The Experts below are selected from a list of 183 Experts worldwide ranked by ideXlab platform
M Ferriol - One of the best experts on this subject based on the ideXlab platform.
-
excess enthalpies in the binary systems water hydrazine water Methylhydrazine and water 1 1 diMethylhydrazine determination and modeling in relation to the structure of the liquid phase
Fluid Phase Equilibria, 1993Co-Authors: M Ferriol, M T Cohenadad, A Laachach, J ThoureyAbstract:Abstract Excess enthalpies of the binary mixtures of water and hydrazine, N2H4 or Methylhydrazine, CH3NHNH2 or 1,1-diMethylhydrazine, (CH3)2NNH2 are determined at 278.15 and 293.15 K. In the three cases, a chemical association model involving two hydrates (mono and tri- or tetrahydrate), a dimer for alkylhydrazine and assuming an ideal behavior of all species present, gives a good representation of the mixing properties of these mixtures.
-
solid liquid equilibria and modeling of the binary systems water Methylhydrazine and water 1 1 diMethylhydrazine
Fluid Phase Equilibria, 1993Co-Authors: M Ferriol, M Giudice, M T Cohenadad, M Foulon, Y Guinet, N Lebrun, M Mullet, J C Bureau, El T WidadiAbstract:Abstract Solid-liquid equilibria of the system water-Methylhydrazine are investigated by direct thermal analysis on heating. Three liquidus curves can be observed corresponding to ice, Methylhydrazine and a stable congruently melting Methylhydrazine monohydrate. Another metastable form of monohydrate can be observed, its transformation into the stable form being monotropic. A model deduced from the study of the water-alkylhydrazines vapor-liquid equilibria and representing strong interactions between molecules as chemical associations, allows, using the van Laar relation, to reproduce correctly all the liquidus curves. This modeling is justified by the evolution of Raman spectra of the liquid phase. The crystal structure of pure Methylhydrazine, determined at 179 K by X-ray diffraction on a single crystal, is favorable to the existence of strong interactions between Methylhydrazine molecules. The model is also used to reproduce the system water-1,1-diMethylhydrazine.
-
dielectric properties and modeling of supercooled aqueous mixtures of Methylhydrazine and 1 1 diMethylhydrazine
Fluid Phase Equilibria, 1993Co-Authors: M Ferriol, L Jorat, G Noyel, Th M Cohenadad, J R HuckAbstract:Abstract The dielectric relaxation times and static permittivity of the binary mixtures of water and Methylhydrazine, CH 3 N H N H 2 or 1,1-diMethylhydrazine (CH 3 ) 2 NNH 2 are determined in supercooled conditions down to 150K. For each system, these properties can be modeled using chemical associations of the type (H 2 O) m (RR'NNH 2 ) p and, also, self associations for pure hydrazines.
-
densities molar volumes and viscosities in the systems water hydrazine water Methylhydrazine and water 1 1 diMethylhydrazine
Fluid Phase Equilibria, 1992Co-Authors: A Laachach, M Ferriol, M T Cohenadad, J R Huck, L Jorat, G Noyel, F W Getzen, J C BureauAbstract:Abstract Laachach, A., Ferriol, M., Cohen-Adad, M.T., Huck, J., Jorat, L., Noyel, G., Getzen, F.W. and Bureau J.C., 1992. Densities, molar volumes and viscosities in the systems water-hydrazine, water-Methylhydrazine and water-1,1-diMethylhydrazine. Fluid Phase Equilibria, 71: 301-312. The densities, molar volumes and viscosities of the binary mixtures water and hydrazine, N2H4, or Methylhydrazine, CH3NHNH2, or 1,1-diMethylhydrazine, (CH3)2NNH2, are determined between 248.15 and 293.15 K. For each system, the evolution of these properties as a function of the composition of the liquid phase is described by a chemical association model involving associated species of the type (H2O)m(RR'NNH2)p and, also, self associations for pure hydrazines.
M T Cohenadad - One of the best experts on this subject based on the ideXlab platform.
-
structure of the stable phase of Methylhydrazine first observations of phase transitions
Acta Crystallographica Section B-structural Science, 1994Co-Authors: M Foulon, N Lebrun, M Muller, A Amazzal, M T CohenadadAbstract:A study of Methylhydrazine, CH 3 NHNH 2 , has provided the following data: monoclinic system, P2 1 /c, a=10.043(10), b=3.925(5), c=7.670(8) A, β=107.28(10) o , V=288.7(1.1) A 3 , Z=4, M r =46.07, D x =1.06 g cm -3 , λ(Mo Ka)=0.7107 A, μ=0.81 cm -1 , F(000)=104, T=179 K, R=0.039 for 703 reflexions [I≥3σ(I)]. A single crystal was grown in situ from the liquid by an adapted Bridgman method. The crystallographic cell contains equimolar proportions of isomers with the outer conformation
-
excess enthalpies in the binary systems water hydrazine water Methylhydrazine and water 1 1 diMethylhydrazine determination and modeling in relation to the structure of the liquid phase
Fluid Phase Equilibria, 1993Co-Authors: M Ferriol, M T Cohenadad, A Laachach, J ThoureyAbstract:Abstract Excess enthalpies of the binary mixtures of water and hydrazine, N2H4 or Methylhydrazine, CH3NHNH2 or 1,1-diMethylhydrazine, (CH3)2NNH2 are determined at 278.15 and 293.15 K. In the three cases, a chemical association model involving two hydrates (mono and tri- or tetrahydrate), a dimer for alkylhydrazine and assuming an ideal behavior of all species present, gives a good representation of the mixing properties of these mixtures.
-
solid liquid equilibria and modeling of the binary systems water Methylhydrazine and water 1 1 diMethylhydrazine
Fluid Phase Equilibria, 1993Co-Authors: M Ferriol, M Giudice, M T Cohenadad, M Foulon, Y Guinet, N Lebrun, M Mullet, J C Bureau, El T WidadiAbstract:Abstract Solid-liquid equilibria of the system water-Methylhydrazine are investigated by direct thermal analysis on heating. Three liquidus curves can be observed corresponding to ice, Methylhydrazine and a stable congruently melting Methylhydrazine monohydrate. Another metastable form of monohydrate can be observed, its transformation into the stable form being monotropic. A model deduced from the study of the water-alkylhydrazines vapor-liquid equilibria and representing strong interactions between molecules as chemical associations, allows, using the van Laar relation, to reproduce correctly all the liquidus curves. This modeling is justified by the evolution of Raman spectra of the liquid phase. The crystal structure of pure Methylhydrazine, determined at 179 K by X-ray diffraction on a single crystal, is favorable to the existence of strong interactions between Methylhydrazine molecules. The model is also used to reproduce the system water-1,1-diMethylhydrazine.
-
densities molar volumes and viscosities in the systems water hydrazine water Methylhydrazine and water 1 1 diMethylhydrazine
Fluid Phase Equilibria, 1992Co-Authors: A Laachach, M Ferriol, M T Cohenadad, J R Huck, L Jorat, G Noyel, F W Getzen, J C BureauAbstract:Abstract Laachach, A., Ferriol, M., Cohen-Adad, M.T., Huck, J., Jorat, L., Noyel, G., Getzen, F.W. and Bureau J.C., 1992. Densities, molar volumes and viscosities in the systems water-hydrazine, water-Methylhydrazine and water-1,1-diMethylhydrazine. Fluid Phase Equilibria, 71: 301-312. The densities, molar volumes and viscosities of the binary mixtures water and hydrazine, N2H4, or Methylhydrazine, CH3NHNH2, or 1,1-diMethylhydrazine, (CH3)2NNH2, are determined between 248.15 and 293.15 K. For each system, the evolution of these properties as a function of the composition of the liquid phase is described by a chemical association model involving associated species of the type (H2O)m(RR'NNH2)p and, also, self associations for pure hydrazines.
J C Bureau - One of the best experts on this subject based on the ideXlab platform.
-
solid liquid equilibria and modeling of the binary systems water Methylhydrazine and water 1 1 diMethylhydrazine
Fluid Phase Equilibria, 1993Co-Authors: M Ferriol, M Giudice, M T Cohenadad, M Foulon, Y Guinet, N Lebrun, M Mullet, J C Bureau, El T WidadiAbstract:Abstract Solid-liquid equilibria of the system water-Methylhydrazine are investigated by direct thermal analysis on heating. Three liquidus curves can be observed corresponding to ice, Methylhydrazine and a stable congruently melting Methylhydrazine monohydrate. Another metastable form of monohydrate can be observed, its transformation into the stable form being monotropic. A model deduced from the study of the water-alkylhydrazines vapor-liquid equilibria and representing strong interactions between molecules as chemical associations, allows, using the van Laar relation, to reproduce correctly all the liquidus curves. This modeling is justified by the evolution of Raman spectra of the liquid phase. The crystal structure of pure Methylhydrazine, determined at 179 K by X-ray diffraction on a single crystal, is favorable to the existence of strong interactions between Methylhydrazine molecules. The model is also used to reproduce the system water-1,1-diMethylhydrazine.
-
densities molar volumes and viscosities in the systems water hydrazine water Methylhydrazine and water 1 1 diMethylhydrazine
Fluid Phase Equilibria, 1992Co-Authors: A Laachach, M Ferriol, M T Cohenadad, J R Huck, L Jorat, G Noyel, F W Getzen, J C BureauAbstract:Abstract Laachach, A., Ferriol, M., Cohen-Adad, M.T., Huck, J., Jorat, L., Noyel, G., Getzen, F.W. and Bureau J.C., 1992. Densities, molar volumes and viscosities in the systems water-hydrazine, water-Methylhydrazine and water-1,1-diMethylhydrazine. Fluid Phase Equilibria, 71: 301-312. The densities, molar volumes and viscosities of the binary mixtures water and hydrazine, N2H4, or Methylhydrazine, CH3NHNH2, or 1,1-diMethylhydrazine, (CH3)2NNH2, are determined between 248.15 and 293.15 K. For each system, the evolution of these properties as a function of the composition of the liquid phase is described by a chemical association model involving associated species of the type (H2O)m(RR'NNH2)p and, also, self associations for pure hydrazines.
A Laachach - One of the best experts on this subject based on the ideXlab platform.
-
excess enthalpies in the binary systems water hydrazine water Methylhydrazine and water 1 1 diMethylhydrazine determination and modeling in relation to the structure of the liquid phase
Fluid Phase Equilibria, 1993Co-Authors: M Ferriol, M T Cohenadad, A Laachach, J ThoureyAbstract:Abstract Excess enthalpies of the binary mixtures of water and hydrazine, N2H4 or Methylhydrazine, CH3NHNH2 or 1,1-diMethylhydrazine, (CH3)2NNH2 are determined at 278.15 and 293.15 K. In the three cases, a chemical association model involving two hydrates (mono and tri- or tetrahydrate), a dimer for alkylhydrazine and assuming an ideal behavior of all species present, gives a good representation of the mixing properties of these mixtures.
-
densities molar volumes and viscosities in the systems water hydrazine water Methylhydrazine and water 1 1 diMethylhydrazine
Fluid Phase Equilibria, 1992Co-Authors: A Laachach, M Ferriol, M T Cohenadad, J R Huck, L Jorat, G Noyel, F W Getzen, J C BureauAbstract:Abstract Laachach, A., Ferriol, M., Cohen-Adad, M.T., Huck, J., Jorat, L., Noyel, G., Getzen, F.W. and Bureau J.C., 1992. Densities, molar volumes and viscosities in the systems water-hydrazine, water-Methylhydrazine and water-1,1-diMethylhydrazine. Fluid Phase Equilibria, 71: 301-312. The densities, molar volumes and viscosities of the binary mixtures water and hydrazine, N2H4, or Methylhydrazine, CH3NHNH2, or 1,1-diMethylhydrazine, (CH3)2NNH2, are determined between 248.15 and 293.15 K. For each system, the evolution of these properties as a function of the composition of the liquid phase is described by a chemical association model involving associated species of the type (H2O)m(RR'NNH2)p and, also, self associations for pure hydrazines.
J R Huck - One of the best experts on this subject based on the ideXlab platform.
-
dielectric properties and modeling of supercooled aqueous mixtures of Methylhydrazine and 1 1 diMethylhydrazine
Fluid Phase Equilibria, 1993Co-Authors: M Ferriol, L Jorat, G Noyel, Th M Cohenadad, J R HuckAbstract:Abstract The dielectric relaxation times and static permittivity of the binary mixtures of water and Methylhydrazine, CH 3 N H N H 2 or 1,1-diMethylhydrazine (CH 3 ) 2 NNH 2 are determined in supercooled conditions down to 150K. For each system, these properties can be modeled using chemical associations of the type (H 2 O) m (RR'NNH 2 ) p and, also, self associations for pure hydrazines.
-
densities molar volumes and viscosities in the systems water hydrazine water Methylhydrazine and water 1 1 diMethylhydrazine
Fluid Phase Equilibria, 1992Co-Authors: A Laachach, M Ferriol, M T Cohenadad, J R Huck, L Jorat, G Noyel, F W Getzen, J C BureauAbstract:Abstract Laachach, A., Ferriol, M., Cohen-Adad, M.T., Huck, J., Jorat, L., Noyel, G., Getzen, F.W. and Bureau J.C., 1992. Densities, molar volumes and viscosities in the systems water-hydrazine, water-Methylhydrazine and water-1,1-diMethylhydrazine. Fluid Phase Equilibria, 71: 301-312. The densities, molar volumes and viscosities of the binary mixtures water and hydrazine, N2H4, or Methylhydrazine, CH3NHNH2, or 1,1-diMethylhydrazine, (CH3)2NNH2, are determined between 248.15 and 293.15 K. For each system, the evolution of these properties as a function of the composition of the liquid phase is described by a chemical association model involving associated species of the type (H2O)m(RR'NNH2)p and, also, self associations for pure hydrazines.