Title of article
Synthesis and Characterization of Hydrophobic Silica Aerogel by Two Step(Acid-Base) Sol-Gel Process
Author/Authors
Tadjarodi، A. نويسنده Departments of Chemistry, Iran University of Science and Technology, Tehran, Iran , , Haghverdi، M. نويسنده Department of Chemistry, Faculty of Science, Imam Khomeini International University, Qazvin, Iran , , Mohammad، V. نويسنده Department of Chemistry, Faculty of Science, Imam Khomeini International University, Qazvin, Iran , , Rajabi، M. نويسنده Department of Mechanical Engineering, Babol Noshirvani University of Technology, Shariati Street, Babol, Iran. ,
Issue Information
فصلنامه با شماره پیاپی 0 سال 2013
Pages
9
From page
181
To page
189
Abstract
در اين مقاله آيروژل سيليكاي آب گريز با روش پليمريزاسيون سل-ژل اسيد-باز و با استفاده از تترا اتيل اورتوسيليكات به عنوان پيش ماده سنتز شد. محصول تهيه شده بوسيله ي طيف سنجي مادون قرمز (FT-IR)، آناليز گرماسنجي آناليز ديفرانسيلي گرماسنجي (TG/DTA) ، پراش اشعه X (XRD) ، BET و ميكروسكوپ الكتروني روبشي (SEM) مورد آناليز قرار گرفت. چگالي محصول g /cm3 0.027 و مساحت سطح ويژه ي آن درحدودm2/g 655.58 و حجم حفره cm3/g0.4831 محاسبه شد.
Abstract
The silica aerogel was prepared by the acid–base sol–gel
polymerization of tetraethylorthosilicate precursor followed by
ambient pressure drying. The prepared silica aerogels were
characterized by Fourier transform infrared (FT-IR), Thermo-
gravimetric and differential thermal analysis (TG/DTA), X-ray
diffractometer (XRD), Energy dispersive X-ray microanalysis (EDX),
Brunauer–Emmitt–Teller (BET) and Scanning electron microscopy
(SEM). The result silica aerogel is a light and crack-free solid with
very low bulk density 0.027 g /cm3
, high specific surface area 655.58
m2
/ g and large pore volume 0.4831 cm3
/ g. The average size of
particles was calculated using a Microstructure Measurement program
and Minitab statistical software.
Journal title
Journal of NanoStructures
Serial Year
2013
Journal title
Journal of NanoStructures
Record number
1984120
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