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Citation: Gao Lan, Yan Hai-Ke. Measurement of Surface Area of Solid With Microadsorption Flow Calorimetry[J]. Acta Physico-Chimica Sinica, ;1992, 8(04): 563-566. doi: 10.3866/PKU.WHXB19920428 shu

Measurement of Surface Area of Solid With Microadsorption Flow Calorimetry

Gao Lan ,
Yan Hai-Ke

1.
Institute of Chemistry, Academia Sinica, Beijing 100080

Received Date: 13 February 1991
Available Online: 15 August 1992

Specific surface area of solid is an important physico-chemical parameter. This kind of information is frequently required in describing the interactions between liquid and solid or gas and solid. In this paper, two equations which can be used to calculate the surface area of solid powder directly from the adsorptions enthalpy of liquid on solid are derived from the liquid solid surface state equations. Surface areas of eight metallic oxides have been calculated from the adsorption enthalpies measured by means of LKB-2107 Microadsorption Flow Calorimeter. For comparision, these surface areas have also been measured by using traditonal BET (N_2 adsorption) method. The results obtained by using these two methods agree quite well.
- Solid powder; Surface area; Calorimetry; Adsorption enthalpy
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