Synthesis of spherical silica particles by sol-gel method and application

2008 ◽  
Vol 19 (8) ◽  
pp. 977-983 ◽  
Author(s):  
Kiyomi Fuchigami ◽  
Yoshinari Taguchi ◽  
Masato Tanaka
Keyword(s):  
Sol Gel ◽  
Silica Particles ◽  
Gel Method ◽  
Sol Gel Method ◽  
Spherical Silica ◽  
Spherical Silica Particles

Performance of Polishing Slurries containing Silica Particles grown by Sol-Gel Method

2000 ◽  
Vol 613 ◽  
Author(s):  
Sun Hyuk Bae ◽  
Jae-Hyun So ◽  
Seung-Man Yang ◽  
Do Hyun Kim
Keyword(s):  
Fumed Silica ◽  
Sol Gel ◽  
Particle Growth ◽  
Silica Particles ◽  
Gel Method ◽  
Sol Gel Method ◽  
Irregular Shapes ◽  
Wafer Polishing ◽  
Transmission Electron ◽  
Silica Slurry

ABSTRACTSilica slurry used as abrasives in wafer polishing process is made by dispersing silica particles in an alkali solution. Since commercially available colloidal or fumed silica particles need some modifications to be directly used as abrasive slurry due to their small sizes, irregular shapes or broad size distribution, we have prepared silica abrasives by particle growth of fumed silica or colloidal silica as seeds by sol-gel method. Silica slurries prepared by this step-wise growth from commercial seeds were tested using one-armed polisher for the comparison with commercial slurries and showed the performance comparable to commercial slurries. Microstructures of polishing slurries were investigated using transmission electron microscopy and ARES rheometer. From the result, stability of the slurry was found to be more important than the primary particle sizes for the polishing performance.

scholarly journals Synthesis of Spherical Silica by Sol-Gel Method and Its Application as Catalyst Support

2011 ◽  
Vol 10 (2) ◽  
pp. 25
Author(s):  
Anirut Leksomboon ◽  
Bunjerd Jongsomjit
Keyword(s):  
Particle Size ◽  
Ethylene Glycol ◽  
Specific Surface ◽  
Surface Area ◽  
Specific Surface Area ◽  
Sol Gel ◽  
Weight Ratio ◽  
Gel Method ◽  
Sol Gel Method ◽  
Spherical Silica

In this present study, the spherical silica support was synthesized from tetraethyloxysilane (TEOS), water, sodium hydroxide, ethylene glycol and n-dodecyltrimethyl ammonium bromide (C12TMABr). The particle size was controlled by variation of the ethylene glycol co-solvent weight ratio of a sol-gel method preparation in the range of 0.10 to 0.50. In addition, the particle size apparently increases with high weight ratio of co-solvent, but the particle size distribution was broader. The standard deviation of particle diameter is large when the co-solvent weight ratio is more than 0.35 and less than 0.15. However, the specific surface area was similar for all weight ratios ranging from 1000 to 1300 m2/g. The synthesized silica was spherical and has high specific surface area. The cobalt was impregnated onto the obtained silica to produce the cobalt catalyst used for CO2 hydrogenation.</

The Influence of Water Content on the Growth of the Hybrid-Silica Particles by Sol-Gel Method

Silicon ◽  
2020 ◽  
Author(s):  
Xijia Zhao ◽  
Yihan Wang ◽  
Jianhui Luo ◽  
Pingmei Wang ◽  
Peiwen Xiao ◽  
...  
Keyword(s):  
Water Content ◽  
Sol Gel ◽  
Silica Particles ◽  
Gel Method ◽  
Sol Gel Method ◽  
Hybrid Silica ◽  
Influence Of Water

Preparation and Performance of Porous Membrane Materials Using the Sol-Gel Method

2010 ◽  
Vol 33 ◽  
pp. 251-253
Author(s):  
Peng Zhang ◽  
Gang Chen ◽  
Bin Guo ◽  
Shu Kang Cheng
Keyword(s):  
Sol Gel ◽  
Porous Membrane ◽  
Silica Particles ◽  
High Tech ◽  
Experimental Conditions ◽  
Preparation Methods ◽  
Gel Method ◽  
Membrane Materials ◽  
Sol Gel Method ◽  
And Performance

Porous membrane materials have the universal use, so it is widely considered as one of the most promising high-tech. Different membranes have different preparation methods. In this paper, the sol-gel method was applied to prepare silica particles using ammonia as catalyst of TEOS hydrolysis, then silica particles were mixed with polyethylene, and finally silica particles were dissolved with hydrofluoric acid, leaving holes, the porous materials were obtained. The results show that: (1) In this experimental conditions, the size of silica particles are closely related to the water content of the system. (2) The size of silica particles affects the agglomeration of particles. The size of silica particles are smaller, the agglomeration is more obvious. (3) As the content of PE increases, the porosity of the samples decreases continuously; in theory, when the content of silica is low, the hole will be greater.

Properties of anion exchange membrane based on polyamine: Effect of functionalized silica particles prepared by sol–gel method

2018 ◽  
Vol 322 ◽  
pp. 85-92 ◽  
Author(s):  
Narges Ataollahi ◽  
Elisa Cappelletto ◽  
Keti Vezzù ◽  
Vito Di Noto ◽  
Gianni Cavinato ◽  
...  
Keyword(s):  
Anion Exchange ◽  
Sol Gel ◽  
Silica Particles ◽  
Anion Exchange Membrane ◽  
Functionalized Silica ◽  
Gel Method ◽  
Sol Gel Method ◽  
Exchange Membrane

Pore size control of monodisperse silica particles by dual template sol–gel method

2019 ◽  
Vol 94 (1) ◽  
pp. 186-194
Author(s):  
Qiuhua Wang ◽  
Huiying Wang ◽  
Yaling Wu ◽  
Lingping Cheng ◽  
Lunan Zhu ◽  
...  
Keyword(s):  
Pore Size ◽  
Sol Gel ◽  
Size Control ◽  
Silica Particles ◽  
Gel Method ◽  
Sol Gel Method ◽  
Monodisperse Silica ◽  
Pore Size Control

In situ formed silica particles in rubber vulcanizate by the sol-gel method

Polymer ◽  
1997 ◽  
Vol 38 (17) ◽  
pp. 4417-4423 ◽  
Author(s):  
Yuko Ikeda ◽  
Shinzo Kohjiya
Keyword(s):  
Sol Gel ◽  
Silica Particles ◽  
Gel Method ◽  
Sol Gel Method ◽  
Rubber Vulcanizate

Synthesis of Submicron-Sized Titania-Coated Silica Particles with a Sol-Gel Method and Their Application to Colloidal Photonic Crystals

2006 ◽  
Vol 38 (1) ◽  
pp. 91-95 ◽  
Author(s):  
Eiichi Mine ◽  
Mitsuaki Hirose ◽  
Masaki Kubo ◽  
Yoshio Kobayashi ◽  
Daisuke Nagao ◽  
...  
Keyword(s):  
Photonic Crystals ◽  
Sol Gel ◽  
Silica Particles ◽  
Gel Method ◽  
Sol Gel Method ◽  
Colloidal Photonic Crystals

Synthesis of Nano Silica Particles for Polishing Prepared by Sol?Gel Method

2004 ◽  
Vol 32 (1-3) ◽  
pp. 79-83 ◽  
Author(s):  
Yasuhiko Arai ◽  
Hiroyo Segawa ◽  
Kazuaki Yoshida
Keyword(s):  
Sol Gel ◽  
Silica Particles ◽  
Nano Silica ◽  
Gel Method ◽  
Sol Gel Method
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