Journal article
Freezing Point Depressions of Aqueous MEA, MDEA, and MEA−MDEA Measured with a New Apparatus
Freezing points for aqueous monoethanolamine (MEA), methyl diethanolamine (MDEA), and MEA−MDEA solutions were measured in the concentration range from 0 to 0.4 mass fractions of the alkanolamines. For the aqueous MEA−MDEA system, freezing points for 1:4, 1:2, 1:1, 2:1, and 4:1 molar ratios of MEA/MDEA were determined.
The experimental values indicate that the MDEA−water interaction is stronger than the MEA−water interaction. Measurements were carried out by a new modified Beckmann apparatus, which has not previously been described. The apparatus and method proved to have good repeatability and accuracy. A correlation of the freezing points as functions of the solution composition was made.
Measurements of aqueous MEA and aqueous MDEA were compared to experiments found in the open literature.
Language: | English |
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Publisher: | American Chemical Society |
Year: | 2011 |
Pages: | 995-1000 |
ISSN: | 15205134 and 00219568 |
Types: | Journal article |
DOI: | 10.1021/je100994v |