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Volumetric and viscometric properties of aqueous 1,2-dimethylethylenediamine solution for carbon capture application

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Petroleum 2024年第2期10卷 326-337页

作者： Hossein Haghani Teerawat Sema Pipat Na Ranong Thanthip Kiattinirachara Benjapon Chalermsinsuwan Hongxia Gao Zhiwu Liang Paitoon Tontiwachwuthikul Department of Chemical Technology Faculty of ScienceChulalongkorn UniversityBangkok10330Thailand Center of Excellence on Petrochemical and Materials Technology Chulalongkorn UniversityBangkok10330Thailand Department of Chemical Engineering Faculty of EngineeringMahidol UniversityNakhon Pathom73170Thailand Joint International Center for CO_(2)Capture and Storage(iCCS) Provincial Hunan Key Laboratory for Cost-effective Utilization of Fossil Fuel Aimed at Reducing CO_(2)EmissionsCollege of Chemistry and Chemical EngineeringHunan UniversityChangsha410082PR China Clean Energy Technologies Research Institute(CETRi) Faculty of Engineering and Applied ScienceUniversity of ReginaSKS4S0A2Canada

The present work investigates the volumetric and viscometric properties of an aqueous solution of 1,2-dimethylethylenediamine(DEEDA)over an entire concentration range and an absorber operating temperature range of 313.15K-333.15K at atmospheric *** investigated volumetric properties included the density,excess molar volume,partial molar volume,and the investigated viscometric properties included the viscosity,viscosity deviation,free energy for activation of viscous flow,excess free energy for activation of viscous flow,and excess entropy for activation of viscous *** results indicated that there are strong intermolecular interactions and suitable molecular packing in the binary DEEDA-water ***,the mixture was found to deviate from a real mixture according to the calculated excess *** DEEDA solvent's preliminary volumetric and viscometric properties revealed convincing potential as a novel amine for carbon ***,the Redlich-Kister-based correlations showed favorable correlative performance for excess molar volume,viscosity deviation,and excess entropy for activation of viscous flow.

关键词： Density Viscosity excess property Amine Carbon capture

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excess properties and spectroscopic studies for binary system polyethylene glycol 600 + dimethyl sulfoxide at T =(298.15, 303.15,308.15, 313.15, and 318.15) K

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Chinese Journal of Chemical Engineering 2017年第9期25卷 1249-1255页

作者： Liang Ma Feng Sha Xianshu Qiao Qiang Li Jianbin Zhang College of Chemical Engineering Inner Mongolia University of Technology

The work presents density(ρ) and viscosity(η) data of binary system polyethylene glycol 600(PEG) + dimethyl sulfoxide(DMSO) over the entire concentration range at T =(298.15, 303.15, 308.15, 313.15 and 318.15) K and atmospheric pressure. On the basis of density and viscosity values, the excess properties of PEG(1) + DMSO(2) mixtures, including excess molar volume(V_m^E), viscosity deviation(Δη), excess free energies of activation(ΔG^(*E)), and isobaric thermal expansion coefficient(αp), were calculated. At the same time, in order to conjecture the density viscosity under different conditions, the density and viscosity data were fitted with the corresponding formula. The calculated results of V_m^E, Δη, and ΔG^(*E) were fitted with the Redlich–Kister equation to derive coefficients and estimate the standard deviations(σ) between the experimental and calculated values. Moreover, the intermolecular interaction of PEG with DMSO was discussed on the basis of FTIR and UV–Vis spectral results of PEG(1) + DMSO(2) mixtures. The results indicated that there were the hydrogen bonding and interactions of hydroxyl hydrogen atoms in PEG with oxygen atoms in DMSO.

关键词： Density Viscosity excess property PEG600 Dimethyl sulfoxide

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Densities and surface tensions of ionic liquids/sulfuric acid binary mixtures

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Chinese Journal of Chemical Engineering 2018年第7期26卷 1513-1521页

作者： Tao Zhang Jing Hu Shengwei Tang Multi-phase Mass Transfer and Reaction Engineering Lab School of Chemical Engineering Sichuan University

The densities and surface tensions of [Bmim][TFO]/H2SO4, [Hmim][TFO]/H2SO4 and [Omim][TFO]/H2SO4 binary mixtures were measured by pycnometer and Wilhelmy plate method respectively. The results show that densities and surface tensions of the mixtures decreased monotonously with increasing temperatures and increasing ionic liquid （IL） molar fraction. IL with longer alkyl side-chain length brings a lower density and a smaller surface tension to the ILs/H2SO4 binary mixtures. The densities and surface tensions of the mixtures are fitted well by Jouyban-Acree （JAM） model and LWW model respectively. Redlich-Kister （R-K）equation and modified Redlich-Kister （R-K） equation describe the excess molar volumes and excess surface tensions of the mixtures well respectively. Adding a small amount of ILs （XIL 〈 0.1 ） into sulfuric acid brings an obvious decrease to the density and the surface tension. The results imply that the densities and surface tensions of IL5/H2SO4 binary mixtures can be modulated by changing the IL dosage or tailoring the IL structure.

关键词： Ionic liquid Sulfuric acid Density Surface tension excess property

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