The Experts below are selected from a list of 18972 Experts worldwide ranked by ideXlab platform

Jerry L. Atwood - One of the best experts on this subject based on the ideXlab platform.

  • Liquid Liquid equilibria for toluene heptane 1 ethyl 3 methylimidazolium triiodide and toluene heptane 1 butyl 3 methylimidazolium triiodide
    Journal of Chemical & Engineering Data, 2000
    Co-Authors: Murugan S Selvan, Marvin D Mckinley, And Raymond H Dubois, Jerry L. Atwood
    Abstract:

    This study focuses on the use of an ionic Liquid for extracting an aromatic Hydrocarbon from a mixture of an aromatic and an aliphatic Hydrocarbon. Liquid−Liquid equilibrium data were collected for the toluene + heptane + 1-ethyl-3-methylimidazolium triiodide system at 45 °C and for the toluene + heptane + 1-butyl-3-methylimidazolium triiodide system at 35 °C. The nonrandom two-Liquid (NRTL) physical thermodynamic model was used to correlate the experimental data. The NRTL model was found to represent the data very well. The selectivity and capacity of the ionic Liquids for extracting toluene from toluene + heptane solutions were evaluated. The separation factors were found to be above 50 for low toluene compositions and nearly unity for high toluene compositions.

Jacob I Emert - One of the best experts on this subject based on the ideXlab platform.

  • effect of temperature on carbon black agglomeration in Hydrocarbon Liquid with adsorbed dispersant
    Langmuir, 2005
    Co-Authors: Steve P Meeker, Volker Trappe, Nancy Z Diggs, David A Weitz, Jacob I Emert
    Abstract:

    Suspensions of carbon black in oil, stabilized with adsorbed polyisobutylene succinimide (PIBSI) dispersant, are commonly used as model systems for investigating the soot-handling characteristics of motor oils. The structure of the carbon-black agglomerates changes dramatically with temperature; this results in a concomitant change in the suspension rheology. Linear and nonlinear rheological experiments indicate a large increase of the interparticle attractions as the temperature is raised. To elucidate the origin of this behavior, we investigate the effect of temperature on the stabilizing effect of the dispersant. Measurements of adsorption isotherms of the dispersant on carbon black indicate that there is little variation of the binding energy with temperature. Intrinsic viscosity measurements of PIBSI dispersants in solution clearly exhibit an inverse dependence of the dispersant chain dimension with temperature. These results suggest that the temperature-dependent changes in the chain conformation of...

  • effect of temperature on carbon black agglomeration in Hydrocarbon Liquid with adsorbed dispersant
    Langmuir, 2005
    Co-Authors: Youyeon Won, Steve P Meeker, Volker Trappe, Nancy Z Diggs, David A Weitz, Jacob I Emert
    Abstract:

    Suspensions of carbon black in oil, stabilized with adsorbed polyisobutylene succinimide (PIBSI) dispersant, are commonly used as model systems for investigating the soot-handling characteristics of motor oils. The structure of the carbon-black agglomerates changes dramatically with temperature; this results in a concomitant change in the suspension rheology. Linear and nonlinear rheological experiments indicate a large increase of the interparticle attractions as the temperature is raised. To elucidate the origin of this behavior, we investigate the effect of temperature on the stabilizing effect of the dispersant. Measurements of adsorption isotherms of the dispersant on carbon black indicate that there is little variation of the binding energy with temperature. Intrinsic viscosity measurements of PIBSI dispersants in solution clearly exhibit an inverse dependence of the dispersant chain dimension with temperature. These results suggest that the temperature-dependent changes in the chain conformation of the PIBSI dispersant are primarily responsible for the changes in the dispersion rheology, and we propose a simple model to account for these data.

Murugan S Selvan - One of the best experts on this subject based on the ideXlab platform.

  • Liquid Liquid equilibria for toluene heptane 1 ethyl 3 methylimidazolium triiodide and toluene heptane 1 butyl 3 methylimidazolium triiodide
    Journal of Chemical & Engineering Data, 2000
    Co-Authors: Murugan S Selvan, Marvin D Mckinley, And Raymond H Dubois, Jerry L. Atwood
    Abstract:

    This study focuses on the use of an ionic Liquid for extracting an aromatic Hydrocarbon from a mixture of an aromatic and an aliphatic Hydrocarbon. Liquid−Liquid equilibrium data were collected for the toluene + heptane + 1-ethyl-3-methylimidazolium triiodide system at 45 °C and for the toluene + heptane + 1-butyl-3-methylimidazolium triiodide system at 35 °C. The nonrandom two-Liquid (NRTL) physical thermodynamic model was used to correlate the experimental data. The NRTL model was found to represent the data very well. The selectivity and capacity of the ionic Liquids for extracting toluene from toluene + heptane solutions were evaluated. The separation factors were found to be above 50 for low toluene compositions and nearly unity for high toluene compositions.

Klaudia Walczak - One of the best experts on this subject based on the ideXlab platform.

  • solvent extraction of aromatic sulfur compounds from n heptane using the 1 ethyl 3 methylimidazolium tricyanomethanide ionic Liquid
    The Journal of Chemical Thermodynamics, 2013
    Co-Authors: Marek Krolikowski, Klaudia Walczak
    Abstract:

    Abstract The ionic Liquid 1-ethyl-3-methylimidazolium tricyanomethanide ([EMIM][TCM]) has been tested as a solvent for the separation of sulfur compounds from aliphatic Hydrocarbon. Liquid–Liquid phase equilibrium data have been determined for ternary systems containing the ionic Liquid, thiophene or benzothiophene and n-heptane. The influence of temperature on the separation of thiophene from n-heptane was determined. High solubility of sulfur compounds and practical immiscibility of aliphatic Hydrocarbon in ionic Liquid have been found. The values of selectivity and solute distribution ratios have been calculated for all systems and compared with literature data for other 1-ethyl-3-methylimidazolium-based ionic Liquids. High values of selectivity were obtained. The experimental data were correlated using the NRTL equation, and the binary interaction parameters have been reported. The phase equilibria diagrams for the ternary mixtures including the experimental and calculated tie-lines have been presented.

And Raymond H Dubois - One of the best experts on this subject based on the ideXlab platform.

  • Liquid Liquid equilibria for toluene heptane 1 ethyl 3 methylimidazolium triiodide and toluene heptane 1 butyl 3 methylimidazolium triiodide
    Journal of Chemical & Engineering Data, 2000
    Co-Authors: Murugan S Selvan, Marvin D Mckinley, And Raymond H Dubois, Jerry L. Atwood
    Abstract:

    This study focuses on the use of an ionic Liquid for extracting an aromatic Hydrocarbon from a mixture of an aromatic and an aliphatic Hydrocarbon. Liquid−Liquid equilibrium data were collected for the toluene + heptane + 1-ethyl-3-methylimidazolium triiodide system at 45 °C and for the toluene + heptane + 1-butyl-3-methylimidazolium triiodide system at 35 °C. The nonrandom two-Liquid (NRTL) physical thermodynamic model was used to correlate the experimental data. The NRTL model was found to represent the data very well. The selectivity and capacity of the ionic Liquids for extracting toluene from toluene + heptane solutions were evaluated. The separation factors were found to be above 50 for low toluene compositions and nearly unity for high toluene compositions.