American Journal of Physical Chemistry

Volume 7, Issue 4, December 2018

  • Refractive Indices for the Binary Mixtures of N,N-Dimethylformamide with 2-Butanol and 2-Pentanol at Temperatures 303.15 K, 313.15 K, and 323.15 K

    Aklima Jahan, Md. Ashraful Alam, Md. Ashiqur Rahman Khan, Shamim Akhtar

    Issue: Volume 7, Issue 4, December 2018
    Pages: 55-62
    Received: 8 December 2018
    Accepted: 20 December 2018
    Published: 10 January 2019
    DOI: 10.11648/j.ajpc.20180704.11
    Abstract: The refractive index values have been measured as a function of composition range at temperatures 303.15 K, 313.15 K, and 323.15 K and at ambient pressure and reported here. From these data, refractive index deviations, ΔnD, excess molar refraction, RmE, were calculated and correlated by the Redlich-Kister-type polynomial equation to derive the coe... Show More
  • An Experimental Investigation of Pristine Barite Adsorption on Sodium Oleate and Sodium Palmitate

    Nwoko Christopher Ikpe Amadi, Nkwoada Amarachi Udoka, Okoji Josephine, Opah Solomon

    Issue: Volume 7, Issue 4, December 2018
    Pages: 63-72
    Received: 15 December 2018
    Accepted: 9 January 2019
    Published: 28 January 2019
    DOI: 10.11648/j.ajpc.20180704.12
    Abstract: Characterization of the pristine barite mineral was established using a scanning electron microscope (SEM) and Fourier Transform Infra-Red (FTIR). Barite was applied for sodium oleate and sodium palmitate adsorption in aqueous solutions. Equilibrium adsorption data were fitted into two adsorption isotherms, three kinetic models and thermodynamic st... Show More