Volumetric determination of adsorption of helium over some zeolites with a temperature‐compensated, differential tensimeter having symmetrical design
Volumetric determination of adsorption of helium over some zeolites with a temperature‐compensated, differential tensimeter having symmetrical design
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使用具有对称设计的温度补偿差示张力计对氦在某些沸石上的吸附进行容量测定
DOI：
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发表时间：
1987
期刊：
影响因子：
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通讯作者：
S. Oki
中科院分区：
文献类型：
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作者：
I. Suzuki;K. Kakimoto;S. Oki
用具有对称设计的温度补偿差示张力仪测定了77~673K温度范围内氦在沸石上的吸附量。氦的吸附量是通过测量包含样品的样品吸附池和包含几个玻璃棒的参比吸附池之间的表观死区的增加来确定的，该假设是在673K时氦的吸附量可以忽略不计，每次测定后吸附池的温度都是变化的。讨论了用氦作为膨胀流体测定固体密度时，氦的吸附对测定固体密度的误差，以及用常规体积吸附装置测定固体比表面积时对氮的吸附。
Amounts of adsorption of helium over some zeolites were determined ranging from 77 to 673 K with a temperature‐compensated, differential tensimeter having symmetrical design. The amount of adsorption of helium was determined by measuring an increase in apparent dead space between the sample adsorption cell containing the sample and the reference adsorption cell containing several glass rods on the assumption that the amount adsorbed of helium at 673 K was negligibly small, the temperature of the adsorption cells being changed after each determination. Discussion has been made of the errors caused by the adsorption of helium to the determination of the density of solids when helium is used as the dilatometric fluid, and the determination of the surface areas of solids based upon the adsorption of nitrogen with a conventional volumetric adsorption apparatus.