MIMS evaluation of pervaporation processes

被引：11

作者：

Silva, ACB ^{[1
]}

Augusti, R ^{[1
]}

Dalmázio, I ^{[1
]}

Windmöller, D ^{[1
]}

Lago, RM ^{[1
]}

机构：

[1] Univ Fed Minas Gerais, ICEx, Dept Chem, BR-31270901 Belo Horizonte, MG, Brazil

来源：

PHYSICAL CHEMISTRY CHEMICAL PHYSICS | 1999年 / 1卷 / 10期

关键词：

D O I：

10.1039/a808730j

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The potential of MIMS (membrane introduction mass spectrometry) to study pervaporation processes through a polydimethylsiloxane (PDMS) membrane is demonstrated. From the MIMS profiles of aqueous alcohol solutions (ethanol, propan-1-ol, propan-2-ol, butan-1-ol, 2-methylpropan-2-ol, pentan-1-ol, 2-methylbutan-2-ol, cyclohexanol), diffusion coefficients and fluxes were calculated. The diffusion of chloroform, phenol, toluene and chlorobenzene was also studied. Selectivity (alpha) and enrichment (beta) pervaporation factors have been obtained for ethanol-water solutions.

引用

页码：2501 / 2504

页数：4

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