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Microstructural Modifications in Macroporous Oxides Prepared Via Latex Templating: Synthesis and Thermal Stability of Porous Microstructure
Author(s) -
Verissimo Carla,
Alves Oswaldo L.
Publication year - 2006
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1551-2916.2006.00996.x
Subject(s) - microstructure , calcination , materials science , porosity , chemical engineering , sintering , thermal stability , oxide , zirconium , raman spectroscopy , polystyrene , phase (matter) , thermal treatment , composite material , metallurgy , chemistry , organic chemistry , polymer , catalysis , physics , optics , engineering
Titanium and zirconium oxides with interconnected macropores presenting well‐defined pore sizes and controlled three‐dimensional ordering were prepared using a latex templating method. Polystyrene spheres were used as pore templates, whereas metal alkoxides were used as oxide precursors. The final thermal treatment at different temperatures showed macroporous microstructure stabilities up to 600°C. At higher temperatures, a collapse of the macroporous microstructure and sintering were observed, as well as phase transformations in the oxides structures during the calcination process, as shown by Raman spectroscopy and X‐ray diffraction techniques.