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真密度(True Density )的测量方法
添加时间:2017-8-20 来源:本站整理
真密度 (True Density )指材料在绝对密实的状态下单位体积的固体物质的实际质量,即去除内部孔隙或者颗粒间的空隙后的密度(叫真密度)。与之相对应的物理性质还有表观密度和堆积密度。
多孔固体颗粒扣除了内部孔隙后的密度。
对催化剂又称骨架密度。若催化剂质量为m,催化剂骨架体积为V骨,真密度ρ真=m/V骨。它是单位体积催化剂骨架或固体部分(不包括颗粒之间间隙及颗粒内微孔体积)的质量。可以用异丙醇或气体置换法,在真空容量法吸附装置中测定。

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