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In Situ Raman Spectroscopic Studies on Small-Cage Occupancy of Methane in the Simple Methane and Methane + Deuterated Tetrahydrofuran Mixed Hydrates

18-Aug-2015 | Caroline T. Moryama; Takeshi Sugahara; Danilo Y. Yatabe Franco; Hiroko Mimachi, Journal of Chemical & Engineering Data, 2015

To investigate the small-cage occupancies of methane (CH4) in the structure-I and structure-II hydrates, under the three-phase equilibrium conditions of clathrate hydrate, aqueous solution, and fluid CH4 phases, in situ Raman spectra of the guest molecules in the simple CH4 hydrate and the CH4 + ...

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The Chemical Thermodynamic Models for Calculating the Solvent Activity Coefficient of Semidiluted Aqueous and Nonaqueous Polymer Solutions in Vapor–Liquid Equilibrium

13-Aug-2015 | Rahmat Sadeghi; Yasaman Shahebrahimi; Ashkan Zonnouri, Journal of Chemical & Engineering Data, 2015

New combinational models were proposed to predict the phase behavior of vapor–liquid equilibrium of some semidiluted binary polymer solutions at different temperatures. On the basis of these models in a polymer solution a chemical reaction, solvation, was considered producing a complex ...

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Solubilities, Densities, and Refractive Indices in the Salt-Water Ternary System (LiCl + LiBO2 + H2O) at T = 288.15 K and 298.15 K and p = 0.1 MPa

11-Aug-2015 | Daolin Gao; Yafei Guo; Xiaoping Yu; Shiqiang Wang; Tianlong Deng, Journal of Chemical & Engineering Data, 2015

Solubilities, densities, and refractive indices for the salt-water ternary system (LiCl + LiBO2 + H2O) at T = 288.15 K and 298.15 K and p = 0.1 MPa were determined using the isothermal dissolution equilibrium method. According to the experimental data at two temperatures, the phase diagrams and ...

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Reactive Extraction of Picolinic Acid Using Tri-n-octylamine Dissolved in Different Diluents: Effect of Solvent Polarity

07-Aug-2015 | Dipaloy Datta; Sushil Kumar, Journal of Chemical & Engineering Data, 2015

Picolinic acid is a useful intermediate for the synthesis of different pharmaceuticals, herbicides, and metal salts which is applied in the food supplements. Due to the rapid rise in the costs of fossil resources, efforts are made to synthesize this carboxylic acid from the renewable feedstock ...

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Adsorption of Pure and Binary CO2, CH4, and N2 Gas Components on Activated Carbon Beads

07-Aug-2015 | Yi-Jiang Wu; Ying Yang; Xiang-Ming Kong; Ping Li; Jian-Guo Yu; Ana M. Ribeiro; Alirio E. Rodrigues, Journal of Chemical & Engineering Data, 2015

The adsorption equilibriums of CO2, CH4, and N2 pure gases on pitch-based activated carbon beads have been studied using a magnetic suspension microbalance at (293, 303, 333, and 363) K within a pressure range of 0 kPa to 4000 kPa. It is found that experimental adsorption capacities can be ...

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Comparative Study of Sodium Phosphate and Sodium Sulfate in Aqueous Solutions at (298.15 to 353.15) K

04-Aug-2015 | Mohamed El Guendouzi; Mohammed Aboufaris, Journal of Chemical & Engineering Data, 2015

The binary and ternary aqueous solutions of sodium phosphate or/and sulfate were studied using the hygrometric method from dilution to saturation in the temperature range from (298.15 to 353.15) K. The hygrometric measurements of the binary systems were combined with reference pure water, ...

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Evaluation of Pure-Component Adsorption Properties of DD3R Based on the Langmuir and Sips Models

29-Jul-2015 | Alessio Caravella; Pasquale F. Zito; Adele Brunetti; Enrico Drioli; Giuseppe Barbieri, Journal of Chemical & Engineering Data, 2015

The pure-component adsorption properties of DD3R zeolite were evaluated for various light gases such as H2, CH4, CO2, CO, and N2 in a wide temperature range of (195–473) K. These properties, representing the macroscopic results of the microscopic zeolite–species interactions, are expressed in ...

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Effects of Na, Ca, Mg, and Al Chloride Salts on Dissolution and Phase Stability of Calcium Sulfate Dihydrate in Aqueous Solutions at 278.15 K to 308.15 K

28-Jul-2015 | Jian Sun; Lisheng Wang; Guomin Yu, Journal of Chemical & Engineering Data, 2015

Dissolution trend and solubility data of calcium sulfate dihydrate (CaSO4·2H2O gypsum) in aqueous Na, Ca, Mg, and Al chloride salt solutions have been studied at 278.15 K to 308.15 K. The concentration ranges were up to 4.5 mol·L–1 for NaCl, 3.0 mol·L–1 for MgCl2, 2.0 mol·L–1 for CaCl2, and 1.6 ...

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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 ...

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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 ...

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