کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
610361 880647 2009 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Characterization and structural investigation of fractal porous-silica over an extremely wide scale range of pore size
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی شیمی کلوئیدی و سطحی
پیش نمایش صفحه اول مقاله
Characterization and structural investigation of fractal porous-silica over an extremely wide scale range of pore size
چکیده انگلیسی

We have succeeded in creating Menger sponge-like fractal body, i.e., porous-silica samples with Menger sponge-like fractal geometries, by a novel template method utilizing template particles of alkylketene dimer (AKD) and a sol-gel synthesis of tetramethyl orthosilicate (TMOS). We report here the first experimental results on characterization and structural investigations of the fractal porous-silica samples prepared with various conditions such as calcination temperature and packing condition of the template particles. In order to characterize the fractal porous-silica samples, pore volume distribution, porosity and specific surface area were measured over an extremely wide scale from 1 nm to 100 μm by means of mercury porosimetry, 1H NMR cryoporometry, nitrogen gas adsorption experiments together with direct evaluations of cross-sectional fractal dimension Dcs, and size limits of Dcs. We have found that the pore volume distribution and specific surface area of the fractal porous-silica samples can be discussed in terms of different fractal porous structures at different scale regions.

Hierarchical porous structures of fractal porous-silica samples over an extremely wide scale range studied by mercury porosimetry,11H NMR cryoporometry and nitrogen gas adsorption experiments.Figure optionsDownload as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Colloid and Interface Science - Volume 336, Issue 1, 1 August 2009, Pages 215–225
نویسندگان
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