Enthalpic characterization of activated carbons obtained from Mucuna Mutisiana with different burn-offs

被引：5
|
作者：
Vargas, J. E. [2 ]
Giraldo, L. [2 ]
Moreno-Pirajan, J. C. [1 ]
机构：
[1] Univ Los Andes, Fac Ciencias, Dept Quim, Grp Invest Solidos Porosos & Calorimetria, Bogota, Colombia
[2] Univ Nacl Colombia, Fac Ciencias, Dept Quim, Bogota, Colombia
来源：
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY | 2010年 / 102卷 / 03期
关键词：
Activated carbons; Immersion enthalpy; Surface area; Micropore volume; Chemical surface groups; IMMERSION CALORIMETRY; AQUEOUS-SOLUTIONS; MICROCALORIMETRY; STEAM; ADSORPTION;
D O I：
10.1007/s10973-010-0726-8
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
Immersion enthalpies of activated carbon samples obtained by activation with steam at temperatures between 600 and 900 A degrees C and activation times between 1 and 10 h were determined. The calorimetric liquids of immersion are CCl4, water, NaOH, and HCl 2 M solutions, and the values of the immersion enthalpies are related to other properties of the activated carbons such as the surface area B.E.T., the micropore volume, the content of acid, and basic surface groups. The highest values for the immersion enthalpies take place for the polar solvent CCl4 and for HCl solution, with values between 4.0 and 75.2 J g(-1) and 9.15 and 48.3 J g(-1), respectively.
引用
收藏
页码：1105 / 1109
页数：5
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