2013 Fiscal Year Final Research Report
Diffusion coefficients of elemental compounds in various atmospheres
| Project/Area Number |
22360325
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Properties in chemical engineering process/Transfer operation/Unit operation
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| Research Institution | Chuo University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
KONG Chang Yi 静岡大学, 工学部, 准教授 (60334637)
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| Co-Investigator(Renkei-kenkyūsha) |
YUI Kazuko 国立環境研究所, 特別研究員 (10384174)
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| Project Period (FY) |
2010-04-01 – 2014-03-31
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| Keywords | 拡散係数 / 超臨界流体 / 金属錯体 / 過渡応答法 |
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| Research Abstract |
In self-assembly systems diffusion of elemental molecules is significantly affected by interactions between solute and solvent molecules. To study the interaction on solute diffusion coefficients, diffusion coefficients of various solutes such as ordinary organic compounds and organometallic complexes having coordination bondings in liquid organic solvent, liquid water, supercritical carbon dioxide and carbon dioxide expanded methanol, a mixture of carbon dioxide and methanol were measured by the transient response techniques, the Taylor dispersion and chromatographic impulse response method. As a result, the values of diffusion coefficients were mainly dominated by the molecular size, and secondarily affected by the interaction. The diffusion coefficients were roughly correlated by the solvent viscosities over the range from supercritical fluid, gas expanded liquid to liquid states.
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