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1.023 Aktuelle Fachpublikationen zum Thema temperature

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Solubility of 3,3′-(Oxidi-2,1-ethanediyl)bis[1-methyl-imidazolium] Dihexafluorophosphate in Water, Methanol, Ethanol, Acetone, and Acetonitrile and Binary Mixtures (Water + DMF) from (283.00 to 323.00) K

20.02.2015 | Jia-rong Guo; Bin Xu; Yan Wang; Ling-hua Zhuang; Guo-wei Wang, Journal of Chemical & Engineering Data, 2015

3,3′-(Oxidi-2,1-ethanediyl)bis[1-methyl-imidazolium] dihexafluorophosphate ([C4O(mim)2][PF6]2) was synthesized and confirmed with 1H NMR and FT-IR. The thermal stability of [C4O(mim)2][PF6]2 was studied with differential scanning calorimetry and thermogravimetric analyses. Using the dynamic ...

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Modified Correlations for Adsorption Isotherms

19.02.2015 | Fares D. Alsewailem, Journal of Chemical & Engineering Data, 2015

In this research, new correlations for adsorption were developed. Classical adsorption isotherm models such as Freundlich, Langmuir, and Redlich–Peterson were modified to account for the effect of temperature by utilizing a superposition shift factor. The new correlations contain two independent ...

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Temperature-Dependent Physicochemical Properties and Solvation Thermodynamics of Nitrotoluenes from Solvation Free Energies

23.12.2014 | Alauddin Ahmed; Stanley I. Sandler, Journal of Chemical & Engineering Data, 2014

Expanded ensemble molecular dynamics simulations are used to calculate the free energies of hydration and self-solvation of low polarity nitrotoluenes over the temperature range of 273 K to 330 K. From this information the liquid, subcooled, and solid-phase vapor pressures, solubilities, Henry’s ...

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Solubility of Diosgenin in Several Imidazolium-Based Ionic Liquids

22.12.2014 | Li Ge; Liangchi Guo; Kedi Yang; Kejia Tao; Jing Su; Yunfei Long, Journal of Chemical & Engineering Data, 2014

The solubility of diosgenin in four pure imidazolium-based ionic liquids, including [C4mim]NO3 (1-butyl-3-methylimidazolium nitrate), [C2mim]NTf2 (1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide), [C4mim]NTf2 (1-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide), and ...

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A Thermodynamic Model for the Solubility Prediction of Barite, Calcite, Gypsum, and Anhydrite, and the Association Constant Estimation of CaSO4(0) Ion Pair up to 250 °C and 22000 psi

19.12.2014 | Zhaoyi Dai; Amy Kan; Fangfu Zhang; Mason Tomson, Journal of Chemical & Engineering Data, 2014

Mineral solubility predictions are critical for estimating scaling risks at conditions of high temperature, pressure, and ionic strength (IS) in mixed electrolytes which occur in various industrial processes. On the basis of the Pitzer theory, this study establishes a thermodynamic model to ...

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Preparation of a Novel Supported Selenium Nanoparticles Adsorbent and Its Application for Copper Removal from Aqueous Solution

16.12.2014 | Lingyan Huang; Xing Tong; Yunzhi Li; Jiuwei Teng; Yan Bai, Journal of Chemical & Engineering Data, 2014

A novel supported nanoadsorbent (nanoSe0-supported/cotton) was prepared by loading selenium nanoparticles with sucrose on absorbent cotton. The feasibility of using nanoSe0-supported/cotton to remove Cu from aqueous solution has been confirmed in batch and continuous systems. Effective ...

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Measurement and Correlation of the Solubility of Penicillin V Potassium in Ethanol + Water and 1-Butyl Alcohol + Water Systems

15.12.2014 | Tingting Wei; Chen Wang; Shichao Du; Songgu Wu; Jianyu Li; Junbo Gong, Journal of Chemical & Engineering Data, 2014

The solubility of penicillin V potassium (PVK) in binary ethanol + water and 1-butyl alcohol + water solvent mixtures was measured at temperatures ranging from (278.15 to 313.15) K. The solubility in ethanol + water was measured by a static analytical method while in 1-butyl alcohol + water a ...

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Interactions of Saccharides in Aqueous Glycine and Leucine Solutions at Different Temperatures of (293.15 to 313.15) K: A Viscometric Study

12.12.2014 | Kuldeep Kumar; Baljeet Singh Patial; Suvarcha Chauhan, Journal of Chemical & Engineering Data, 2014

The results of viscosity measurements of ribose, maltose, and raffinose at molalities ranging from (0.050 to 0.100) mol·kg–1 in aqueous solutions of glycine and leucine of (0.025, 0.050, and 0.100) mol·kg–1, respectively, over a wide temperature range of (293.15 to 313.15) K, have been reported. ...

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Effect of Hydrogen-to-Methane Concentration Ratio on the Phase Equilibria of Quaternary Hydrate Systems

12.12.2014 | M. Naveed Khan; Laura J. Rovetto; Cor J. Peters; E. Dendy Sloan; Amadeu K. Sum; Carolyn A. Koh, Journal of Chemical & Engineering Data, 2014

Clathrate hydrates of hydrogen are of specific interest due to their potential ability to store molecular hydrogen. In particular, structure H (sH) hydrate has a higher theoretical storage capacity in comparison with the other two more common hydrate structures (sI and sII). This paper ...

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Solubility, Metastable Zone Width, and Nucleation Kinetics of Sodium Dichromate Dihydrate

12.12.2014 | Liping Wang; Haitao Feng; Jiaoyu Peng; Naijin Dong; Wu Li; Yaping Dong, Journal of Chemical & Engineering Data, 2014

The experiment data on the solubility and metastable zone width (MSZW) of sodium dichromate dihydrate have been determined in the temperature range from (290.45 to 319.76) K using the conventional polythermal method by turbidity monitoring technique. Based on the solubility data, the dissolution ...

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