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

强酸固体和液体催化剂催化反应的酸度和机理

• 批准号: 9812704
• 负责人: Dan Farcasiu
• 金额: $ 9万
• 依托单位: University of Pittsburgh
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1999
• 资助国家: 美国
• 起止时间: 1999-09-01 至 2000-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9812704&HistoricalAwards=false
• 关键词: Acidity; Mechanism; Reactions; Catalyzed; Strong

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.

匹兹堡大学教授Dan Farcasiu将继续研究酸催化剂的催化性能和表征，特别是固体Lewis酸。在以前的研究中，他开发了一种用于实际测定固体酸度(特别是Broensted类型)的13C核磁共振方法(单参数法)，并研究了具有基础和工业意义的有机反应的机理。本赠款的第一个目标是开发一种新的方法来研究固体和液体酸的性质，特别是刘易斯类型的酸，利用酸络合醚的13C核磁共振。第二个目标是评估广泛温度范围内固体酸的Broensted酸度，以确定这类中心在碳氢化合物异构化和裂解机理中的作用。第三个目标是研究饱和碳氢化合物在沸石、杂多酸和硫酸氧化锆上的低温异构化和裂化机理，并与弱超强酸三氟甲基磺酸进行比较。这笔助学金将用于支持研究生的培训。