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  1. No Access

    Article

    Isomerization ofn-butane on sulfated zirconia: Evidence for the dominant role of Lewis acidity on the catalytic activity

    The catalytic activity of a ZrO2/SO4 catalyst in the isomerization ofn-butane at 423 K is reversibly suppressed by addition of CO. IR analysis of the adsorption of CO indicates that the only σ-coordination of CO ...

    F. Pinna, M. Signoretto, G. Strukul, G. Cerrato, C. Morterra in Catalysis Letters (1994)

  2. No Access

    Article

    Structural investigation on the stoichiometry of β-PdHx in Pd/SiO2 catalysts as a function of metal dispersion

    Structural investigations of dispersed Pd/SiO2 catalysts were carried out with XRD and SAXS techniques, supported by TPR and CO chemisorption measurements. The stoichiometry of Pd hydride, β-PdHx, was determined ...

    G. Fagherazzi, A. Benedetti, S. Polizzi, A. Di Mario, F. Pinna… in Catalysis Letters (1995)

  3. No Access

    Article

    Platinum promoted zirconia-sulfate catalysts: one-pot preparation, physical properties and catalytic activity

    A new innovative methodology for the single-stage preparation of ZrO2-SO4 and Pt/ZrO2-SO4 catalysts is reported, based on the sol-gel technique. Catalysts are characterized by analysis, XRPD, BET and IR methods a...

    M. Signoretto, F. Pinna, G. Strukul, G. Cerrato, C. Morterra in Catalysis Letters (1996)

  4. No Access

    Article

    Pd-SiO2 catalysts. stability of β-PdHx as a function of Pd dispersion

    Measurements of β-PdHx stoichiometry by hydrogen TPD and of Pd dispersion by CO chemisorption has shown that in Pd−SiO2 catalysts the formation of β-PdHx is more and more hindered with the increase of Pd dispersi...

    F. Pinna, M. Signoretto, G. Strukul, S. Polizzi… in Reaction Kinetics and Catalysis Letters (1997)

  5. No Access

    Article

    Isomerization of n-butane over Fe,Mn-promoted sulfated zirconia: catalytic activity and surface features of the catalyst

    The catalytic properties of Fe,Mn-promoted sulfated zirconia catalysts have been tested as a function of: (i) the temperature of the preliminary calcination step; (ii) the conditions of the catalyst activation...

    C. Morterra, G. Cerrato, S. Di Ciero, M. Signoretto, A. Minesso… in Catalysis Letters (1997)

  6. No Access

    Article

    Characterization of Fe‐promoted sulfated zirconia catalysts used for the n‐butane isomerization by XPS and Mössbauer spectroscopies

    Iron‐promoted sulfated zirconia catalysts have been characterized by Mössbauer spectroscopy and XPS before and after catalytic test for the isomerization of n‐butane. The data obtained by Mössbauer spectroscopy s...

    J.M.M. Millet, M. Signoretto, P. Bonville in Catalysis Letters (2000)

  7. No Access

    Article

    Catalytic activity and some related spectral features of yttria-stabilised cubic sulfated zirconia

    Cubic sulfated zirconia (c-SZ) was prepared by sulfating phase-stabilised c-ZrO2, and its properties are compared with those of tetragonal (t-SZ) and monoclinic (m-SZ) systems. ZrO2 crystalline phases have been i...

    C. Morterra, G. Cerrato, G. Meligrana, M. Signoretto, F. Pinna… in Catalysis Letters (2001)

  8. No Access

    Article

    Gas- and Liquid-Phase Reactions on Sulphated Zirconia Prepared by Precipitation

    Sulphated zirconia (SZ) was synthesized under different precipitation and ageing conditions. Catalysts were characterized by nitrogen adsorption–desorption, thermal analysis, FTIR and Raman spectroscopy. The c...

    S. Melada, M. Signoretto, F. Somma, F. Pinna, G. Cerrato, G. Meligrana… in Catalysis Letters (2004)

  9. No Access

    Article

    Mesoporous Silica–Zirconia Systems for Catalytic Applications

    In this study synthesis and characterization of solid acid catalysts with definite textural properties (high surface area, narrow pore size dimension, ordered structure) are described. In particular sulphated ...

    E. Ghedini, M. Signoretto, F. Pinna, G. Cruciani in Catalysis Letters (2008)

  10. No Access

    Article

    Sulfadiazine-based drug delivery systems prepared by an effective sol–gel process

    In the present contribution a versatile and sustainable strategy for the formulation of a drug delivery system for the controlled release of antibiotics for topical administration was developed. Silver sulfadi...

    E. Ghedini, C. Pizzolitto, G. Albore… in Journal of Sol-Gel Science and Technology (2017)