Experimental Determination and Fitting of Solid–Liquid Equilibria in the Ternary System BaO–P2O5–H2O at 323.2 K

Zheng, Zhuochao; Li, Jun; Jin, Yang; Chen, Ming

doi:10.1021/acs.jced.9b00977

Cited by 4 publications

(9 citation statements)

References 15 publications

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“…Preliminary experiments showed that the equilibria could be achieved in 5 h. Another 5 h was taken to ensure the equilibrium of the system. The supernatant after standing for 1 h was irradiated with a laser pen, and there was no Tyndall effect . It could be considered that there was no solid suspension, and the supernatant could be directly taken for analysis.…”

Section: Methodsmentioning

confidence: 99%

“…The uncertainty of dynamic viscosity calculated from kinematic viscosity, and the density was 0.0079 mPa·s. All the standard uncertainties of the measurements in this paper were calculated according to type A evaluation of standard uncertainty …”

Section: Methodsmentioning

confidence: 99%

“…The supernatant after standing for 1 h was irradiated with a laser pen, and there was no Tyndall effect. 21 It could be considered that there was no solid suspension, and the supernatant could be directly taken for analysis.…”

Section: Solubility and Physical Data Measurementsmentioning

confidence: 99%

“…All the standard uncertainties of the measurements in this paper were calculated according to type A evaluation of standard uncertainty. 21…”

Section: Solubility and Physical Data Measurementsmentioning

confidence: 99%

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Novel Strategies for Physical Data Fitting Based on a Cooling Crystallization Process of myo-Inositol

Zheng

2022

Ind. Eng. Chem. Res.

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Exhaustive data of myo-inositol solution at different temperatures, including the solubility, saturation ratio, refractive index, density, and viscosity, were measured in this work. Considering the cooling crystallization of myo-inositol, supersaturated solutions were used at 303.2−323.2 K, and unsaturated solutions were used at 328.2−353.2 K. To reduce the tedious data measurement process, novel data fitting strategies were proposed in this work. According to these strategies, models used to calculate the physical data and the saturation ratio were obtained by fitting. In these models, only the temperature and the refractive index, which could be quickly and accurately measured by instruments, were used as input variables. The calculated values from the new models were compared with experimental data and calculated values from empirical models. Root-mean-square deviation and average relative deviation were also used as evaluation indicators. As the results showed, in the myo-inositol−water system, models in this work were better than empirical models in most parts. The results obtained in this work are instructive for the cooling crystallization process of myo-inositol and inspiring to fitting model of physical data.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Solubility and Physical Data Measurementsmentioning

confidence: 99%

“…All the standard uncertainties of the measurements in this paper were calculated according to type A evaluation of standard uncertainty. 21…”

Section: Solubility and Physical Data Measurementsmentioning

confidence: 99%

See 2 more Smart Citations

Novel Strategies for Physical Data Fitting Based on a Cooling Crystallization Process of myo-Inositol

Zheng

2022

Ind. Eng. Chem. Res.

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“…The measurement of solid–liquid phase equilibrium adopted an isothermal dissolution method. , Slightly excessive manganese sulfate monohydrate was added into the pure water and CH 3 CH 2 OH/(CH 3 ) 2 CHOH-H 2 O mixed solvents with different composition ratios. The mixtures were placed in conical bottles and then put in the thermostatic vibrator (±0.1 K), stirring long enough to achieve dissolution equilibrium.…”

Section: Experimental Sectionmentioning

confidence: 99%

Determination and Correlation of Phase Equilibrium of the Ethanol/Isopropanol + Manganese Sulfate + Water Ternary Systems

Jin

et al. 2022

J. Chem. Eng. Data

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The phase equilibrium of MnSO 4 in water-alcohol solution is indispensable for the separation and purification of MnSO 4 based on solvent-out effects. To investigate the phase behavior of MnSO 4 in water-alcohol solution, the phase equilibrium of CH 3 CH 2 OH + MnSO 4 + H 2 O systems at 303.15 and 313.15 K and the (CH 3 ) 2 CHOH + MnSO 4 + H 2 O system at 303.15 K has been determined. Five regions, namely, L (liquid), L 1 + S (liquid 1 + solid), L 1 + L 2 (liquid 1 + liquid 2), L 1 + L 2 + S (liquid 1 + liquid 2 + solid), and L 2 + S (liquid 2 + solid), are observed. Furthermore, the effects of alcohol types and temperatures on the formation of aqueous two-phase systems (ATPSs) are discussed in detail. It is found that the three experimental systems are partially miscible systems. The (CH 3 ) 2 CHOH + MnSO 4 + H 2 O system has a larger split phase region and better solvent-out effect than the CH 3 CH 2 OH + MnSO 4 + H 2 O systems. Meanwhile, the temperature has a slight influence on the phase behavior and the formation of ATPSs. The solubility of MnSO 4 decreases with an increasing alcohol concentration. In addition, the relationship between the w(MnSO 4 ) and w(alcohols) of the binodal curves is obtained based on the Mistry equation, Merchuk equation, and Pirdashti equation. The NRTL model is applied to fit the liquid−liquid equilibrium. The correlation coefficients show that the experimental data is in good agreement with the calculated values. It is worth mentioning that the equilibrium solid phase is MnSO 4 •H 2 O. This work provides basic data for manganese sulfate purification and can be applied to develop thermodynamic models of ATPSs. ■ HIGHLIGHTS• The phase equilibrium of MnSO 4 in different alcohols and temperatures was studied. • The obtained LLE data was regressed by the NRTL equation.• The effects of antisolvents and temperatures on the phase behavior were discussed. • The isopropanol system has a larger split phase region and better solvent-out effect.

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Novel Environment-Friendly Spherical Agglomeration Process Designed by Crystal Self-Bridging Mechanism: A Case Study of Myo-Inositol

Zheng,

Li,

Jin

et al. 2024

Crystal Growth & Design

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Environmental-friendly spherical crystallization technology has always been the focus in the field of crystallization. In this work, a novel crystal self-bridging (CSB) mechanism is proposed. In the absence of additives and organic solvents, preliminary agglomeration is generated through the adhesion force between crystals, and stable agglomeration is formed by the solidbridge generated by crystal growth. The mechanism was explained from the perspective of the adhesion free energy. Myo-inositol (MI) was selected as the research object, and then a spherical agglomeration process was developed based on the CSB mechanism. Based on detailed experiments, we found that the seed size should be smaller than 100 μm (150 mesh). In addition, the optimal supersaturation ratio and suspension density should be 1.25 and 80 kg/m 3 , respectively. A fluidized bed crystallizer was used to enhance the crystallization process. Strategies of particle size control were proposed, and prediction equations for particle size were provided. The obtained spherical MI was compared with powdered and flaky MI, and then it was demonstrated that the spherical MI was excellent in terms of morphology, particle size distribution, flowability indicators, anticaking performance, and dissolution rate. The spherical particles of choline tartrate, niacinamide, and vitamin B1 were successfully prepared according to a CSB mechanism, so the universality of this mechanism was demonstrated. The results of this work provide effective guidance for improving the particle size and powder properties of MI and contribute to the promotion of the CSB mechanism to other systems.

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Experimental Determination and Fitting of Solid–Liquid Equilibria in the Ternary System BaO–P₂O₅–H₂O at 323.2 K

Cited by 4 publications

References 15 publications

Novel Strategies for Physical Data Fitting Based on a Cooling Crystallization Process of myo-Inositol

Novel Strategies for Physical Data Fitting Based on a Cooling Crystallization Process of myo-Inositol

Determination and Correlation of Phase Equilibrium of the Ethanol/Isopropanol + Manganese Sulfate + Water Ternary Systems

Novel Environment-Friendly Spherical Agglomeration Process Designed by Crystal Self-Bridging Mechanism: A Case Study of Myo-Inositol

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