Influence cattails [14.5% Ni(Al2O3)] and pressures to exchange thermodynamics properties hydrate hydrazine


M. Safarov1, H. Zoirov1, S. Tagoev1, S. Najmiddinov1, M. Zaripova1 and T. Tilloeva1

1Tajik Technical University after named by ac. M.S.Osimi, Tajikistan

Keywords: isochoric heat capacity, temperature, adiabatic calorimeter
property: density, isobaric heat capacity, temperature conductivity
material: cattails [14.5% Ni(Al2O3)]

Thermodynamics properties (density, isobaric heat capacity, temperature conductivity) of liquid hydrate hydrazine have been calculated using grid algorithm based on speed of sound data obtained in a previous study over a wide range of temperature and pressures [1-3]. As additional information required for these calculation, we used the most reliable literature data of densities and isobaric heat capacity at atmospheric pressure and those obtained by us on the basis of structure – property correlation in the homologous series of cattails [14.5% Ni(Al2O3)] + hydrate hydrazine. Detailed tables containing values of sound speed density, isobaric, and isochoric heat capacities, isobaric expansion coefficient, isothermal compressibility, enthalpy, and entropy, Gibbs energy, Helmholtz energy in the range of temperatures from 298 to 473 K and at pressures 0.101-49.1MPa have been developed. The density values obtained in the above–identified range of parameters were fitted with a Tait equation. The thermodynamic properties for study’s objects in the investigated temperature range at pressures exceeding atmospheric pressure have been obtained for the first time. In the frame of our studies on the excess thermodynamic (G, H, V, Cp) of mixtures containing natural compounds, we have started a similar investigation on cattails [14.5% Ni(Al2O3)] + hydrate hydrazine [4]. A newly designate calorimetric technique and calculation procedure have been used to obtain excess enthalpies, HE, from of solution. The heat capacity of substance is not only one of most important thermo physical properties, but also is characteristic of the structure of a substance. Some models of thermodynamic properties F= (pe, pg, ps ) along the coexistence curve (CC) have been considered in the work. We used an adiabatic calorimeter to measure molar heat capacities at constant volume (Cv) for cattails [14.5% Ni(Al2O3)] + hydrate hydrazine. Experimental investigations of the density and isochoric heat capacity liquids in the hydrazine hydrate of temperatures from 298 to 473 K and at pressures 0.101-49.1MPa.For study isochoric heat capacity made with a high-temperature adiabatic calorimeter. For the description of some of the thermo-dynamic properties of the systems hydrazine hydrate –x=0.1,0.2,0.3,0.4 g [14.5% Ni(Al2O3)] [5].

References
  1. Safarov M.M. Juraev D.S. Usroystvo dlya opredelenia temperaturoprovodnosti pri komnatnoy temperature I atmosfernom davlenii putyom lazernoy vspishki. Patent of Republic of Tajikistan.№ ТJ 230,31.03.2009. 4p

  2. M.A.Zaripova, A.B.Badalov, M.M.Safarov. Teplofizicheskie i termodinamicheskie svoystva vodnikh rastvorov gidrazina I fenilgidrazina. – Dushanbe-2007, pp. 11-22

  3. N.V.Korovin. Gidrazin.- M: Himiya, 1980, pp. 100-150

  4. A.P.Grekov, V.Ya. Veselov. Fizicheskaya himiya gidrazina. –Kiev: Naukova dumka, 1979, pp. 100-120

  5. Daniela S. Gaal, Peter S. Gaal. Proceedings of the Thirtieth International Thermal Conductivity Conference. Pittsburg, Pennsylvania, USA, August 29-September 2, 2009, pp. 841-846

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