Reaction kinetics for preparation of silica film with St?ber method

Shang Mengying; Jiang Xiaodong; Liu Miao; Luo Xuan; Tang Yongjian; Cao Linhong

Volume 25 Issue 04

Mar. 2013

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Article Navigation > High Power Laser and Particle Beams > 2013 > 25(04): 898-902

lai zhi, zeng xiaodong, feng zhejun, et al. Measurement of elongation of piezoelectric transducer driven by fast alternative electric field[J]. High Power Laser and Particle Beams, 2011, 23.

Citation:

Shang Mengying, Jiang Xiaodong, Liu Miao, et al. Reaction kinetics for preparation of silica film with St?ber method[J]. High Power Laser and Particle Beams, 2013, 25: 898-902.

lai zhi, zeng xiaodong, feng zhejun, et al. Measurement of elongation of piezoelectric transducer driven by fast alternative electric field[J]. High Power Laser and Particle Beams, 2011, 23.

Citation:

Shang Mengying, Jiang Xiaodong, Liu Miao, et al. Reaction kinetics for preparation of silica film with St?ber method[J]. High Power Laser and Particle Beams, 2013, 25: 898-902.

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Reaction kinetics for preparation of silica film with St?ber method

1.
State Key Laboratory Cultivation Base for Nonmetal Composites and Functional Materials,Southwest University of Science and Technology,Mianyang 621010,China;
2.
Laboratory for Extreme Conditions Matter Properties,Southwest University of Science and Technology,Mianyang 621010,China;
3.
Research Center of Laser Fusion,CAEP,P.O.Box 919-987,Mianyang 621900,China

Received Date: 2012-06-01
Rev Recd Date: 2012-11-13
Publish Date: 2013-03-09

Abstract

Abstract

A new formula was proposed to investigate the relationship between reaction time and tetraethylorthosilicate (TEOS) conversion rate for preparation of silica sol with Stber method, by studying the reaction kinetics of TEOS hydrolytic process. An appropriate conversion rate was then determined and used to calculate the theoretical optimal reaction time. Meanwhile, silica sols were prepared by sol-gel process using TEOS as precursor and ammonia as catalyst. It was found that the reaction time decreases with an increasing amount of ammonia and water. The values of experimental optimal reaction time were obtained, and agree with the theoretical results (the errors are within 5%), which shows good applicability of our formula.
- sol-gel,
- reaction kinetics,
- monodisperse silica,
- conversion rate,
- reaction time

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