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Absorption properties and spectroscopic studies of dilute sulfur dioxide in aqueous glycerol solutions / Zhiqiang He in Industrial & engineering chemistry research, Vol. 51 N° 43 (Octobre 2012) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 51 N° 43 (Octobre 2012) . - pp. 13882–13890 Titre : Absorption properties and spectroscopic studies of dilute sulfur dioxide in aqueous glycerol solutions Type de document : texte imprimé Auteurs : Zhiqiang He, Auteur ; Jinrong Liu, Auteur ; Lijun Li, Auteur Année de publication : 2013 Article en page(s) : pp. 13882–13890 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Spectroscopic  Dioxide Résumé : Isothermal gas–liquid equilibrium (GLE) data were reported at 298.15 K and 123.15 kPa for the absorption of dilute SO2 in aqueous glycerol solutions, in which SO2 partial pressures are calculated in the range of (0 to 140) Pa. The GLE data were obtained with uncertainties within ±0.02 K for temperatures, ± 0.133 kPa for total pressures, ± 3.5% for SO2 concentration in the gas phase, and ±5% for SO2 concentration in the liquid phase. The measurements showed that the solubility of dilute SO2 in the system of glycerol (1) + water (2) increases with the increasing glycerol concentrations in the whole composition, and the solubility of SO2 in the system of glycerol (1) + water (2) presents an extreme minimum of 60.1 mg·L–1 at the mass fraction of w1 = 1.00 when SO2 in the gas phase is designed at ySO2 = 5 × 10–4. In addition, UV, FTIR (Fourier transform infrared), 1H NMR, and fluorescence spectra in the absorption processes of SO2 in the system of glycerol (1) + water (2) were investigated to present important absorption mechanism. Based on the spectral results obtained, the possibility of intermolecular hydrogen bond formation by hydroxyl oxygen atoms in the glycerol molecule with hydrogen atom in the H2O molecule and S···O interaction formation by hydroxyl oxygen atom in the glycerol molecule with sulfur atom in the SO2 molecule are discussed. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie3016158 [article] Absorption properties and spectroscopic studies of dilute sulfur dioxide in aqueous glycerol solutions [texte imprimé] / Zhiqiang He, Auteur ; Jinrong Liu, Auteur ; Lijun Li, Auteur . - 2013 . - pp. 13882–13890. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 43 (Octobre 2012) . - pp. 13882–13890 Mots-clés : Spectroscopic  Dioxide Résumé : Isothermal gas–liquid equilibrium (GLE) data were reported at 298.15 K and 123.15 kPa for the absorption of dilute SO2 in aqueous glycerol solutions, in which SO2 partial pressures are calculated in the range of (0 to 140) Pa. The GLE data were obtained with uncertainties within ±0.02 K for temperatures, ± 0.133 kPa for total pressures, ± 3.5% for SO2 concentration in the gas phase, and ±5% for SO2 concentration in the liquid phase. The measurements showed that the solubility of dilute SO2 in the system of glycerol (1) + water (2) increases with the increasing glycerol concentrations in the whole composition, and the solubility of SO2 in the system of glycerol (1) + water (2) presents an extreme minimum of 60.1 mg·L–1 at the mass fraction of w1 = 1.00 when SO2 in the gas phase is designed at ySO2 = 5 × 10–4. In addition, UV, FTIR (Fourier transform infrared), 1H NMR, and fluorescence spectra in the absorption processes of SO2 in the system of glycerol (1) + water (2) were investigated to present important absorption mechanism. Based on the spectral results obtained, the possibility of intermolecular hydrogen bond formation by hydroxyl oxygen atoms in the glycerol molecule with hydrogen atom in the H2O molecule and S···O interaction formation by hydroxyl oxygen atom in the glycerol molecule with sulfur atom in the SO2 molecule are discussed. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie3016158

A new controlled method to eliminate the influence of micromixing on particle size distribution for reactive crystallization / Caihong Li in Industrial & engineering chemistry research, Vol. 51 N° 1 (Janvier 2012) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 51 N° 1 (Janvier 2012) . - pp. 576–580 Titre : A new controlled method to eliminate the influence of micromixing on particle size distribution for reactive crystallization Type de document : texte imprimé Auteurs : Caihong Li, Auteur ; Jinrong Liu, Auteur ; Hongqiang Wang, Auteur Année de publication : 2012 Article en page(s) : pp. 576–580 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Micromixing  Crystallization Résumé : This paper analyzes the problem of particle size distribution of precipitation products resulting from inhomogeneous micromixing during reactive crystallization. A new idea is proposed to solve the problem of broader particle size distribution of the precipitation product. This idea comes from the fact that the nucleation induction time can be prolonged to meet tS < tind by selecting proper operating conditions in the precipitation process. DEWEY : 660 ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie2025618 [article] A new controlled method to eliminate the influence of micromixing on particle size distribution for reactive crystallization [texte imprimé] / Caihong Li, Auteur ; Jinrong Liu, Auteur ; Hongqiang Wang, Auteur . - 2012 . - pp. 576–580. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 1 (Janvier 2012) . - pp. 576–580 Mots-clés : Micromixing  Crystallization Résumé : This paper analyzes the problem of particle size distribution of precipitation products resulting from inhomogeneous micromixing during reactive crystallization. A new idea is proposed to solve the problem of broader particle size distribution of the precipitation product. This idea comes from the fact that the nucleation induction time can be prolonged to meet tS < tind by selecting proper operating conditions in the precipitation process. DEWEY : 660 ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie2025618