Effects of Metal Promoters on Olefin Alkylation Reactions Catalyzed by Sulfated Zirconia and Sulfated Titania

金属助剂对硫酸化氧化锆和硫酸化二氧化钛催化烯烃烷基化反应的影响

• 批准号: 9403199
• 负责人: Daniel Resasco
• 金额: $ 25.49万
• 依托单位: University of Oklahoma Norman Campus
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1994
• 资助国家: 美国
• 起止时间: 1994-06-15 至 1997-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9403199&HistoricalAwards=false
• 关键词: Effects; Metal; Promoters; Olefin; Alkylation

9403199 Resasco This is a study of the mechanisms of promotion occurring in olefin alkylation and methane coupling reactions when transition metals are added to sulfated zirconia catalysts. Promoters such as iron, manganese, platinum, and tin that can modify the initially high acidity of these materials are studied; acid catalyst site densities and strengths are measured. A series of weak bases is used to characterize acid-site distribution by temperature-programmed desorption. A variable temperature, diffuse-reflectance, Fourier-transform infrared spectrometer is used to monitor interactions of probe molecules with acid sites. These results are correlated with mass spectra of the evolved products to illuminate reaction mechanisms. The effect of hydrogen is also observed. The reactions being studied are being introduced to replace refinery operations that are no longer environmentally acceptable. When these systems are fully developed ( a ways off yet), they will permit natural gas to displace crude oil as the principal source of liquid fuels and petrochemical (including polymer) feedstocks. ***

本文研究了在硫化氧化锆催化剂中加入过渡金属对烯烃烷基化反应和甲烷偶联反应的促进机理。研究了铁、锰、铂和锡等促进剂来修饰这些材料最初的高酸度；测定了酸性催化剂的位点密度和强度。一系列弱碱通过程序升温解吸来表征酸位分布。可变温度，漫反射，傅里叶变换红外光谱仪用于监测探针分子与酸位点的相互作用。这些结果与演化产物的质谱相关联，阐明了反应机理。氢的作用也被观察到。正在研究的反应正在被引入，以取代对环境不再可接受的炼油厂操作。当这些系统完全开发出来（还有很长的路要走），它们将使天然气取代原油成为液体燃料和石化（包括聚合物）原料的主要来源。＊＊＊