Measurement and correlation for the solubility of dimethyl succinylsuccinate in (methanol+water) and (methanol+dimethyl succinate) binary solvent mixtures

Liu, Tong; Zou, Wei; Zhao, Wen; Zhang, Fengbao; Zhang, Guoliang; Xia, Qing

doi:10.1016/j.fluid.2014.04.012

Cited by 12 publications

(4 citation statements)

References 21 publications

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“…The solubility of CNTNa was measured by the dynamic method, − in which a laser monitoring (JS2-1009016, Beijing, China) observation technique was used to determine the solid–liquid equilibrium (SLE) temperature.…”

Section: Methodsmentioning

confidence: 99%

Improvement of the Nitration Process in 2-Amino-5-chloro-4-methylbenzenesulfonic Acid Synthesis

Han

Liu

et al. 2015

Ind. Eng. Chem. Res.

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The nitration process as one step in 2-amino-5-chloro-4-methylbenzenesulfonic acid synthesis was improved by optimizing nitration reaction conditions, improving product separation method to eliminate salty scrap acid and cycle use of the concentrated sulfuric acid. The effect of various parameters such as temperature, quality of fuming sulfuric acid, quality of fuming nitric acid, and reaction time was studied for optimization of the nitration reaction condition. In the optimum conditions, the mass ratio of fuming sulfuric acid to sodium 2-chlorotoluene-4-sulfonate and molar ratio of fuming nitric acid to sodium 2-chlorotoluene-4-sulfonate were 4 and 1.05, respectively. The reaction temperature was −5 °C, and the time of reaction was 3 h. By applying the optimum reaction conditions, the yield of nitration reaction was increased to 91%, larger than that of the current industrial process whose yield is only 65.7%. The solubilities of sodium 2-chloro-5-nitrotoluene-4-sulfonate in aqueous sulfuric acid solutions were determined by a dynamic method, and the results showed that the lowest sodium 2-chloro-5-nitrotoluene-4-sulfonate solubility was exhibited in 0.7 mass fraction aqueous sulfuric acid solutions. So the product sodium 2-chloro-5-nitrotoluene-4-sulfonate of nitration reaction was separated by filtration from 0.7 mass fraction aqueous sulfuric acid solutions, and the obtained concentrated aqueous sulfuric acid solution was reused.

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Section: Methodsmentioning

confidence: 99%

Improvement of the Nitration Process in 2-Amino-5-chloro-4-methylbenzenesulfonic Acid Synthesis

Han

Liu

et al. 2015

Ind. Eng. Chem. Res.

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“…The apparatus and procedure of the experiment were already described in detail previously. , A certain amount of solute and solvent were weighed accurately using an analytical balance (Gibertini, Crystal 200, Italy, with an accuracy of ±0.0001 g) and transferred into a jacketed glass vessel. Afterward, the mixture was stirred continuously and heated slowly at a heating rate less than 0.2K·h –1 .…”

Section: Methodsmentioning

confidence: 99%

Measurement and Correlation for the Solubility of Sodium p-Toluenesulfonate, Sodium Sulfite, and Sodium p-Methylphenoxide in Aqueous Sodium Hydroxide Solutions and Sodium Sulfite in Aqueous Ethanol Solutions

et al. 2018

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The solubilities of sodium p-toluenesulfonate (NaPTS), sodium sulfite (Na 2 SO 3 ), and sodium p-methylphenoxide (NaCRS) in aqueous NaOH solutions and Na 2 SO 3 in aqueous ethanol solutions were investigated using a dynamic method over the temperature range from 277 to 341 K at atmospheric pressure. The experimental results showed that the solubilities of NaPTS, Na 2 SO 3 , and NaCRS in aqueous NaOH solutions and Na 2 SO 3 in aqueous ethanol solutions decreased distinctly with the solutefree mass fraction of NaOH (w 4 0 ) and ethanol (w 5 0 ). Further, there were obvious transition points in the solubility−temperature curves of NaPTS and Na 2 SO 3 in aqueous NaOH solutions, and the transition points shifted to lower temperature as w 4 0 rose. The forming of transition point was due to the different equilibrium solid phase, which was revealed by characterization of the equilibrium solid phase. But the transition points in the solubility−temperature curves of Na 2 SO 3 in aqueous ethanol solutions remained constant at different w 5 0 values. As the temperature rose, the solubilities of NaPTS and NaCRS in aqueous NaOH solutions increased, while the solubilities of Na 2 SO 3 increased at first and then decreased after the transition points in both aqueous NaOH and ethanol solutions. The experimental data were correlated with the electrolyte nonrandom two-liquid (E-NRTL) model, and model parameters were determined simultaneously. On the basis of the solubility difference between Na 2 SO 3 and NaCRS, a new process for reusing the NaOH in the alkali fusion reaction residue was proposed theoretically.

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“…A cold-water condenser tube was connected with the glass vessel to cool the evaporation of the solvent. The apparatus and procedure of the solubility experiments were described in detail previously. , Prepared solvent and solute were weighed using an electronic analytical balance (Gibertini, Crystal 200, Italy, accuracy of ±0.0001g) and transferred into a jacketed glass vessel. The mixtures were stirred continuously with a magnetic stir bar and heated slowly at a rate less than 0.2 K h –1 .…”

Section: Experimental Sectionmentioning

confidence: 99%

Solubilities of Sodium 1- and 2-Naphthalenesulfonate in Aqueous Sodium Hydroxide Solutions and Its Application for Optimizing the Production of 2-Naphthol

Zhao

Pei

Zhang

et al. 2017

Ind. Eng. Chem. Res.

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The solubilities of sodium 1-and 2-naphthalenesulfonate (1-and 2-SNS) in aqueous sodium hydroxide solutions were measured over the temperature range from 276 to 337 K at atmospheric pressure by a dynamic method. The experimental results showed that the solubilities of 1-and 2-SNS both increased with temperature and decreased with concentrations of aqueous sodium hydroxide solutions. The experimental data were correlated with the new electrolyte nonrandom two-liquid (E-NRTL) model. The calculated results showed good agreement with the experimental data. A new strategy, based on the solubility difference between 1-and 2-SNS in aqueous sodium hydroxide solutions, was carried out in laboratory scale. This new strategy, in which the current process of blowing naphthalene was replaced by removing the byproduct according to the solubility difference, overcame the drawbacks of blowing naphthalene and made a good separation effect. The best separation effect was attained when the concentration of aqueous sodium hydroxide solution was 0.07 and the operating temperature was 298.15 K. The purities of obtained 1-and 2-SNS were 0.8369 and 0.9854 in this operating condition, respectively. The new strategy has potential in industrial application for optimizing the production of 2-naphthol.

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Measurement and correlation for the solubility of dimethyl succinylsuccinate in (methanol+water) and (methanol+dimethyl succinate) binary solvent mixtures

Cited by 12 publications

References 21 publications

Improvement of the Nitration Process in 2-Amino-5-chloro-4-methylbenzenesulfonic Acid Synthesis

Improvement of the Nitration Process in 2-Amino-5-chloro-4-methylbenzenesulfonic Acid Synthesis

Measurement and Correlation for the Solubility of Sodium p-Toluenesulfonate, Sodium Sulfite, and Sodium p-Methylphenoxide in Aqueous Sodium Hydroxide Solutions and Sodium Sulfite in Aqueous Ethanol Solutions

Solubilities of Sodium 1- and 2-Naphthalenesulfonate in Aqueous Sodium Hydroxide Solutions and Its Application for Optimizing the Production of 2-Naphthol

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