Engineering Research Equipment: Adsorption porosimeter for ceramic membrane studies

工程研究设备：用于陶瓷膜研究的吸附孔隙率计

• 批准号: 9212272
• 负责人: Jerry Lin
• 金额: $ 3.36万
• 依托单位: University of Cincinnati Main Campus
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1992
• 资助国家: 美国
• 起止时间: 1992-08-15 至 1993-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9212272&HistoricalAwards=false
• 关键词: Engineering; Research; Equipment; Adsorption; porosimeter

The PI proposes to purchase a ASAP 2000 MicroPore sorptometer (an adsorption porosimeter) from Micromeritics. The instrument measures the surface area, pore volume, and micropore (20 A) and mesopore (20-500 A) size distribution of a porous solid sample based on the physical adsorption of N2. A volumetric method is used to measure the adsorption and desorption isotherms over a large pressure range, and from these the pore characteristics of the material can be calculated. The PI will use this instrument in his research on the sol-gel preparation of ceramic membranes. In particular this instrument will allow for (1) the elucidation of the effects of sintering temperature and hostile processing environment on the pore structure al alumina, zirconia and titantia membranes, (2) examination of pore structures of hydrothermally stable separation membranes made of silica- alumina or silica magnesia binary systems and (3) establishing pore structures in alumina, zirconia and titania membranes doped with materials to improve their thermal stability. The advanced ceramic membranes that the PI is researching have many potential applications, especially in the gas separations area, and the porosimeter is essential for characterizing these membranes.

PI 建议从 Micromeritics 购买 ASAP 2000 MicroPore 吸附计（吸附孔隙率计）。 该仪器基于 N2 的物理吸附来测量多孔固体样品的表面积、孔体积以及微孔 (20 A) 和中孔 (20-500 A) 尺寸分布。 体积法用于测量大压力范围内的吸附和解吸等温线，并由此可以计算出材料的孔隙特征。 PI将在他的陶瓷膜溶胶-凝胶制备研究中使用该仪器。 特别是，该仪器将允许（1）阐明烧结温度和恶劣加工环境对氧化铝、氧化锆和二氧化钛膜的孔结构的影响，（2）检查由二氧化硅-氧化铝或二氧化硅氧化镁二元系统制成的水热稳定分离膜的孔结构，以及（3）建立氧化铝、氧化锆和二氧化钛膜中的孔结构 掺杂材料以提高其热稳定性。 PI 正在研究的先进陶瓷膜具有许多潜在的应用，特别是在气体分离领域，而孔隙度计对于表征这些膜至关重要。