Densities, viscosities, and liquid diffusivities in aqueous piperazine and aqueous (piperazine plus N-methyldiethanolamine) solutions

Peter W.J. Derks; Espen S. Hamborg; J.A. Hogendoorn; John P.M. Niederer; Geert F. Versteeg

doi:10.1021/je800031p

Densities, viscosities, and liquid diffusivities in aqueous piperazine and aqueous (piperazine plus N-methyldiethanolamine) solutions

Peter W.J. Derks, Espen S. Hamborg, J.A. Hogendoorn, John P.M. Niederer, Geert F. Versteeg

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Abstract

Densities and viscosities of aqueous solutions containing both piperazine (PZ) and N-methyldiethanolamine (MDEA) have been determined at a temperature range from (293.15 to 323.15) K. The concentrations of MDEA have been kept constant at (1, 2, 3, and 4) mol·dm−3 with the concentration of PZ varying from (0 to 1) mol·dm−3. Liquid diffusivities of aqueous PZ solutions have been determined using the Taylor dispersion technique over a temperature range from (293.15 to 368.15) K and concentrations from (0 to 1.5) mol·dm−3. At infinite dilution, the method proposed by Othmer & Thakar can be used to estimate the liquid diffusivities, and a modified Stokes−Einstein relation can be used to predict the diffusivities at higher concentrations. Liquid diffusivities of both PZ and MDEA have been determined in aqueous solutions containing 4.0 mol·dm−3 MDEA and (0, 0.5, and 1.0) mol·dm−3 PZ at a temperature range from (298.15 to 368.15) K. The liquid diffusivities can be estimated by a modified Stokes−Einstein relation.

Original language	English
Pages (from-to)	1179-1185
Number of pages	7
Journal	Journal of chemical & engineering data
Volume	53
Issue number	5
DOIs	https://doi.org/10.1021/je800031p
Publication status	Published - 2008

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title = "Densities, viscosities, and liquid diffusivities in aqueous piperazine and aqueous (piperazine plus N-methyldiethanolamine) solutions",

abstract = "Densities and viscosities of aqueous solutions containing both piperazine (PZ) and N-methyldiethanolamine (MDEA) have been determined at a temperature range from (293.15 to 323.15) K. The concentrations of MDEA have been kept constant at (1, 2, 3, and 4) mol·dm−3 with the concentration of PZ varying from (0 to 1) mol·dm−3. Liquid diffusivities of aqueous PZ solutions have been determined using the Taylor dispersion technique over a temperature range from (293.15 to 368.15) K and concentrations from (0 to 1.5) mol·dm−3. At infinite dilution, the method proposed by Othmer & Thakar can be used to estimate the liquid diffusivities, and a modified Stokes−Einstein relation can be used to predict the diffusivities at higher concentrations. Liquid diffusivities of both PZ and MDEA have been determined in aqueous solutions containing 4.0 mol·dm−3 MDEA and (0, 0.5, and 1.0) mol·dm−3 PZ at a temperature range from (298.15 to 368.15) K. The liquid diffusivities can be estimated by a modified Stokes−Einstein relation.",

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AU - Derks, Peter W.J.

AU - Hamborg, Espen S.

AU - Hogendoorn, J.A.

AU - Niederer, John P.M.

AU - Versteeg, Geert F.

PY - 2008

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N2 - Densities and viscosities of aqueous solutions containing both piperazine (PZ) and N-methyldiethanolamine (MDEA) have been determined at a temperature range from (293.15 to 323.15) K. The concentrations of MDEA have been kept constant at (1, 2, 3, and 4) mol·dm−3 with the concentration of PZ varying from (0 to 1) mol·dm−3. Liquid diffusivities of aqueous PZ solutions have been determined using the Taylor dispersion technique over a temperature range from (293.15 to 368.15) K and concentrations from (0 to 1.5) mol·dm−3. At infinite dilution, the method proposed by Othmer & Thakar can be used to estimate the liquid diffusivities, and a modified Stokes−Einstein relation can be used to predict the diffusivities at higher concentrations. Liquid diffusivities of both PZ and MDEA have been determined in aqueous solutions containing 4.0 mol·dm−3 MDEA and (0, 0.5, and 1.0) mol·dm−3 PZ at a temperature range from (298.15 to 368.15) K. The liquid diffusivities can be estimated by a modified Stokes−Einstein relation.

AB - Densities and viscosities of aqueous solutions containing both piperazine (PZ) and N-methyldiethanolamine (MDEA) have been determined at a temperature range from (293.15 to 323.15) K. The concentrations of MDEA have been kept constant at (1, 2, 3, and 4) mol·dm−3 with the concentration of PZ varying from (0 to 1) mol·dm−3. Liquid diffusivities of aqueous PZ solutions have been determined using the Taylor dispersion technique over a temperature range from (293.15 to 368.15) K and concentrations from (0 to 1.5) mol·dm−3. At infinite dilution, the method proposed by Othmer & Thakar can be used to estimate the liquid diffusivities, and a modified Stokes−Einstein relation can be used to predict the diffusivities at higher concentrations. Liquid diffusivities of both PZ and MDEA have been determined in aqueous solutions containing 4.0 mol·dm−3 MDEA and (0, 0.5, and 1.0) mol·dm−3 PZ at a temperature range from (298.15 to 368.15) K. The liquid diffusivities can be estimated by a modified Stokes−Einstein relation.

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DO - 10.1021/je800031p

M3 - Article

SN - 0021-9568

VL - 53

SP - 1179

EP - 1185

JO - Journal of chemical & engineering data

JF - Journal of chemical & engineering data

IS - 5

ER -

Densities, viscosities, and liquid diffusivities in aqueous piperazine and aqueous (piperazine plus N-methyldiethanolamine) solutions

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