Optimization on production technology of nano silica

YIN Xiangbin; OU Encai; XU Weijian

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Optimization on production technology of nano silica

YIN Xiangbin #,OU Encai,XU Weijian *

School of Chemistry and Chemical Engineering, Hunan University;School of Chemistry and Chemical Engineering, Hunan University;School of chemistry and chemical engineering，Hunan University

*Correspondence author

#Submitted by

Subject:

Funding: none

Opened online:31 May 2017

Accepted by: none

Citation: YIN Xiangbin,OU Encai,XU Weijian.Optimization on production technology of nano silica[OL]. [31 May 2017] http://en.paper.edu.cn/en_releasepaper/content/4735955

In this paper, chemical precipitation was used to produce nano silica in the presence of polyvinylpyrrolidone (PVP) and cetyltrimethyl ammonium bromide (CTAB) as composite dispersant. The structure and property of samples were characterized by IR, XRD, SEM and BET. The results indicates that the product with small particle size ,large specific surface area and high oil adsorption value can be prepared under these conditions: concentration of acidic water glass: 7.5 Be′; temperature: 60-70 °C; pH value: 8; the amount of dispersant: 1.6% 5 Be′ water glass..

Keywords:chemical precipitation; nano silica; composite dispersant; process parameters

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