Adsorption and Diffusion in Single and Multicomponent Adsorbates in Highly Silicious Zeolites

高硅沸石中单组分和多组分吸附物的吸附和扩散

• 批准号: 8715460
• 负责人: Yi Ma
• 金额: $ 9.61万
• 依托单位: Worcester Polytechnic Institute
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1987
• 资助国家: 美国
• 起止时间: 1987-09-01 至 1990-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8715460&HistoricalAwards=false
• 关键词: Adsorption; Diffusion; Single; Multicomponent; Adsorbates

The diffusive and adsorptive properties of water vapor and organic compounds on highly silicious zeolites will be determined by a gravimetric technique and a well-stirred reactor. The primary objective is to obtain adsorption and diffusion data as a function of Si/Al ratios for both single component and multicomponent systems to gain fundamental understanding of adsorption and diffusion in zeolites. Furthermore, competitive adsorption from gaseous mixtures will be investigated with water vapor as an important variable. The current gravimetric system is unique in that the system pressure, the sample temperature and the sample weight change can be monitored simultaneously during the entire sorption process. This unique feature allows one to examine the temperature effect on sorption. More important is the fact that this feature makes it possible to differentiate the thermal effects from other factors by keeping the temperature rise at a minimum. Also unique to the well-stirred system is the capability to investigate the displacement phenomena resulting from competitive adsorption which is important in practical adsorption applications.

水蒸气的扩散和吸附特性， 高硅沸石上的有机化合物将 通过重量分析技术和充分搅拌的 反应器 主要目的是获得吸附和 扩散数据作为Si/Al比的函数， 组分和多组分体系， 了解沸石的吸附和扩散。 此外，来自气体混合物的竞争吸附将 以水蒸气为重要变量进行研究。 目前的重力系统是独特的，因为该系统 压力、样品温度和样品重量的变化 可以在整个吸附过程中同时监测 过程 这一独特的功能使人们能够检查 温度对吸附的影响。 更为重要的是 该功能使得区分 通过保持温度， 最低限度上涨。 搅拌良好的系统的另一个独特之处是 研究位移现象的能力 这是由于竞争性吸附， 实际吸附应用。