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Spheres of Microporous Titanosilicate Umbite with Hierarchical Pore Systems
Author(s) -
Sebastián Víctor,
Díaz Isabel,
Téllez Carlos,
Coronas Joaquín,
Santamaría Jesús
Publication year - 2008
Publication title -
advanced functional materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.069
H-Index - 322
eISSN - 1616-3028
pISSN - 1616-301X
DOI - 10.1002/adfm.200701067
Subject(s) - microporous material , materials science , macropore , spheres , chemical engineering , crystallite , zeolite , porosity , ion exchange , nanotechnology , composite material , ion , mesoporous material , catalysis , organic chemistry , metallurgy , chemistry , physics , astronomy , engineering
Micrometric polycrystalline spheres of up to 1 mm diameter of microporous titanosilicate K 2 TiSi 3 O 9 ·H 2 O with umbite structure have been prepared without the use of organic structuring agents. These spheres are organized as micro/macroporous hierarchical materials with macropores in the 0.2–1.4 µm range of average size, showing that intraparticular resistance to water transport is not limiting. Also, similar ion exchange performance can be observed in the Ti‐umbite spheres and in the single crystals obtained under the same synthesis conditions.