کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
76707 49146 2008 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Spherical porous framework of calcium carbonate prepared in the presence of precursor PS–PAA as template
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی کاتالیزور
پیش نمایش صفحه اول مقاله
Spherical porous framework of calcium carbonate prepared in the presence of precursor PS–PAA as template
چکیده انگلیسی

Spherical calcium carbonate composite of 5–6 μm in diameter was firstly prepared using the PS–PAA (polymer of polystyrene and poly(acrylic acid)) as template. Porous calcium carbonate spheres with calcite structure were then obtained by a slow heating rate of 1 °C min−1 calcination process in air. The morphology and structure of the as-prepared products were characterized by scanning electron microscope (SEM), X-ray diffraction (XRD) and Thermo-Gravimetric/Differential Thermal (TG–DTA) methods. Nitrogen sorption measurements revealed that the obtained products exhibited high BET surface area of 42.88 m2 g−1 and average pore size of 20.10 nm. For comparison, a common heating rate of 10 °C min−1 calcination process was carried out. Only CaCO3 grains with high dispersion existed.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Microporous and Mesoporous Materials - Volume 113, Issues 1–3, 1 August 2008, Pages 538–541
نویسندگان
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