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Synthesis of Macrostructured Silica by Sedimentation–Aggregation
Author(s) -
Vaudreuil S.,
Bousmina M.,
Kaliaguine S.,
Bonneviot L.
Publication year - 2001
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/1521-4095(200109)13:17<1310::aid-adma1310>3.0.co;2-a
Subject(s) - materials science , sedimentation , dispersity , polystyrene , calcination , dispersion (optics) , macropore , chemical engineering , acetone , polymer chemistry , polymer , composite material , optics , organic chemistry , mesoporous material , catalysis , sediment , chemistry , paleontology , physics , biology , engineering
Highly stable silicas characterized by narrow pore size distribution in the macroscale range have been synthesized using a novel and simple route based on sedimentation–aggregation of monodisperse polystyrene (PS) beads. The network of macropores and macrowindows is preserved upon calcination up to 900 °C. The Figure shows an SEM image of PS beads after sedimentation, vacuum drying, and dispersion in acetone.