کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
612791 | 880707 | 2006 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Influence of kinetics on the determination of the surface reactivity of oxide suspensions by acid–base titration
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
شیمی کلوئیدی و سطحی
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چکیده انگلیسی
The effect of acid–base titration protocol and speed on pH measurement and surface charge calculation was studied on suspensions of γ-alumina, hematite, goethite, and silica, whose size and porosity have been well characterized. The titration protocol has an important effect on surface charge calculation as well as on acid–base constants obtained by fitting of the titration curves. Variations of pH versus time after addition of acid or base to the suspension were interpreted as diffusion processes. Resulting apparent diffusion coefficients depend on the nature of the oxide and on its porosity.
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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Colloid and Interface Science - Volume 303, Issue 1, 1 November 2006, Pages 49–55
Journal: Journal of Colloid and Interface Science - Volume 303, Issue 1, 1 November 2006, Pages 49–55
نویسندگان
M. Duc, F. Adekola, G. Lefèvre, M. Fédoroff,