کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
9782954 1511866 2005 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Influence of polyvinyl alcohol on the synthesis of silica-pillared clay
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد مواد الکترونیکی، نوری و مغناطیسی
پیش نمایش صفحه اول مقاله
Influence of polyvinyl alcohol on the synthesis of silica-pillared clay
چکیده انگلیسی
Silica-pillared clays with mesopore were prepared from montmorillonite, aminopropyltriethoxysilane (APS) and tetraethoxysilane (TEOS) with polyvinyl alcohol (PVA). The concentration of PVA was important in this synthesis and effective on the porosity of the obtained silica-pillared clays. The pore properties and structures of the pillared clays were investigated. Based on X-ray diffraction measurements, the basal spacings of the silica-pillared clays increased from 3.5 to 5.3 nm with the increase PVA concentration. As with the basal spacings, the peaks of the pore size distribution and the average pore diameter shifted up to approximately 4 nm. As the concentration of PVA increased, the mesopore areas and pore volumes tended to increase, and the BET surface areas trended to decrease.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Chemistry and Physics - Volume 94, Issues 2–3, 15 December 2005, Pages 360-364
نویسندگان
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