Solubility behaviour and thermodynamic analysis of methyleneaminoacetonitrile in binary (ethanol + water, ethanol + 2-propanol, ethanol + n-butanol) solvents

Wang, Long; Sun, Jingping; Hua, Yingpeng; Xu, Li; Liu, Guoji

doi:10.1016/j.jct.2019.06.009

Cited by 14 publications

(5 citation statements)

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“…In addition to the empirical principle of “similar compatibility”, factors such as solvent polarity, dipole moment, molecular shape, size, etc. should also be considered. , According to some parameters related to the physicochemical properties of the solvents given in Table , the solubility of 7-azaindene seems to be a result of a combination of these factors. It reminds us that it is inaccurate to predict the solubility at higher temperatures based on the existing solubility of 7-azaindole.…”

Section: Resultsmentioning

confidence: 99%

Solubility and Dissolution Behavior Analysis of 7-Azaindole in Pure and Binary Mixture Solvents at Temperatures Ranging from 278.15 to 323.15 K

Deng

Zhao

et al. 2020

J. Chem. Eng. Data

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in this paper, the solubility of 7-azaindole was measured in nine pure solvents (ethanol, isopropanol, n-propanol, methanol, EA, acetone, acetonitrile, n-hexane, tetrahydrofuran, THF) as well as in three binary mixed solvents (acetone + n-hexane, THF + n-hexane, and isopropanol + n-hexane) by a gravimetric method at temperatures from 278.15 to 323.15 K under atmospheric pressure. The solubility of 7-azaindole in selected solvents is closely related to the temperature and solvent composition: in nine pure solvents, the order of solubility of 7-zazindole is THF > acetone > methanol > isopropanol ≥ EA > ethanol > acetonitrile > n-hexane when the temperature is below 298.15 K. Nevertheless, as the temperature increases continually (298.15–328.15 K), the order of solubility changes to THF > acetone > methanol > isopropanol > n-propanol > ethanol > EA > acetonitrile > n-hexane; in three binary mixed solvents, both the temperature and solvent composition can influence the solubility of 7-azaindole, and the latter has a greater impact. The modified Apelblat model, λh model, Jouyban–Acree model, and CNIBS/R–K equation were used to correlate the experimental value. In these models, the Apelblat equation is more suitable for correlating 7-azaindole solubility in nine pure solvents; however, for three binary mixed solvents, the solubility of 7-azaindole is closer to the simulated value of the Jouyban–Acree model. Moreover, the KAT LASER model was used to deeply understand the influence of solvents on the solubility of 7-azaindole by multiple linear regression analysis (MLRA) of the solvent parameters involved in this model.

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Section: Resultsmentioning

confidence: 99%

Solubility and Dissolution Behavior Analysis of 7-Azaindole in Pure and Binary Mixture Solvents at Temperatures Ranging from 278.15 to 323.15 K

Deng

Zhao

et al. 2020

J. Chem. Eng. Data

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“…The purity of the BPA and solvents was measured by gas chromatography (Agilent GC7890B). , No further purification was carried out. More details about the chemical information are presented in Table .…”

Section: Experimental Sectionmentioning

confidence: 99%

“…The magnetic stirrer was purchased from Shanghai Mei Yingpu instrument and Meter Manufacturing Co., Ltd. The laser monitoring system with photoelectric conversion function was designed by Laser institute of Zhengzhou University. , The electronic analytical balance (type LA120S, precision, ±0.0001 g) was produced by Sartorius AG of Goettingen. The high-purity water used in this experiment was prepared by two-stage purification of ion exchange and reverse osmosis (type D701, Guangdong Dien technology Co. LTD).…”

Section: Experimental Sectionmentioning

confidence: 99%

“…In this study, the laser dynamic method was adopted to constantly monitor the terminal point of dissolution. − The appropriate amount of solvent ( m 2 ) was accurately weighed with the analytical balance into the jacketed glass vessel. The constant liquid controlled by the circulating thermostatic bath flowed through the outer layer to ensure the temperature of the inner layer.…”

Section: Experimental Sectionmentioning

confidence: 99%

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Solubility Behavior and Thermodynamic Analysis of Bisphenol A in 14 Different Pure Solvents

et al. 2020

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The solubility of bisphenol A in 14 different pure solvents (N,N-dimethylformamide, formamide, acetone, 1,4dioxane, cyclohexanone, ethyl acetate, methyl acetate, acetonitrile, ethanol, methanol, 1-propanol, 1-butanol, 2-propanol, and 2butanol) was measured at T = (273.15−313.15) K under atmospheric pressure using a laser dynamic method. The experimental data of bisphenol A were correlated by modified Apelblat equation, λh equation, nonrandom two-liquid model and Wilson model, and the fitting results showed that the modified Apelblat equation gave the best correlation with the experimental results. The thermodynamic functions of bisphenol A in 14 pure solvents, such as dissolution enthalpy (Δ mix H), Gibbs energy (Δ mix G), and dissolution entropy (Δ mix S), were obtained from the Wilson model. The results of the Δ mix G < 0 and Δ mix H < 0 indicated that the dissolution process of bisphenol A in selected solvents was exothermic and spontaneous. The values of γ 1 ∞ and γ 1 were not close, indicating that bisphenol A in selected solvent solution systems was nonideal.

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“…Butyl alcohol (n-butanol) is an important industrial chemical used as a solvent [1], extracting agent [2], and as a reactant in the production of chemicals such as butyl acrylate [3] and butylated amino resins (BAR) [4]. In the production of BAR, relatively large amounts of n-butanol are disposed of as waste (incinerated), because of contamination with formaldehyde, which prevents its direct reuse.…”

Section: Introductionmentioning

confidence: 99%

Recovery of N-Butanol from a Complex Five-Component Reactive Azeotropic Mixture

2022

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This paper proposes a concept of a process design for the separation and recovery of n-butanol from a five-component mixture, consisting of n-butanol, isobutanol, formaldehyde, water and methanol. The mixture is a common waste stream in the production of butylated amino resins; therefore, recovery of n-butanol is crucial to the efficiency of the process. The results show that up to 94% of the n-butanol present in the waste stream can be recovered. Under the studied conditions, 99.76% pure n-butanol can be obtained, while formaldehyde, water and methanol are present only in traces. The energy intensity of the process is estimated at 2.42 MJ/kg of purified n-butanol. The economic analysis of the process shows that the process is economically viable over a wide range of production capacities, as evidenced by high net present values and high return on investment values.

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Solubility behaviour and thermodynamic analysis of methyleneaminoacetonitrile in binary (ethanol + water, ethanol + 2-propanol, ethanol + n-butanol) solvents

Cited by 14 publications

References 73 publications

Solubility and Dissolution Behavior Analysis of 7-Azaindole in Pure and Binary Mixture Solvents at Temperatures Ranging from 278.15 to 323.15 K

Solubility and Dissolution Behavior Analysis of 7-Azaindole in Pure and Binary Mixture Solvents at Temperatures Ranging from 278.15 to 323.15 K

Solubility Behavior and Thermodynamic Analysis of Bisphenol A in 14 Different Pure Solvents

Recovery of N-Butanol from a Complex Five-Component Reactive Azeotropic Mixture

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Solubility behaviour and thermodynamic analysis of methyleneaminoacetonitrile in binary (ethanol + water, ethanol + 2-propanol, ethanol + n-butanol) solvents

Cited by 14 publications

References 73 publications

Solubility and Dissolution Behavior Analysis of 7-Azaindole in Pure and Binary Mixture Solvents at Temperatures Ranging from 278.15 to 323.15 K

Solubility and Dissolution Behavior Analysis of 7-Azaindole in Pure and Binary Mixture Solvents at Temperatures Ranging from 278.15 to 323.15 K

Solubility Behavior and Thermodynamic Analysis of Bisphenol A in 14 Different Pure Solvents

Recovery of N-Butanol from a Complex Five-Component Reactive Azeotropic Mixture

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Product

Resources

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Solubility behaviour and thermodynamic analysis of methyleneaminoacetonitrile in binary (ethanol + water, ethanol + 2-propanol, ethanol + n-butanol) solvents