کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9694047 | 1459638 | 2005 | 24 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Thermoporometry by differential scanning calorimetry: experimental considerations and applications
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
جریان سیال و فرایندهای انتقال
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Thermoporometry is a calorimetric method for characterizing pore structure from the melting or freezing point depression of a liquid confined in a pore, by reason of the added contribution of surface curvature to the phase-transition free energy. A summary of the theory behind the technique is provided, and a thorough evaluation of the technique using a laboratory DSC instrument is presented. Experimental protocols are described for the examination of mesoporous solids, specifically, controlled-pore glass standards. In addition to water, several organic liquids have been also used, including chlorobenzene, cyclohexane, and 1,4-dioxane. Pore radii as large as 1000Â nm may be quantitatively measured with appropriate experimental conditions. Methods for obtaining total pore volume, specific surface area, pore radius, and pore size distributions are discussed and compared to Hg intrusion results. The report concludes with applications of thermoporometry toward the characterization of inorganic particles, porous organic beads, and the pore structure in coated media.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Thermochimica Acta - Volume 433, Issues 1â2, 1 August 2005, Pages 27-50
Journal: Thermochimica Acta - Volume 433, Issues 1â2, 1 August 2005, Pages 27-50
نویسندگان
Michael R. Landry,