Freezing Point Depressions of Aqueous MEA, MDEA, and MEA−MDEA Measured with a New Apparatus

Philip Loldrup Fosbøl; Mikkel Gielsager Pedersen; Kaj Thomsen

doi:10.1021/je100994v

Freezing Point Depressions of Aqueous MEA, MDEA, and MEA−MDEA Measured with a New Apparatus

Philip Loldrup Fosbøl, Mikkel Gielsager Pedersen, Kaj Thomsen

Technical University of Denmark

Research output: Contribution to journal › Journal article › Research › peer-review

Abstract

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.

Original language	English
Journal	Journal of Chemical and Engineering Data
Volume	56
Issue number	4
Pages (from-to)	995-1000
ISSN	0021-9568
DOIs	https://doi.org/10.1021/je100994v
Publication status	Published - 2011

Bibliographical note

This article is part of the John M. Prausnitz Festschrift special issue.

Access to Document

10.1021/je100994v

OpenUrl availability

Full text

Cite this

@article{ce7e9b8125b0498d8e12e8464f3da0c6,

title = "Freezing Point Depressions of Aqueous MEA, MDEA, and MEA−MDEA Measured with a New Apparatus",

abstract = "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.",

author = "Fosb{\o}l, {Philip Loldrup} and Pedersen, {Mikkel Gielsager} and Kaj Thomsen",

note = "This article is part of the John M. Prausnitz Festschrift special issue.",

year = "2011",

doi = "10.1021/je100994v",

language = "English",

volume = "56",

pages = "995--1000",

journal = "Journal of Chemical and Engineering Data",

issn = "0021-9568",

publisher = "American Chemical Society",

number = "4",

}

TY - JOUR

T1 - Freezing Point Depressions of Aqueous MEA, MDEA, and MEA−MDEA Measured with a New Apparatus

AU - Fosbøl, Philip Loldrup

AU - Pedersen, Mikkel Gielsager

AU - Thomsen, Kaj

N1 - This article is part of the John M. Prausnitz Festschrift special issue.

PY - 2011

Y1 - 2011

N2 - 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.

AB - 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.

U2 - 10.1021/je100994v

DO - 10.1021/je100994v

M3 - Journal article

SN - 0021-9568

VL - 56

SP - 995

EP - 1000

JO - Journal of Chemical and Engineering Data

JF - Journal of Chemical and Engineering Data

IS - 4

ER -

Freezing Point Depressions of Aqueous MEA, MDEA, and MEA−MDEA Measured with a New Apparatus

Abstract

Bibliographical note

Access to Document

OpenUrl availability

Fingerprint

Cite this