Solubilities of d-xylose in water+(acetic acid or propionic acid) mixtures at atmospheric pressure and different temperatures

Li, Tao; Jiang, Zhenxi; Chen, Fei-xiong; Ren, Baozeng

doi:10.1016/j.fluid.2012.07.014

Cited by 67 publications

(23 citation statements)

References 15 publications

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“…Further when ILs are used as solvents, there is also a possibility for its regeneration and reutilization which ultimately reduces the associated process cost [25]. Thermodynamic models such as non-random two liquid (NRTL) and UNIversal QUAsi-Chemical theory (UNIQUAC) are generally used to describe and predict the phase equilibria of the mixture (solid-liquid equilibria) containing monosaccharides and IL [26][27][28][29][30][31]. However both NRTL and UNIQUAC model are dependent on experimental data for generating the binary interaction parameters.…”

Section: Introductionmentioning

confidence: 99%

Solubility of glucose, xylose, fructose and galactose in ionic liquids: Experimental and theoretical studies using a continuum solvation model

Mohan

Goud

Banerjee

2015

Fluid Phase Equilibria

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Section: Introductionmentioning

confidence: 99%

Solubility of glucose, xylose, fructose and galactose in ionic liquids: Experimental and theoretical studies using a continuum solvation model

Mohan

Goud

Banerjee

2015

Fluid Phase Equilibria

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“…The λ h model, which has been developed by Buchowski et al, is a semi‐empirical equation , . The evaluations for the λ h model are made with the help of Eq.…”

Section: Resultsmentioning

confidence: 99%

“…In this study, the solubility of gypsum was measured in HCl solutions at different temperatures and in the presence of two impurities, i.e., Cr 3+ and Fe 3+ ions, which can occur due to the corrosive effects of the acidic media. The solubility data were correlated with the Buchowski‐Kiazczak ( λ h ) , and modified Apelblat models, and some thermodynamic parameters such as the standard molar dissolution enthalpy, the standard molar Gibbs energy, and the entropy of solutions were calculated. The combined effects of temperature, HCl concentration, and concentrations of Cr 3+ and Fe 3+ ions on the solubility of gypsum were examined by central composite design (CCD) in response surface methodology (RSM) by Design Expert 10 statistical software.…”

Section: Introductionmentioning

confidence: 99%

Thermodynamic Models and Central Composite Design for Calcium Sulfate Dihydrate Solubility

2020

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The solubility of calcium sulfate dihydrate (gypsum) was measured in HCl solutions in the presence of Cr 3+ and Fe 3+ ions at various temperatures. The results indicate that the solubility of gypsum is fairly dependent on the concentrations of HCl and impurities, i.e., Cr 3+ and Fe 3+ ions. The experimental data were analyzed by applying the Buchowski-Kiazczak (lh) model and the modified Apelblat model. Some thermodynamic parameters, such as the standard molar dissolution enthalpy, the standard molar Gibbs energy, and the entropy of solutions, were calculated by Van't Hoff analysis and Gibbs equation. The influences of the concentrations of both HCl and impurities, i.e., Cr 3+ and Fe 3+ ions, and temperature on the gypsum solubility were examined by applying the central composite design.

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“…Furthermore, according to the modified van't Hoff equation together with the modified Apelblat model, 41 the standard enthalpy and standard entropy of solution of ITX in the solvents are predicated from eqs 6 and 7, respectively:…”

Section: ■ Results and Discussionmentioning

confidence: 99%

Determination and Correlation of Solubilities of 2-Isopropylthioxanthone (ITX) in Seven Different Solvents from (299.15 to 329.85) K

et al. 2015

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The solubilities of 2-isopropylthioxanthone (ITX) in methanol, toluene, ethanol, acetone, ethyl acetate, 1,4-dioxane, and 1,2-dichloroethane were determined at temperatures ranging from (299.15 to 329.85) K under atmospheric pressure by employing the synthetic method. The solid−liquid equilibrium of the mixture was detected by a laser monitoring observation technique and found to increase with an increase in temperature. The experimental solubilities were correlated by the modified Apelblat and λh equations. The modified Apelblat equation fits well with the experimental data with the relative deviation less than 2.86 %. The standard enthalpy and standard entropy of the solution of ITX in different solvents were obtained by van't Hoff equation together with the modified Apelblat model. ■ INTRODUCTIONIn the extensive applications of photopolymerization science and technology, photoinitiator systems, which can produce free radicals to trigger polymerization, play a very important role. 1−4 As a commercially sulfur-type photoinitiators, 2-isopropylthioxanthone (ITX) (molecular formula C 16 H 14 OS; molecular weight 254.35; CAS registry no. 5495-84-1), with its chemical structure shown in Figure 1, has been widely used in many processes such as printing inks, surface coatings, microelectronics, and photoresists. 5 ITX was also widely used in UV curing to promote the polymerization of inks used in paper-or plastic-based packaging materials because of its high photoinitiation efficiency and absorption characteristics at near-UV range (370−385 nm). 6−15 The obvious advantages of ITX are mutual solubility with organic solvent and low cost. However, these are not entirely satisfactory because, compared with high-molecular weight analogues, ITX has disadvantages such as odor, toxicity, and a tendency to migrate from printing ink into the cured materials. 16 Especially, in the case of UV inks for food packaging materials, the interest in its possible biological activities and potential hazard for human health became topical since baby milk was detected to be contaminated with ITX. 17 Considering the importance of economic and ecological advantages, the studies of ITX have been increased rapidly both in experiments and theories.As is well-known, ITX is highly lipophilic but virtually insoluble in water, so extraction, purification, and detection of ITX has always been carried out by traditional organic solvent, such as methanol, toluene, acetonitrile ethanol, and so on, in synthesis and analysis process of ITX. 18−24 Moreover, with regard to its role as triplet sensitizer in photolysis, 25,26 experiments revealed that the spectroscopic properties of ITX are strongly dependent on the nature of the solvent. 27−32 Hence, for improving and developing the 2-isopropylthioxanthone's determination, selective, efficient and rapid separation, and subsequent industrial application, it is very important to know the solubility of ITX in varied kinds of solvents at different temperatures. To the best of our knowledge, however, only the sol...

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Solubilities of d-xylose in water+(acetic acid or propionic acid) mixtures at atmospheric pressure and different temperatures

Cited by 67 publications

References 15 publications

Solubility of glucose, xylose, fructose and galactose in ionic liquids: Experimental and theoretical studies using a continuum solvation model

Solubility of glucose, xylose, fructose and galactose in ionic liquids: Experimental and theoretical studies using a continuum solvation model

Thermodynamic Models and Central Composite Design for Calcium Sulfate Dihydrate Solubility

Determination and Correlation of Solubilities of 2-Isopropylthioxanthone (ITX) in Seven Different Solvents from (299.15 to 329.85) K

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