氧分子筛孔容、比表面的测定  

Study of Method for the Determination of Specific Pore Volume and Specific Surface Area of Oxy-Molecular Sieves

作　　者：夏丕通 

机构地区：[1]化工部西南化工研究院,四川纳溪646300

出　　处：《石油化工》1993年第11期754-756,共3页Petrochemical Technology

摘　　要：阐明传统的低温氮吸附方法不适用于氧分子筛孔容,比表面的测定;提出了分子级孔的概念;建立了液氮温度下,用氢吸附量来测定0.43nm以下小孔物质比表面,孔容的方法,认为氢吸附方法是可行的。This paper indicates that the conventional low-temperature nitrogen adsorption method does not apply to the determination of specific pore volume and specific surface area of oxy-molecular sieves. A concept of molecular-level pore is proposed, and a method using hydrogen adsorption capacity at liquid nitrogen temperature is established for the determination of specific surface area and specific pore volume of fine pore materials with pore diameters below 0.43nm. The study shows that hydrogen adsorption method is feasible.

关 键 词：分子筛 氧分子筛 孔容 比表面 测定 

分 类 号：TQ424.25[化学工程]