分子筛是一种具有均匀微孔、高效选择吸附性的硅铝酸盐。5A分子筛是其中的一种。它结构简单,制造较易,应用广泛。目前,国内主要用于石油脱蜡和气液物质的干燥。 目前对5A分子筛的质量评价仅以吸附正已烷量(或正庚烷量)和机械强度为依据 Molecular sieve is a kind of aluminosilicate with uniform micropore, efficient selective adsorption. 5A molecular sieve is one of them. It is simple in structure, easy to manufacture and widely used. At present, China is mainly used for oil dewaxing and gas-liquid drying. At present, the quality evaluation of 5A molecular sieve is only based on the amount of n-hexane adsorbed (or the amount of n-heptane) and the mechanical strength