Qing Yi,Wei-Peng Chen,Xiang-yang Zhang,Yan-Yang Wu,Bin Wu,Kui Chen,Li-Jun Ji
The isobaric vapor–liquid equilibrium (VLE) data of 2-phenylethanol (2-PE) + 2-ethylphenol (2-EP), 1-phenyl-2-propanol (1,2-PP) + 2-ethylphenol (2-EP), 2-phenylethanol (2-PE) + 1-phenyl-2-propanol (1,2-PP) and 2-phenyl-1-propanol (2,1-PP) + 2-ethylphenol (2-EP) were measured by a modified Rose type still under 101.3 kPa. Both the Fredenslund test and Redlich–Kister area test were employed to verify the consistency of the experimental data. Besides, the experimental isobaric VLE data were correlated by Wilson, nonrandom two-liquid, and universal quasi-chemical models, and the corresponding parameters were obtained accordingly. All three models showed good agreement with the experimental data, and among which the Wilson model performed slightly better than the others.
Yanyang Wu,Jiabo Rao,Qing Yi,Zhihui Ma,Bin Wu,Kui Chen,Lijun Ji
Metal-organic frameworks (MOFs) with sensitive nanospace and selective binding sites are widely used to discriminate the subtle structural. Adsorption performances of 2-Phenylethanol, 1-Phenyl-2-propanol, and 2-Ethylphenol on MOFs were studied in this paper. Eight MOFs were prepared hydrothermally and NH 2 -UiO-66(1) was chosen as the subsequent adsorbent based on the larger selectivity for both 1-Phenyl-2-propanol/2-Phenylethanol and 2-Ethylphenol/2-Phenylethanol. Studies on adsorption kinetics showed that pseudo-first-order model was suitable for adsorption performances of 1-Phenyl-2-propanol on NH 2 -UiO-66(1), while pseudo-second-order model was suitable for both 2-Phenylethanol and 2-Ethylphenol. The adsorption isotherm revealed that Langmuir model was suitable for 1-Phenyl-2-propanol, 2-Ethylphenol, and 2-Phenylethanol. Thermodynamic parameters including Gibbs free energy, enthalpy, and entropy indicated that adsorption of 1-Phenyl-2-propanol on NH 2 -UiO-66(1) was a spontaneous and exothermic physisorption process, while those of 2-Ethylphenol and 2-Phenylethanol were spontaneous and endothermic physisorption processes. The adsorption process indicated that the separation of 2-Phenylethanol from 1-Phenyl-2-propanol and 2-Ethylphenol on NH 2 -UiO-66(1) was due to the Lewis acid-base interactions and sieving effect. NH 2 -UiO-66(1) was also treated the simulated enriched 2-Phenylethanol solutions and 99.5% 2-Phenylethanol was obtained. In conclusion, NH 2 -UiO-66(1) can be a feasible adsorbent to separate 2-Phenylethanol from 1-Phenyl-2-propanol and 2-Ethylphenol for industrial application.
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