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Proceedings of the 7th National Conference on Functional Materials and Applications (FMA 2010 E-BOOK)

Changsha,China,10.16-10.18,2010

ISBN: 978-1-935068-41-9 Scientific Research Publishing, USA

E-Book 2313pp Pub. Date: October 2010

Category: Chemistry & Materials Science

Price: $360

Title: Preparation and Characterization of Hydrophobic Mesoporous SiO2 Aeroge at Low Cost
Source: Proceedings of the 7th National Conference on Functional Materials and Applications (FMA 2010 E-BOOK) (pp 20-22)
Author(s): Jian Mao, Department of Petro-chemistry and Management, Logistical Engineering Institute, Chongqing, China
Li-tao Zhao, Department of Petro-chemistry and Management, Logistical Engineering Institute, Chongqing, China
Peng Cheng, Department of Petro-chemistry and Management, Logistical Engineering Institute, Chongqing, China
Hua-feng Li, Department of Petro-chemistry and Management, Logistical Engineering Institute, Chongqing, China
Guo-xu Chen, Department of Petro-chemistry and Management, Logistical Engineering Institute, Chongqing, China
Abstract: silica gel was prepared by acid-base two step catalysis using cheap industrial tetraethyl orthosilicate (TEOS) as precursor, the obtained silica gel was directly modified by using trimethylchlorosilane hexa methyl disiloxane (TMCS/HMDSO) mixed solution , the obtained modified gel was then dried at ambient atmosphere to prepare hydrophobic SiO2 aerogel with a high specific surface area. The chemical compisites, hydrophobic property of the modified silica aerogel had been studied by the IR, N2 phycial absorbtion and the determination of contact angle. The results showed that the modified samples had a good hydrophobic property because of the hydrophilic group (-CH3) that was linked to the aerogel’s surface. The specific surface area of the sample with high thermal stability was up to 931 m2/g.
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