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Wyszukujesz frazę "ferrocene" wg kryterium: Temat

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    Wyświetlanie 1-5 z 5
    Tytuł:
    Studies on Aluminized, High Burning Rate, Butacene® Based, Composite Propellants
    Autorzy:
    Ghosh, K.
    Behera, S.
    Kumar, A.
    Padale, B. G.
    Deshpande, D. G.
    Gupta, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/358702.pdf
    Data publikacji:
    2014
    Wydawca:
    Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego
    Tematy:
    Butacene®
    ferrocene
    pressure exponent
    Opis:
    This paper reports on a Butacene® based composite propellant with high burning rate. The effect of replacing HTPB with Butacene® on the physical, mechanical and ballistic properties, and sensitivity towards impact and friction, has been studied. The ballistic properties were evaluated as burning rates at various pressures (7-11 MPa), pressure exponents, ignition temperatures etc. As expected, a remarkable enhancement in burning rate at low pressures was observed with increasing percentage of Butacene®. Comparatively lower n-values were observed for compositions containing Butacene® than for HTPB based propellants. The sensitivity of Butacene® based compositions, in terms of impact and friction, was found to be increased with an increasing percentage of Butacene®.
    Źródło:
    Central European Journal of Energetic Materials; 2014, 11, 3; 323-333
    1733-7178
    Pojawia się w:
    Central European Journal of Energetic Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Calculation of electrochemical parameters starting from the polarization curves of ferrocene at glassy carbon electrode
    Autorzy:
    Neghmouche, N.S.
    Lanez, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/411587.pdf
    Data publikacji:
    2013
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    cyclic voltammetry
    diffusion coefficient
    ferrocene
    half-wave potential
    Randles-Sevcik equation
    Opis:
    This work is a contribution to the calculation of electrochemical parameters from the polarization curves of ferrocene. The parameters are: The anodic (Epa) and the cathodic (Epc) peak potentials, as well as the corresponding anodic (ipa) and cathodic (ipc) peak currents, were obtained at different scan rates (0.05, 0.10, 0.30, 0.50 V.s-1). The half-wave potentials (E1/2) of the couple in the investigated solvents have been evaluated. The diffusion coefficients (D) have been calculated using the Randles-Sevcik equation.
    Źródło:
    International Letters of Chemistry, Physics and Astronomy; 2013, 4; 37-45
    2299-3843
    Pojawia się w:
    International Letters of Chemistry, Physics and Astronomy
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The Effect of Hydrazide group on the oxydation of ferrocene at two different electrodes using Rotating Disk Electrode (RDE) in organic medium
    Autorzy:
    Nacer, S. N.
    Lanez, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/412271.pdf
    Data publikacji:
    2013
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Rotating Disk Electrode (RDE)
    diffusion coefficient
    ferrocene derivative
    half-wave potential
    Opis:
    Through this work we adopted Rotating Disk Electrode (RDE) Voltammetry to study the kinetics of oxidation and the effect of hydrazide group on ferrocene in organic medium. Thus, two different electrodes (Pt and Ge) were used in order to determine this latter. According to the ferrocene taken as a witness the hydrazide group related to the ferrocene made oxidation more difficult. This ferrocenic derivative showed an electrochemical stability, a reversible electrochemical system and an electronic attractor effect of these substitutional ferrocene groups. Finally, we calculated some electrochemical parameters which were: the diffusion coefficients (D), the layer thickness in addition to the electron transfer rate.
    Źródło:
    International Letters of Chemistry, Physics and Astronomy; 2013, 7, 1; 1-7
    2299-3843
    Pojawia się w:
    International Letters of Chemistry, Physics and Astronomy
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Electrochemical properties of N'-ferrocenylmethyl-N'-phenylbenzohydrazide in aqueous and organic mediums
    Autorzy:
    Nacer, S.N.
    Lanez, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/411788.pdf
    Data publikacji:
    2013
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    cyclic voltammetry
    diffusion coefficient
    ferrocene derivative
    half-wave potential
    Randles-Sevcik equation
    Opis:
    We carried out a detailed study of the kinetics of oxidation of N'-ferrocenylmethyl-N'-phenylbenzohydrazide (FcX) to ferrocenium ion (FcX+) in aqueous and organic mediums. This study using cyclic (CV) and rotating disk electrode (RDE) voltammetry showed that the FcX/FcX+ redox couple is reversible. The N'-ferrocenylmethyl-N'-phenylbenzohydrazide and ferrocenium ion diffusion coefficients (D) were calculated from these results. In addition, the electron transfer rate constant and the exchange current density for the oxidation of ferrocene were determined. A comparison of the kinetic data obtained from the two electrochemical techniques appears to show that the data from the RDE experiments are more reliable because they are collected under strict mass transport control.
    Źródło:
    International Letters of Chemistry, Physics and Astronomy; 2013, 5; 76-85
    2299-3843
    Pojawia się w:
    International Letters of Chemistry, Physics and Astronomy
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Calculation of Diffusion Coefficients for Oxidation of ferrocene derivative synthesized at two different electrodes using Rotating Disk Electrode (RDE)
    Autorzy:
    Nacer, S.N.
    Khelef, A.
    Lanez, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/411798.pdf
    Data publikacji:
    2013
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Rotating Disk Electrode (RDE)
    diffusion coefficient
    ferrocene derivative
    half-wave potential
    Randles-Sevcik equation
    Opis:
    The electrochemical behavior of N'-Ferrocenylmethyl-N'-Phenylbenzohydrazide synthesized is studied by Rotating Disk Electrode (RDE) Voltammetry to study the kinetics of oxidation and the effect of hydrazide group on ferrocene in organic medium. Thus, two different electrodes (Pt and Gc) were used in ordre to determine this latter. According to the ferrocene taken as a witness the hydrazide group related to the ferrocene made oxydation more difficult. This ferrocenic derivative showed an electrochemical stability, a reversible electrochemical system and an electronic attractor effect of these substitutional ferrocene groups. Finally, we calculated some electrochemical parameters which were: the diffusion coefficients (D), the layer thickness in addition to the electron transfer rate.
    Źródło:
    International Letters of Chemistry, Physics and Astronomy; 2013, 9, 1; 39-47
    2299-3843
    Pojawia się w:
    International Letters of Chemistry, Physics and Astronomy
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-5 z 5

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