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Citation: SHI Lei, JI Guijuan, MIAO Lina, GAO Guimei, GAN Shucai, LI Xiaojun. Preparation of Silica Nanoparticles Using Sodium Silicate Extracted from Oil Shale Ash as Precursor[J]. Chinese Journal of Applied Chemistry, ;2011, 28(10): 1195-1201. doi: 10.3724/SP.J.1095.2011.00683 shu

Preparation of Silica Nanoparticles Using Sodium Silicate Extracted from Oil Shale Ash as Precursor

SHI Lei ^b ,
JI Guijuan ^a,, ,
MIAO Lina ^a ,
GAO Guimei ^a ,
GAN Shucai ^a ,
LI Xiaojun ^b

1.
a College of Chemistry, Jilin University, Changchun 130026;
2.
b Daqing Oilfield Company Limited, Daqing

Corresponding author: JI Guijuan,
Received Date: 17 November 2010
Available Online: 23 March 2011
Fund Project: 国家重大科技专项课题资助(2008ZX05018-005) (2008ZX05018-005)

Spherical silica nanoparticles with average particle size of 10 nm were synthesized using sodium silicate extracted from oil shale ash as silica source.The results showed that the addition of poly(ethylene glycol)(PEG) could effectively prevent the aggregation of silica nanoparticles and tune the particle size,the optimal PEG concentration was found to be 3.0%.Ultrasonication is a key factor to the formation of small,uniform nanoparticles and an optimized hydrolysis-condensation period for ultrasonication is 0.5 h.The azeotropic distillation evidently suppresses agglomeration and a possible mechanism of azeotropic distillation was also proposed.
- oil shale ash,
- nanoparticles silica,
- ultrasonic,
- azeotropic distillation
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