that type of sites in the mechanism of isomerization and cracking of hydrocarbons. The third goal is to study the mechanisms of low-temperature isomerization and cracking of saturated hydrocarbons over zeolites, heteropolyacids, and sulfated zirconia, in comparison with trifluioremethysulfonic acid, a weak superacid. The grant will support the training of graduate students.