Journal of Chemical & Engineering Data最新文献_第5页

Study on the Effect of Complex Organics on the Phase Equilibrium of the Multicomponent Salt Systems in the High Saline Wastewater of Coal Chemical Industry 煤化工高盐废水中复杂有机物对多组分盐体系相平衡的影响研究

IF 2 3区工程技术

Journal of Chemical & Engineering Data Pub Date : 2024-09-23 DOI: 10.1021/acs.jced.4c0027710.1021/acs.jced.4c00277

Xiangcheng Kong, Jinhui Li, Linlin Zhang, Xiaojun Zhang, Dongle Cheng*, Yu Gao, Ke Shi and Bo Wang*,

{"title":"Study on the Effect of Complex Organics on the Phase Equilibrium of the Multicomponent Salt Systems in the High Saline Wastewater of Coal Chemical Industry","authors":"Xiangcheng Kong, Jinhui Li, Linlin Zhang, Xiaojun Zhang, Dongle Cheng*, Yu Gao, Ke Shi and Bo Wang*, ","doi":"10.1021/acs.jced.4c0027710.1021/acs.jced.4c00277","DOIUrl":"https://doi.org/10.1021/acs.jced.4c00277https://doi.org/10.1021/acs.jced.4c00277","url":null,"abstract":"In the coal chemical industry, the solubility and physical parameters of inorganic salts in saline wastewater need to be studied to solve the pipeline scaling problem in the resource utilization process of saline wastewater. In this paper, the effects of organic substances (phenol, alcohols, oils) on the solubility, density, pH, and equilibrium solid phase of Na+, Mg2+//Cl––H2O were investigated by isothermal dissolution equilibrium method at 303.15–333.15 K. Results showed that the phase diagram of this ternary system consisted of one cosaturation point, two solubility curves, and three crystallization zones. Heating had no obvious effect on the overall solubility of the Na+, Mg2+//Cl––H2O ternary system under the interfering substances. Meanwhile, a larger MgCl2 crystallization zone was observed at the higher temperature indicating the change in solubility of MgCl2 is greater than that of NaCl. The density and pH of the system all increased with the warming. The density of the ternary system increased with the solubility of MgCl2 increasing and reached its maximum at the cosaturation point X. pH of the ternary system decreased with the increase of MgCl2 solubility and reached the minimum at the cosaturation point G of the binary system of MgCl2 + H2O.","PeriodicalId":42,"journal":{"name":"Journal of Chemical & Engineering Data","volume":"69 11","pages":"4071–4078 4071–4078"},"PeriodicalIF":2.0,"publicationDate":"2024-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142641139","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Quinolone Derivative Physicochemical Studies: Phase Equilibria in Water and Alcoholic Solutions, Ionization Constants, and Calorimetric Analyses 喹诺酮衍生物理化研究：水和酒精溶液中的相平衡、电离常数和量热分析

IF 2 3区工程技术

Journal of Chemical & Engineering Data Pub Date : 2024-09-20 DOI: 10.1021/acs.jced.4c0017910.1021/acs.jced.4c00179

Agnieszka Śliwińska*, and , Aneta Pobudkowska,

{"title":"Quinolone Derivative Physicochemical Studies: Phase Equilibria in Water and Alcoholic Solutions, Ionization Constants, and Calorimetric Analyses","authors":"Agnieszka Śliwińska*,  and , Aneta Pobudkowska, ","doi":"10.1021/acs.jced.4c0017910.1021/acs.jced.4c00179","DOIUrl":"https://doi.org/10.1021/acs.jced.4c00179https://doi.org/10.1021/acs.jced.4c00179","url":null,"abstract":"The studies were conducted on commonly used or withdrawn from the market active ingredients of drugs used in the treatment of many bacterial infections. In this research, solid–liquid phase equilibria were determined in binary systems. The substances tested were the following quinolone derivatives: cinoxacin, ciprofloxacin, flumequine, lomefloxacin hydrochloride, norfloxacin, and ofloxacin. Water, ethanol, and 1-octanol were used as solvents. Phase equilibria were determined by using dynamic and spectrophotometric methods. The results were correlated using the Wilson, NRTL, and UNIQUAC equations. Calorimetric analyses were performed by using differential scanning calorimetry to determine the phase transitions of pure substances. Ionization constants were determined spectrophotometrically at 298.2 and 310.2 K using the Bates–Schwarzenbach method. Quinolone derivatives exhibited high melting points above 490 K. The substances showed the lowest solubility in water but were higher by an order of mole fraction in alcohols, in which solubility was comparable. These quantities were below 1000th of mole fraction. Ionization constants corresponding to the deprotonation of the quinolone carboxyl group and also their zwitterionic form were determined.","PeriodicalId":42,"journal":{"name":"Journal of Chemical & Engineering Data","volume":"69 11","pages":"4038–4048 4038–4048"},"PeriodicalIF":2.0,"publicationDate":"2024-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acs.jced.4c00179","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142641137","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Measurements and Thermodynamic Model on the Solid–Liquid Phase Equilibria of the Ternary System LiBr–Li2SO4–H2O at Multitemperatures 多温度下 LiBr-Li2SO4-H2O 三元体系固液相平衡的测量结果与热力学模型

IF 2 3区工程技术

Journal of Chemical & Engineering Data Pub Date : 2024-09-18 DOI: 10.1021/acs.jced.4c0032810.1021/acs.jced.4c00328

Yang-Dian-Dian Wang, Shi-Hua Sang*, Han-Zhong Zhang and Ling-Xuan Wang,

{"title":"Measurements and Thermodynamic Model on the Solid–Liquid Phase Equilibria of the Ternary System LiBr–Li2SO4–H2O at Multitemperatures","authors":"Yang-Dian-Dian Wang, Shi-Hua Sang*, Han-Zhong Zhang and Ling-Xuan Wang, ","doi":"10.1021/acs.jced.4c0032810.1021/acs.jced.4c00328","DOIUrl":"https://doi.org/10.1021/acs.jced.4c00328https://doi.org/10.1021/acs.jced.4c00328","url":null,"abstract":"The solid–liquid phase equilibria of the ternary system LiBr–Li2SO4–H2O at 273.15, 288.15, and 308.15 K were investigated by the isothermal dissolution equilibrium method. The equilibrium solid phases were identified by X-ray powder crystal diffraction. The isothermal phase diagrams of the ternary system at different temperatures were drawn in detail. The equilibrium phase diagrams of the ternary system at 273.15, 288.15, and 308.15 K have one invariant point, two univariate curves, and two crystallization fields (corresponding to LiBr·2H2O and Li2SO4·H2O), respectively. The results show that LiBr has a strong salting-out effect on Li2SO4, and the solubilities of LiBr will be greatly improved with an increase in temperature. Furthermore, multiple linear regression and programming analysis are used to fit the single salt parameters (β(0), β(1), and Cφ) and the mixed ion interaction parameters (ψLi+,Br–,SO42–) of lithium salt at 288.15 and 308.15 K. The Pitzer model and particle swarm optimization (PSO) were used to predict the solubilities in the ternary system at multitemperatures, and the phase diagrams of calculation and experiment are drawn accordingly. The experimental results and model predictions are in good agreement, indicating that fitted ion interaction parameters in this work of the Pitzer model have good applicability.","PeriodicalId":42,"journal":{"name":"Journal of Chemical & Engineering Data","volume":"69 11","pages":"4104–4113 4104–4113"},"PeriodicalIF":2.0,"publicationDate":"2024-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142641136","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Measurements and Thermodynamic Model on the Solid–Liquid Phase Equilibria of the Ternary System LiBr–Li2SO4–H2O at Multitemperatures 多温度下 LiBr-Li2SO4-H2O 三元体系固液相平衡的测量结果与热力学模型

IF 2.694 3区工程技术

Journal of Chemical & Engineering Data Pub Date : 2024-09-18 DOI: 10.1021/acs.jced.4c00328

Yang-Dian-Dian Wang, Shi-Hua Sang, Han-Zhong Zhang, Ling-Xuan Wang

{"title":"Measurements and Thermodynamic Model on the Solid–Liquid Phase Equilibria of the Ternary System LiBr–Li2SO4–H2O at Multitemperatures","authors":"Yang-Dian-Dian Wang, Shi-Hua Sang, Han-Zhong Zhang, Ling-Xuan Wang","doi":"10.1021/acs.jced.4c00328","DOIUrl":"https://doi.org/10.1021/acs.jced.4c00328","url":null,"abstract":"The solid–liquid phase equilibria of the ternary system LiBr–Li2SO4–H2O at 273.15, 288.15, and 308.15 K were investigated by the isothermal dissolution equilibrium method. The equilibrium solid phases were identified by X-ray powder crystal diffraction. The isothermal phase diagrams of the ternary system at different temperatures were drawn in detail. The equilibrium phase diagrams of the ternary system at 273.15, 288.15, and 308.15 K have one invariant point, two univariate curves, and two crystallization fields (corresponding to LiBr·2H2O and Li2SO4·H2O), respectively. The results show that LiBr has a strong salting-out effect on Li2SO4, and the solubilities of LiBr will be greatly improved with an increase in temperature. Furthermore, multiple linear regression and programming analysis are used to fit the single salt parameters (β(0), β(1), and Cφ) and the mixed ion interaction parameters (ψLi+,Br–,SO42–) of lithium salt at 288.15 and 308.15 K. The Pitzer model and particle swarm optimization (PSO) were used to predict the solubilities in the ternary system at multitemperatures, and the phase diagrams of calculation and experiment are drawn accordingly. The experimental results and model predictions are in good agreement, indicating that fitted ion interaction parameters in this work of the Pitzer model have good applicability.","PeriodicalId":42,"journal":{"name":"Journal of Chemical & Engineering Data","volume":"52 1","pages":""},"PeriodicalIF":2.694,"publicationDate":"2024-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142266816","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Saturated Vapor Pressure Measurements for Tetraethyl, Tetrapropyl, and Tetrabutyl Orthosilicates up to 473 K 开氏 473 度以下四乙基、四丙基和四丁基正硅酸盐饱和蒸汽压测量结果

IF 2.694 3区工程技术

Journal of Chemical & Engineering Data Pub Date : 2024-09-16 DOI: 10.1021/acs.jced.4c00325

Hiroaki Matsukawa, Katsuto Otake

{"title":"Saturated Vapor Pressure Measurements for Tetraethyl, Tetrapropyl, and Tetrabutyl Orthosilicates up to 473 K","authors":"Hiroaki Matsukawa, Katsuto Otake","doi":"10.1021/acs.jced.4c00325","DOIUrl":"https://doi.org/10.1021/acs.jced.4c00325","url":null,"abstract":"The saturated vapor pressures of tetraethyl orthosilicate (TEOS, (CH3CH2O)4Si), tetrapropyl orthosilicate (TPOS, (CH3CH2CH2O)4Si), and tetrabutyl orthosilicate (TBOS, (CH3CH2CH2CH2O)4Si) were measured at temperatures up to 473 K using an apparatus based on the general static method. The standard uncertainties (us) were us (T) = 0.029 K and us (p) = 0.015 kPa, and the maximum combined expanded uncertainties U (0.95 level of confidence) were U(T) = (0.52, 8.60, and 1.64 K) and U(psat) = (2.81, 3.09, and 0.82 kPa) for TEOS, TPOS, and TBOS, respectively. Furthermore, the saturated vapor pressure was correlated using the Antoine equation to determine its parameters. The measured saturated vapor pressures were correlated with previously reported pressure–volume-temperature data using the PC-SAFT equation of state (EoS), followed by optimizing the pure component parameters of the PC-SAFT EoS. A relationship between the molecular structure and component parameters was identified, and the occupied volumes were determined according to the Sanchez–Lacombe and PC-SAFT EoS, revealing significant differences. Our findings highlight the potential of using the molecular structure to predict pure component parameters. In addition to providing accurate vapor pressure data for these orthosilicates, this study offers insights into correlation methods, emphasizing the importance of parameter determination in equation of state modeling.","PeriodicalId":42,"journal":{"name":"Journal of Chemical & Engineering Data","volume":"32 1","pages":""},"PeriodicalIF":2.694,"publicationDate":"2024-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142266844","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Saturated Vapor Pressure Measurements for Tetraethyl, Tetrapropyl, and Tetrabutyl Orthosilicates up to 473 K 开氏 473 度以下四乙基、四丙基和四丁基正硅酸盐饱和蒸汽压测量结果

IF 2 3区工程技术

Journal of Chemical & Engineering Data Pub Date : 2024-09-16 DOI: 10.1021/acs.jced.4c0032510.1021/acs.jced.4c00325

Hiroaki Matsukawa, and , Katsuto Otake*,

{"title":"Saturated Vapor Pressure Measurements for Tetraethyl, Tetrapropyl, and Tetrabutyl Orthosilicates up to 473 K","authors":"Hiroaki Matsukawa,  and , Katsuto Otake*, ","doi":"10.1021/acs.jced.4c0032510.1021/acs.jced.4c00325","DOIUrl":"https://doi.org/10.1021/acs.jced.4c00325https://doi.org/10.1021/acs.jced.4c00325","url":null,"abstract":"The saturated vapor pressures of tetraethyl orthosilicate (TEOS, (CH3CH2O)4Si), tetrapropyl orthosilicate (TPOS, (CH3CH2CH2O)4Si), and tetrabutyl orthosilicate (TBOS, (CH3CH2CH2CH2O)4Si) were measured at temperatures up to 473 K using an apparatus based on the general static method. The standard uncertainties (us) were us (T) = 0.029 K and us (p) = 0.015 kPa, and the maximum combined expanded uncertainties U (0.95 level of confidence) were U(T) = (0.52, 8.60, and 1.64 K) and U(psat) = (2.81, 3.09, and 0.82 kPa) for TEOS, TPOS, and TBOS, respectively. Furthermore, the saturated vapor pressure was correlated using the Antoine equation to determine its parameters. The measured saturated vapor pressures were correlated with previously reported pressure–volume-temperature data using the PC-SAFT equation of state (EoS), followed by optimizing the pure component parameters of the PC-SAFT EoS. A relationship between the molecular structure and component parameters was identified, and the occupied volumes were determined according to the Sanchez–Lacombe and PC-SAFT EoS, revealing significant differences. Our findings highlight the potential of using the molecular structure to predict pure component parameters. In addition to providing accurate vapor pressure data for these orthosilicates, this study offers insights into correlation methods, emphasizing the importance of parameter determination in equation of state modeling.","PeriodicalId":42,"journal":{"name":"Journal of Chemical & Engineering Data","volume":"69 11","pages":"3783–3793 3783–3793"},"PeriodicalIF":2.0,"publicationDate":"2024-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acs.jced.4c00325","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142641135","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Physical Properties of Renewable Solvents Cyrene, Dimethylisosorbide, γ-Valerolactone, Cyclopentylmethyl Ether, and 2-Methyltetrahydrofuran 可再生溶剂芘、二甲基异山梨醇苷、γ-戊内酯、环戊基甲基醚和 2-甲基四氢呋喃的物理性质

IF 2.694 3区工程技术

Journal of Chemical & Engineering Data Pub Date : 2024-09-13 DOI: 10.1021/acs.jced.4c00259

Anuj Sharma, Deepika, Siddharth Pandey

{"title":"Physical Properties of Renewable Solvents Cyrene, Dimethylisosorbide, γ-Valerolactone, Cyclopentylmethyl Ether, and 2-Methyltetrahydrofuran","authors":"Anuj Sharma, Deepika, Siddharth Pandey","doi":"10.1021/acs.jced.4c00259","DOIUrl":"https://doi.org/10.1021/acs.jced.4c00259","url":null,"abstract":"Renewable solvents derived from biomass have been regarded as promising alternatives to conventional organic solvents. A knowledge of the physical properties is crucial to accelerate the potential applications of a solvent, especially in industrial setups. Herein, we report water miscibility, surface tension (γ), density (ρ), dynamic viscosity (η), and refractive index (nD) of five structurally different renewable solvents: cyrene, dimethylisosorbide (DMI), γ-valerolactone (GVL), cyclopentylmethyl ether (CPME), and 2-methyltetrahydrofuran (2-MeTHF). Density and dynamic viscosity are measured in the temperature range of 283.15–363.15 K and surface tension is measured in the range of 298.15–363.15 K. Water miscibility and refractive index are estimated under ambient conditions. Comparatively higher water miscibility of cyrene, DMI, and GVL hints toward the availability of a greater number of H-bonding sites. At 298.15 K, all physical properties frame similar trends, with cyrene being at the top followed by DMI and GVL with CPME and 2-MeTHF at the bottom. Entropy of surface formation (Sγ) and enthalpy of surface formation (Hγ) were estimated using temperature dependence of surface tension. Dynamic viscosity follows Arrhenius-like expression with the temperature. The role of structural organization and the strength of intermolecular forces of interactions in controlling physical properties of renewable solvents is established.","PeriodicalId":42,"journal":{"name":"Journal of Chemical & Engineering Data","volume":"20 1","pages":""},"PeriodicalIF":2.694,"publicationDate":"2024-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142266845","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Physical Properties of Renewable Solvents Cyrene, Dimethylisosorbide, γ-Valerolactone, Cyclopentylmethyl Ether, and 2-Methyltetrahydrofuran 可再生溶剂芘、二甲基异山梨醇苷、γ-戊内酯、环戊基甲基醚和 2-甲基四氢呋喃的物理性质

IF 2 3区工程技术

Journal of Chemical & Engineering Data Pub Date : 2024-09-13 DOI: 10.1021/acs.jced.4c0025910.1021/acs.jced.4c00259

Anuj Sharma, Deepika and Siddharth Pandey*,

{"title":"Physical Properties of Renewable Solvents Cyrene, Dimethylisosorbide, γ-Valerolactone, Cyclopentylmethyl Ether, and 2-Methyltetrahydrofuran","authors":"Anuj Sharma,  Deepika and Siddharth Pandey*, ","doi":"10.1021/acs.jced.4c0025910.1021/acs.jced.4c00259","DOIUrl":"https://doi.org/10.1021/acs.jced.4c00259https://doi.org/10.1021/acs.jced.4c00259","url":null,"abstract":"Renewable solvents derived from biomass have been regarded as promising alternatives to conventional organic solvents. A knowledge of the physical properties is crucial to accelerate the potential applications of a solvent, especially in industrial setups. Herein, we report water miscibility, surface tension (γ), density (ρ), dynamic viscosity (η), and refractive index (nD) of five structurally different renewable solvents: cyrene, dimethylisosorbide (DMI), γ-valerolactone (GVL), cyclopentylmethyl ether (CPME), and 2-methyltetrahydrofuran (2-MeTHF). Density and dynamic viscosity are measured in the temperature range of 283.15–363.15 K and surface tension is measured in the range of 298.15–363.15 K. Water miscibility and refractive index are estimated under ambient conditions. Comparatively higher water miscibility of cyrene, DMI, and GVL hints toward the availability of a greater number of H-bonding sites. At 298.15 K, all physical properties frame similar trends, with cyrene being at the top followed by DMI and GVL with CPME and 2-MeTHF at the bottom. Entropy of surface formation (Sγ) and enthalpy of surface formation (Hγ) were estimated using temperature dependence of surface tension. Dynamic viscosity follows Arrhenius-like expression with the temperature. The role of structural organization and the strength of intermolecular forces of interactions in controlling physical properties of renewable solvents is established.","PeriodicalId":42,"journal":{"name":"Journal of Chemical & Engineering Data","volume":"69 11","pages":"3747–3757 3747–3757"},"PeriodicalIF":2.0,"publicationDate":"2024-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142641132","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Measurement of Vapor–Liquid Equilibrium for Dichloromethane + Alkyl Sulfate-Based Ionic Liquid Systems

IF 2 3区工程技术

Journal of Chemical & Engineering Data Pub Date : 2024-09-12 DOI: 10.1021/acs.jced.4c0024010.1021/acs.jced.4c00240

Yutong Zhang, Yinge Bai*, Mengjun Wang, Shaojuan Zeng, Wei Han and Xiangping Zhang*,

{"title":"Measurement of Vapor–Liquid Equilibrium for Dichloromethane + Alkyl Sulfate-Based Ionic Liquid Systems","authors":"Yutong Zhang, Yinge Bai*, Mengjun Wang, Shaojuan Zeng, Wei Han and Xiangping Zhang*, ","doi":"10.1021/acs.jced.4c0024010.1021/acs.jced.4c00240","DOIUrl":"https://doi.org/10.1021/acs.jced.4c00240https://doi.org/10.1021/acs.jced.4c00240","url":null,"abstract":"Ionic liquids (ILs) show great potential for the treatment of dichloromethane (DCM)-containing waste gases, but currently there are limited data on the vapor–liquid equilibrium (VLE) of DCM + IL systems. This work uses headspace gas chromatography (HS-GC) to determine the isothermal VLE data of the DCM + [Epy][EtSO4] and DCM + [Emim][EtSO4] systems at 308.15 K, 313.15 K, 318.15 K, 323.15 K, and 328.15 K. The nonrandom two-liquid (NRTL) and universal quasi-chemical correlation activity coefficient (UNIQUAC) models are used to regress the VLE data. The results show that the fitting average relative deviations (ARDs) of the DCM + [Epy][EtSO4] and DCM + [Emim][EtSO4] systems to the NRTL model were 6.97% and 7.95% and the fitting ARDs to the UNIQUAC model were 6.10% and 6.28%, respectively. The fitting effects of the UNIQUAC models for both systems were better than those of the NRTL model. With the models, the calculated activity coefficients of DCM were all less than 1, indicating that the solutions exhibited negative deviations from Raoult’s law, and the nonideality of the solutions increased with increasing IL concentration.","PeriodicalId":42,"journal":{"name":"Journal of Chemical & Engineering Data","volume":"69 12","pages":"4398–4409 4398–4409"},"PeriodicalIF":2.0,"publicationDate":"2024-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142851208","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Measurement of Vapor–Liquid Equilibrium for Dichloromethane + Alkyl Sulfate-Based Ionic Liquid Systems 二氯甲烷 + 硫酸烷基离子液体体系的气液平衡测量

IF 2.694 3区工程技术

Journal of Chemical & Engineering Data Pub Date : 2024-09-12 DOI: 10.1021/acs.jced.4c00240

Yutong Zhang, Yinge Bai, Mengjun Wang, Shaojuan Zeng, Wei Han, Xiangping Zhang

{"title":"Measurement of Vapor–Liquid Equilibrium for Dichloromethane + Alkyl Sulfate-Based Ionic Liquid Systems","authors":"Yutong Zhang, Yinge Bai, Mengjun Wang, Shaojuan Zeng, Wei Han, Xiangping Zhang","doi":"10.1021/acs.jced.4c00240","DOIUrl":"https://doi.org/10.1021/acs.jced.4c00240","url":null,"abstract":"Ionic liquids (ILs) show great potential for the treatment of dichloromethane (DCM)-containing waste gases, but currently there are limited data on the vapor–liquid equilibrium (VLE) of DCM + IL systems. This work uses headspace gas chromatography (HS-GC) to determine the isothermal VLE data of the DCM + [Epy][EtSO4] and DCM + [Emim][EtSO4] systems at 308.15 K, 313.15 K, 318.15 K, 323.15 K, and 328.15 K. The nonrandom two-liquid (NRTL) and universal quasi-chemical correlation activity coefficient (UNIQUAC) models are used to regress the VLE data. The results show that the fitting average relative deviations (ARDs) of the DCM + [Epy][EtSO4] and DCM + [Emim][EtSO4] systems to the NRTL model were 6.97% and 7.95% and the fitting ARDs to the UNIQUAC model were 6.10% and 6.28%, respectively. The fitting effects of the UNIQUAC models for both systems were better than those of the NRTL model. With the models, the calculated activity coefficients of DCM were all less than 1, indicating that the solutions exhibited negative deviations from Raoult’s law, and the nonideality of the solutions increased with increasing IL concentration.","PeriodicalId":42,"journal":{"name":"Journal of Chemical & Engineering Data","volume":"35 1","pages":""},"PeriodicalIF":2.694,"publicationDate":"2024-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142266846","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0