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Wyszukujesz frazę "Pandey, P. K." wg kryterium: Autor

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    Wyświetlanie 1-5 z 5
    Tytuł:
    Assay of the thermally stable, insensitive, high explosive 1,3,5-triamino-2,4,6-trinitrobenzene (TATB)
    Autorzy:
    Nandi, A. K.
    Thirupathi, N.
    Mandal, A. K.
    Pandey, P. K.
    Powiązania:
    https://bibliotekanauki.pl/articles/358608.pdf
    Data publikacji:
    2014
    Wydawca:
    Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego
    Tematy:
    assay TATB
    acid-base titration
    base hydrolysis
    trinitrophloroglucinol
    ammonium chloride
    Opis:
    An aqueous titration method is described to assay the insensitive, high explosive 1,3,5-triamino-2,4,6-trinitrobenzene (TATB). TATB is initially quantitatively converted to the weak acid 1,3,5-trihydroxy-2,4,6-trinitrobenzene (THTNB) by base catalysed hydrolysis. Subsequently THTNB is assayed by acidbase titration. TATB samples obtained from regular batch operations are assayed by this method, and the results are compared with those obtained by the total amino functional group estimation method using a modified Kjeldhal apparatus. The method is simple and has good accuracy and precision.
    Źródło:
    Central European Journal of Energetic Materials; 2014, 11, 2; 295-305
    1733-7178
    Pojawia się w:
    Central European Journal of Energetic Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Assay of the Insensitive High Explosive FOX-7 by Non-Aqueous Titration
    Autorzy:
    Nandi, A. K.
    Paramasivan, P.
    Singh, S. K.
    Mandal, A. K.
    Pandey, R. K.
    Powiązania:
    https://bibliotekanauki.pl/articles/358156.pdf
    Data publikacji:
    2012
    Wydawca:
    Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego
    Tematy:
    1,1-diamino-2,2-dinitroethene
    FOX-7
    non-aqueous titration
    N,N-dimethylformamide
    Opis:
    A non-aqueous titration method was developed to assay the insensitive high explosive 1,1-diamino-2, 2-dinitroethene (FOX-7). The weak acidic nature of FOX-7 (pKa 10.6) was exploited in the assay method. The sample was dissolved in the protophilic solvent N, N-dimethylformamide and titrated against sodium methoxide solution in benzene/methanol using azo violet as indicator. FOX-7 samples obtained from regular batch operations were assayed by this method and the results were compared with that of a recrystallized sample. The method is simple, rapid and has good accuracy and precision.
    Źródło:
    Central European Journal of Energetic Materials; 2012, 9, 4; 343-352
    1733-7178
    Pojawia się w:
    Central European Journal of Energetic Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Preparation and characterization of ultrafine RDX
    Autorzy:
    Pant, A.
    Nandi, A. K.
    Newale, S. P.
    Gajbhiye, V. P.
    Prasanth, H.
    Pandey, R. K.
    Powiązania:
    https://bibliotekanauki.pl/articles/358126.pdf
    Data publikacji:
    2013
    Wydawca:
    Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego
    Tematy:
    ultrafine RDX
    drowning-out crystallization
    BET surface area
    SEM
    mechanical and electrostatic spark sensitivity
    Opis:
    This paper describes the synthesis of ultrafine Hexogen (UF-RDX) of size <5μm by drowning-out crystallization. RDX was precipitated from acetone or dimethylformamide (DMF) solution by reducing the solvent power using either a miscible, non-aqueous antisolvent, n-hexane, or an aqueous antisolvent, water containing polyethylene glycol (PEG). Process parameters such as solvent/ antisolvent ratio, agitation, ultrasonication etc. were studied. UF-RDX was characterized for Brunauer-Emmett-Teller (BET) surface area, X-ray diffraction (XRD), Scanning Electron Microscope (SEM), Fourier Transform Infrared Spectroscopy (FT-IR), Differential Scanning Calorimetry (DSC) and sensitivity tests. In the case of the non-aqueous antisolvent, the precipitated RDX crystals were rod shaped of diameter <1 μm. For the aqueous antisolvent, oval shaped crystals (<5 μm) were precipitated. UF-RDX was found to be more sensitive to impact and less friction sensitive compared to production grade RDX (60-80 μm).
    Źródło:
    Central European Journal of Energetic Materials; 2013, 10, 3; 393-407
    1733-7178
    Pojawia się w:
    Central European Journal of Energetic Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Formation of Boric Acid by Surface Oxidation of Amorphous Boron Powder: Characterization and Quantitative Estimation
    Autorzy:
    Nandi, A. K.
    Ghosh, M.
    Newale, S. P.
    Jadhav, A. J.
    Prasanth, H.
    Pandey, R. K.
    Powiązania:
    https://bibliotekanauki.pl/articles/358160.pdf
    Data publikacji:
    2012
    Wydawca:
    Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego
    Tematy:
    amorphous boron powder
    B2O3
    boric acid
    FTIR
    SEM
    EDX
    Opis:
    Amorphous Boron Powder (ABP) is used as a fuel in air breathing propulsion systems due to its high gravimetric and volumetric heat value. ABP is sensitive to air and undergoes slow oxidation during storage and handling, leading to the formation of a boric acid layer on the particle surface. This paper describes an analytical method for the estimation of boric acid in ABP. In-house samples obtained from the pilot plant of this laboratory, as well as commercial samples, were assayed for their boric acid content. The study is substantiated by characterization of the ABP samples by SEM with EDX and FTIR. The ageing characteristics of in-house boron powder was also studied.
    Źródło:
    Central European Journal of Energetic Materials; 2012, 9, 4; 387-398
    1733-7178
    Pojawia się w:
    Central European Journal of Energetic Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Preparation of Nano Aluminium Powder (NAP) using a Thermal Plasma: Process Development and Characterization
    Autorzy:
    Pant, A.
    Seth, T.
    Raut, V. B.
    Gajbhiye, V. P.
    Newale, S. P.
    Nandi, A. K.
    Prasanth, H.
    Pandey, R. K.
    Powiązania:
    https://bibliotekanauki.pl/articles/358835.pdf
    Data publikacji:
    2016
    Wydawca:
    Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego
    Tematy:
    nano aluminium
    thermal plasma
    DC arc plasma
    RF induction plasma
    aluminium content
    BET surface area
    HR-TEM
    Opis:
    A bottom up approach for the preparation of Nano Aluminium Powder (NAP) using a Transferred Arc Thermal Plasma Reactor (TAPR) is described. The aluminium block is subjected to evaporation by the application of a thermal plasma. The aluminium vapour produced is rapidly quenched to room temperature resulting in crystallization of the aluminium vapour in nano-particulate form. Various process parameters, such as the plasma torch power, reactor pressure and plasma gas composition were optimized. This paper also describes the characterization of NAP by analytical methods, for the estimation of the Active Aluminium Content (AAC), Total Aluminium Content (TAC), XRD, bulk density, BET surface area, HR-TEM etc. The results are compared with those for samples prepared in other thermal plasma reactors, such as the DC Arc Plasma Reactor (DCAPR) and the RF Induction Thermal Plasma Reactor (RFITPR), and for commercially available NAP samples (ALEX, prepared by the EEW technique).
    Źródło:
    Central European Journal of Energetic Materials; 2016, 13, 1; 53-71
    1733-7178
    Pojawia się w:
    Central European Journal of Energetic Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-5 z 5

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