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Wyszukujesz frazę "structural properties" wg kryterium: Temat

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    Wyświetlanie 1-4 z 4
    Tytuł:
    Lignosulfonate and silica as precursors of advanced composites
    Autorzy:
    Klapiszewski, Ł.
    Nowacka, M.
    Siwińska-Stefańska, K.
    Jesionowski, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/778432.pdf
    Data publikacji:
    2013
    Wydawca:
    Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
    Tematy:
    Magnesium lignosulfonate
    silica
    Silica/lignosulfonate composite
    Physicochemical and structural properties
    Opis:
    Advanced silica/lignosulfonate composites were obtained using magnesium lignosulfonate and silica precipitated in a polar medium. For comparative purposes analogous synthesis was performed using commercial silica Aerosil®200. Lignosulfonates are waste products of paper industry and their application in new multifunctional materials is of great economic interest. The composites obtained were subjected to thorough characterization by determination of their physicochemical, dispersive-morphological and electrokinetic properties. Their particle size distribution was measured, SEM images were taken, FT-IR analysis and colorimetric study were made, thermal and electrokinetic stabilities and parameters of porous structure were also determined. The results can be of interest in further application studies.
    Źródło:
    Polish Journal of Chemical Technology; 2013, 15, 3; 103-109
    1509-8117
    1899-4741
    Pojawia się w:
    Polish Journal of Chemical Technology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Use of MgO to Promote the Oxyethylation Reaction of Lauryl Alcohol
    Autorzy:
    Pilarska, A.
    Lukosek, M.
    Siwińska-Stefańska, K.
    Pilarski, K.
    Jesionowski, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/779641.pdf
    Data publikacji:
    2014
    Wydawca:
    Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
    Tematy:
    magnesium hydroxide and oxide
    precipitation
    dispersive and structural properties
    oxyethylation
    catalytic activity
    Opis:
    Synthesis of magnesium hydroxide was performed by the precipitation method with the use of magnesium sulfate and sodium hydroxide. The infiuence of temperature and ratio of reagents was studied. Magnesium hydroxides, and the magnesium oxides obtained from them by thermal decomposition, were analyzed to determine their bulk density, polydispersity and particle size. The magnesium oxide with the largest surface area was tested as a catalyst in the oxyethylation of lauryl alcohol, and shown to be selective but poorly reactive in comparison with commercially available catalysts. Further studies are needed to improve its reactivity.
    Źródło:
    Polish Journal of Chemical Technology; 2014, 16, 2; 36-42
    1509-8117
    1899-4741
    Pojawia się w:
    Polish Journal of Chemical Technology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Structural and textural characterisation of NiMo catalysts supported on various zeolites
    Autorzy:
    Sarbak, Z.
    Fabiś, G.
    Binkowski, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/778497.pdf
    Data publikacji:
    2007
    Wydawca:
    Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
    Tematy:
    zeolity
    katalizatory NiMo
    właściwości strukturalne
    porowatość
    zeolites
    NiMo catalysts
    structural properties
    surface area
    porosity
    Opis:
    Structural and textural properties of nickel-molybdenum catalysts supported on four various type of zeolites of different chemical composition and porous structure have been studied by the methods of IR, XRD and the low-temperature sorption of nitrogen. The catalysts have been obtained by the two-stage impregnation of the supports with the solutions of nickel and molybdenum salts by the method of incipient wetness. The catalysts have been shown to preserve the structure characteristic of the appropriate zeolite supports.
    Źródło:
    Polish Journal of Chemical Technology; 2007, 9, 1; 27-32
    1509-8117
    1899-4741
    Pojawia się w:
    Polish Journal of Chemical Technology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Conditions of synthesis and structure of metakaolin-based geopolymers: application as heavy metal cation sorbent
    Autorzy:
    Król, M.
    Brylewska, K.
    Knapik, A.
    Kornaus, K.
    Mozgawa, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/778941.pdf
    Data publikacji:
    2017
    Wydawca:
    Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
    Tematy:
    metakaolin
    geopolymers
    structural and textural properties
    heavy metal sorbent
    Opis:
    This study presents the synthesis of geopolymer materials designed for application as self-supporting zeolite membranes. For this purpose, batches of metakaolin activated with sodium silicate and sodium hydroxide were used. During synthesis, it was assumed that low temperatures are sufficient to receive the membranes. The composition of raw materials and temperature of activation were selected in such a way so as to correspond to the basic chemical compositions and synthesis conditions of sodalite as well as zeolites A and X. Additionally, the structural and textural properties of geopolymers were determined. The results show that it is possible to obtain composite zeolite structures in an amorphous matrix. A number of synthesized materials were used in the sorption of selected heavy metal cations (Ni2+ , Zn2+ , Pb2+  and Cd2+ ). It was concluded that the investigated geopolymerization process may be applied to obtain a material with potential use as a heavy metal sorbent.
    Źródło:
    Polish Journal of Chemical Technology; 2017, 19, 4; 103-109
    1509-8117
    1899-4741
    Pojawia się w:
    Polish Journal of Chemical Technology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

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