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Direct Formation of Mesoporous Coesite Single Crystals from Periodic Mesoporous Silica at Extreme Pressure
Author(s) -
Mohanty Paritosh,
Ortalan Volkan,
Browning Nigel D.,
Arslan Ilke,
Fei Yingwei,
Landskron Kai
Publication year - 2010
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201001114
Subject(s) - mesoporous material , porosity , crystallization , coesite , materials science , mesoporous silica , chemical engineering , mesoporous organosilica , classification scheme , porous medium , mineralogy , nanotechnology , geology , composite material , computer science , chemistry , organic chemistry , information retrieval , paleontology , subduction , eclogite , engineering , tectonics , catalysis
Under an extreme pressure of 12 GPa, mesoporous coesite can be formed directly from periodic mesoporous silica without the aid of a template. The porous coesite particles obtained from SBA‐16 are single crystalline, with a pore size of about 4 nm and about 50 % porosity. The formation can be attributed to the kinetically controlled crystallization of a nonporous elastically strained glasslike silica intermediate (see scheme).