Effect of Viscosity on Particle Generation in Liquid Phase.
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- NOMURA TOSHIYUKI
- Chemical Engineering Department, Osaka Prefecture University
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- KOUSAKA YASUO
- Chemical Engineering Department, Osaka Prefecture University
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- TANAKA KEN
- Chemical Engineering Department, Osaka Prefecture University
Bibliographic Information
- Other Title
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- 液相中における粒子生成に及ぼす溶液粘度の影響
- エキソウ チュウ ニ オケル リュウシ セイセイ ニ オヨボス ヨウエキ ネン
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Abstract
The engineering model, where the number concentration of particles generated by homogeneousnucleation n* is determined so that the generation rate of monomers G* is equal to their vanishing rate at monomer concentration C*, which corresponds to a critical supersaturated state of nucleation, has been proposed by the present authors (Kousaka and Nomura, Kagaku Kogaku Ronbunsyu, 23, 666-672 (1997)). The cell model, which is familiar in particle dispersed systems, is applied and the solution of unsteady diffusion rate of monomers onto a nucleus is used in the analysis. As a result, we obtain the relation among the parameters as G* =4πr* DC* n*, where D is diffusion coefficient of monomer, and r* is radius of nucleus. The effect of monomer diffusion coefficient on particle generation, which is one of the factors included in the engineering model, is studied for systems where silver particles are generated by a reduction method in the liquid phase. The monomer diffusion coefficient is controlled by changing viscosity of the solution by addition of a thickener, and it is found experimentally that the number concentration of particles generated is inversely proportional to the monomer diffusion coefficient resulting in particle size reduction, which quantitatively support the model.
Journal
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- KAGAKU KOGAKU RONBUNSHU
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KAGAKU KOGAKU RONBUNSHU 24 (4), 642-645, 1998
The Society of Chemical Engineers, Japan
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Details 詳細情報について
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- CRID
- 1390282679487032704
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- NII Article ID
- 10002835765
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- NII Book ID
- AN00037234
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- COI
- 1:CAS:528:DyaK1cXks1Cmsrc%3D
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- ISSN
- 13499203
- 0386216X
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- NDL BIB ID
- 4507339
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed