Crystallization kinetics from mixture Na2SO4/glycerol droplets of Na2SO4 by FTIR-ATR

Dan Ting Tan; Chen Cai; Yun Zhang; Na Wang; Shu Feng Pang; Yun Hong Zhang

doi:10.1016/j.chemphys.2016.07.007

Crystallization kinetics from mixture Na₂SO₄/glycerol droplets of Na₂SO₄ by FTIR-ATR

Dan Ting Tan, Chen Cai, Yun Zhang, Na Wang, Shu Feng Pang^*, Yun Hong Zhang

^*Corresponding author for this work

School of Chemistry and Chemical Engineering

Beijing Institute of Technology

Research output: Contribution to journal › Article › peer-review

10 Citations (Scopus)

Abstract

The efflorescence of mixed Na₂SO₄/glycerol aerosols on the ZnSe substrate with various mole ratios (Na₂SO₄/glycerol = 1:1, 1:2, 1:4) has been studied in the relative humidity (RH) linearly decline process, using a situ Fourier transform infrared attenuated total reflection (FTIR-ATR) technique. The crystal ratio at a given RH can be gained by the absorbance of the band at 1132 cm⁻¹, which shows the incomplete nucleation for mixed Na₂SO₄/glycerol aerosols and the decreased amount of the droplets crystallized at the lowest RH with the glycerol increase. Using the volume fraction of droplets that have yet to crystallize, the heterogeneous nucleation kinetics has been gained. By the Extended Aerosol Inorganics Model (E-AIM), the nucleation rate as the function of solute saturation degree has been gained for various mixed Na₂SO₄/glycerol aerosols.

Original language	English
Pages (from-to)	131-135
Number of pages	5
Journal	Chemical Physics
Volume	475
DOIs	https://doi.org/10.1016/j.chemphys.2016.07.007
Publication status	Published - 22 Aug 2016

Keywords

FTIR-ATR
NaSO/glycerol
Nucleation rate
Saturation

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10.1016/j.chemphys.2016.07.007

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title = "Crystallization kinetics from mixture Na2SO4/glycerol droplets of Na2SO4 by FTIR-ATR",

abstract = "The efflorescence of mixed Na2SO4/glycerol aerosols on the ZnSe substrate with various mole ratios (Na2SO4/glycerol = 1:1, 1:2, 1:4) has been studied in the relative humidity (RH) linearly decline process, using a situ Fourier transform infrared attenuated total reflection (FTIR-ATR) technique. The crystal ratio at a given RH can be gained by the absorbance of the band at 1132 cm−1, which shows the incomplete nucleation for mixed Na2SO4/glycerol aerosols and the decreased amount of the droplets crystallized at the lowest RH with the glycerol increase. Using the volume fraction of droplets that have yet to crystallize, the heterogeneous nucleation kinetics has been gained. By the Extended Aerosol Inorganics Model (E-AIM), the nucleation rate as the function of solute saturation degree has been gained for various mixed Na2SO4/glycerol aerosols.",

keywords = "FTIR-ATR, NaSO/glycerol, Nucleation rate, Saturation",

author = "Tan, {Dan Ting} and Chen Cai and Yun Zhang and Na Wang and Pang, {Shu Feng} and Zhang, {Yun Hong}",

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year = "2016",

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doi = "10.1016/j.chemphys.2016.07.007",

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T1 - Crystallization kinetics from mixture Na2SO4/glycerol droplets of Na2SO4 by FTIR-ATR

AU - Tan, Dan Ting

AU - Cai, Chen

AU - Zhang, Yun

AU - Wang, Na

AU - Pang, Shu Feng

AU - Zhang, Yun Hong

PY - 2016/8/22

Y1 - 2016/8/22

N2 - The efflorescence of mixed Na2SO4/glycerol aerosols on the ZnSe substrate with various mole ratios (Na2SO4/glycerol = 1:1, 1:2, 1:4) has been studied in the relative humidity (RH) linearly decline process, using a situ Fourier transform infrared attenuated total reflection (FTIR-ATR) technique. The crystal ratio at a given RH can be gained by the absorbance of the band at 1132 cm−1, which shows the incomplete nucleation for mixed Na2SO4/glycerol aerosols and the decreased amount of the droplets crystallized at the lowest RH with the glycerol increase. Using the volume fraction of droplets that have yet to crystallize, the heterogeneous nucleation kinetics has been gained. By the Extended Aerosol Inorganics Model (E-AIM), the nucleation rate as the function of solute saturation degree has been gained for various mixed Na2SO4/glycerol aerosols.

AB - The efflorescence of mixed Na2SO4/glycerol aerosols on the ZnSe substrate with various mole ratios (Na2SO4/glycerol = 1:1, 1:2, 1:4) has been studied in the relative humidity (RH) linearly decline process, using a situ Fourier transform infrared attenuated total reflection (FTIR-ATR) technique. The crystal ratio at a given RH can be gained by the absorbance of the band at 1132 cm−1, which shows the incomplete nucleation for mixed Na2SO4/glycerol aerosols and the decreased amount of the droplets crystallized at the lowest RH with the glycerol increase. Using the volume fraction of droplets that have yet to crystallize, the heterogeneous nucleation kinetics has been gained. By the Extended Aerosol Inorganics Model (E-AIM), the nucleation rate as the function of solute saturation degree has been gained for various mixed Na2SO4/glycerol aerosols.

KW - FTIR-ATR

KW - NaSO/glycerol

KW - Nucleation rate

KW - Saturation

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DO - 10.1016/j.chemphys.2016.07.007

M3 - Article

AN - SCOPUS:84978763059

SN - 0301-0104

VL - 475

SP - 131

EP - 135

JO - Chemical Physics

JF - Chemical Physics

ER -

Crystallization kinetics from mixture Na₂SO₄/glycerol droplets of Na₂SO₄ by FTIR-ATR

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Keywords

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