%0 Journal Article
%A Thibaud, Jean-Marc
%A Rouquette, Jérôme
%A Hermet, Patrick
%A Dziubek, Kamil
%A Gorelli, Federico A.
%A Santoro, Mario
%A Garbarino, Gaston
%A Alabarse, Frederico G.
%A Cambon, Olivier
%A Renzo, Francesco Di
%A van der Lee, Arie
%A Haines, Julien
%D 2017
%T High-Pressure Phase Transition, Pore Collapse, and
Amorphization in the Siliceous 1D Zeolite, TON
%U https://acs.figshare.com/articles/journal_contribution/High-Pressure_Phase_Transition_Pore_Collapse_and_Amorphization_in_the_Siliceous_1D_Zeolite_TON/4678867
%R 10.1021/acs.jpcc.6b11594.s002
%2 https://acs.figshare.com/ndownloader/files/7633303
%K amorphization
%K nonpenetrating pressure-transmitting media
%K 1- D pore system
%K pore Cmc 2 1 phase
%K Siliceous 1 D Zeolite
%K Cmc 2 1
%K GPa
%K High-Pressure Phase Transition
%K DFT calculations
%K Pbn 2 1 phase transition
%K siliceous zeolite TON
%K Pbn 2 1 structure
%X The siliceous zeolite
TON with a 1-D pore system was studied at
high pressure by X-ray diffraction, infrared spectroscopy, and DFT
calculations. The behavior of this material was investigated using
nonpenetrating pressure-transmitting media. Under these conditions,
a phase transition from the Cmc21 to a Pbn21 structure occurs at close to 0.6 GPa with
doubling of the primitive unit cell based on Rietveld refinements.
The pores begin to collapse with a strong increase in their ellipticity.
Upon decreasing the pressure below this value the initial structure
was not recovered. DFT calculations indicate that the initial empty
pore Cmc21 phase is dynamically unstable.
Irreversible, progressive pressure-induced amorphization occurs upon
further increases in pressure up to 21 GPa. These changes are confirmed
in the mid- and far-infrared spectra by peak splitting at the Cmc21 to Pbn21 phase
transition and strong peak broadening at high pressure due to amorphization.
%I ACS Publications