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Transfer Properties of Glycylglycine from Water to Aqueous NaNO3, NaClO4, and Na2SO4 Solutions

24-Jul-2015 | Chunli Liu; Li Zhou; Liqun Fan; Chonggui Ren, Journal of Chemical & Engineering Data, 2015

Enthalpies of solution and densities of glycylglycine in aqueous solutions of NaNO3, NaClO4, and Na2SO4 were measured at 298.15 K. Standard transfer enthalpies (ΔtrH0), standard transfer partial molar volume (ΔtrVϕ0), and hydration numbers (Nh) have been determined for glycylglycine. All of the ...


Preparation and Cationic Dye Adsorption of Novel Fe3O4 Supermagnetic/Thiacalix[4]arene Tetrasulfonate Self-Doped/Polyaniline Nanocomposite: Kinetics, Isotherms, and Thermodynamic Study

22-Jul-2015 | Moslem Mansour Lakouraj; Rafieh-Sadat Norouzian; Soheila Balo, Journal of Chemical & Engineering Data, 2015

In this study, a novel magnetically separable nanoadsorbent, namely, Fe3O4@PAmABAmPD-TCAS consisting of a magnetite core and conductive terpolymer of aniline/m-aminobenzoicacid/m-phenilendiamine shell which was self-doped by protonic acid of thiacalixarene tetrasulfonate pendent groups has been ...


Determination and Correlation of Solubility of N-tert-Butylacrylamide in Seven Different Solvents at Temperatures between (279.15 and 353.15) K

06-Jul-2015 | Xu Gao; Wei-Lan Xue; Zuo-Xiang Zeng; Xin-ran Fan, Journal of Chemical & Engineering Data, 2015

The solubility data of N-tert-butylacrylamide (TBA) in the ethyl acetate, ethanol,dichloromethane, water, formamide, N,N-dimethylformamide (DMF), and N,N-dimethylacetamide (DMAC) at temperatures ranging from (279.15 to 353.15) K were measured by synthetic method. The experimental data were ...


Sugaring-Out Effects of Sucrose and Glucose on the Liquid–Liquid Equilibria for the (Water + Acetone + 1-Butanol + Ethanol) System

02-Jul-2015 | Shaoqu Xie; Suwen Zhang; Xueqing Qiu; Conghua Yi; Yun Hu; Fuhang Li; Jinhua Quan, Journal of Chemical & Engineering Data, 2015

Sugaring-out effects of sucrose and glucose on the liquid–liquid equilibria for the (acetone +1-butanol + ethanol) (ABE) solution are reported. The water content in the upper phase under sugar-free condition decreased from 60.00 wt % to 14.31 wt % and 16.72 wt % after the sugaring-out process ...


Water Activity Measurements by the Isopiestic Method for the MCl–CaCl2–H2O (M = Na, K) Systems at 323.15 K

30-Jun-2015 | Haijun Han; Lijiang Guo; Dongdong Li; Ouyang Dong; Yan Yao; Ning Zhang; Dewen Zeng, Journal of Chemical & Engineering Data, 2015

In this work, the water activities of the NaCl–CaCl2–H2O and KCl–CaCl2–H2O ternary systems and of their sub-binary systems NaCl–H2O and KCl–H2O were measured using an isopiestic method at 323.15 K. The isopiestic composition line for the NaCl–CaCl2–H2O system was found to obey the Zdanovskii rule ...


Measurement of CO2 Solubility in NaCl Brine Solutions at Different Temperatures and Pressures Using the Potentiometric Titration Method

24-Jun-2015 | Erfan Mohammadian; Hossein Hamidi; Mohammad Assadullah; Amin Azdarpour; Shervin Motamedi; Radzuan Junin, Journal of Chemical & Engineering Data, 2015

The solubility of CO2 in brine is one of the trapping mechanisms by which the CO2 is sequestrated in aquifers. In this research, an unconventional method, called the potentiometric titration, was used to obtain the solubility of CO2 in distilled water and NaCl brine. The solubility data for the ...


Solubility of Hydrogen Sulfide in Aqueous Blends of 2-Amino-2-methyl-1-propanol and N-Methyldiethanoleamine: Experimental Measurement and Modeling

24-Jun-2015 | Mohammad Shokouhi; Hamidreza Bozorgzade; Parisa Sattari, Journal of Chemical & Engineering Data, 2015

The solubility of H2S in aqueous solutions of 40 mass % MDEA + 5 mass % AMP, 30 mass % MDEA + 15 mass % AMP, and 22.5 mass % MDEA + 22.5 mass % AMP at (313.15, 333.15, and 353.15) K and pressure from the vapor pressure of the solutions up to 1.5 MPa using the isochoric saturation method were ...


Solubility and Solution Thermodynamics of Gibberellin A4 in Different Organic Solvents from 278.15 K to 333.15 K

23-Jun-2015 | Gang Wu; Yonghong Hu; Pengfei Gu; Wenge Yang; Zhiwen Ding; Chunxiao Wang; Yonggen Qian, Journal of Chemical & Engineering Data, 2015

Data on corresponding solid–liquid equilibrium of Gibberellin A4 (GA4) in different solvents is essential for a preliminary study of industrial applications. In this paper, the solid–liquid equilibrium of GA4 in water, methanol, ethanol, isopropanol, 1-butanol, acetonitrile, acetone, and ethyl ...


Standard Volumetric Properties of Tetra-N-ethylglycoluril (Bicaret) in Ordinary and Heavy Water at Temperatures from (278.15 to 318.15) K and Ambient Pressure

22-Jun-2015 | Evgeniy V. Ivanov; Elena Yu. Lebedeva; Vladimir K. Abrosimov, Journal of Chemical & Engineering Data, 2015

The densities of solutions of bicaret (2,4,6,8-tetraethyl-2,4,6,8-tatraazabicyclo[3.3.0]octane-3,7-dione or tetra-N-ethylglycoluril) in ordinary (H2O) and heavy (D2O) water were measured using the Anton Paar DMA 5000 M high-precision vibrating tube densimeter. All experiments were carried out ...


(Solid + Liquid) Phase Equilibrium in the Aqueous Ternary System NaH2PO4 + CO(NH2)2 + H2O at (308.15, 328.15, and 348.15) K

19-Jun-2015 | Yang Xiao; Jun-lin Su; Haitao Cao, Journal of Chemical & Engineering Data, 2015

In this study, the solubility of the ternary system (NaH2PO4 + CO(NH2)2 + H2O) at (308.15, 328.15, and 348.15) K were determined, using isothermal solution saturation. The equilibrium solid phases were analyzed by the Schreinemaker’s method of wet residues and verified by X-ray diffraction (XRD). ...


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