Anomalous elastic behavior and high-pressure structural evolution of zeolite levyne

2005 ◽  
Vol 90 (4) ◽  
pp. 645-652 ◽  
Author(s):  
G. D. Gatta
Keyword(s):  
High Pressure ◽  
Structural Evolution ◽  
Elastic Behavior

scholarly journals Crystal Structure Evolution of CaSiO3 Polymorphs at Earth’s Mantle Pressures

Minerals ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 652
Author(s):  
Sula Milani ◽  
Davide Comboni ◽  
Paolo Lotti ◽  
Patrizia Fumagalli ◽  
Luca Ziberna ◽  
...  
Keyword(s):  
High Pressure ◽  
Structural Evolution ◽  
Elastic Behavior ◽  
Structure Evolution ◽  
Volume Increase ◽  
Ultra High Pressure ◽  
Geometrical Features ◽  
First Order Phase ◽  
Mantle Condition ◽  
Comprehensive Study

CaSiO3 polymorphs are abundant in only unique geological settings on the Earth’s surface and are the major Ca-bearing phases at deep mantle condition. An accurate and comprehensive study of their density and structural evolution with pressure and temperature is still lacking. Therefore, in this study we report the elastic behavior and structural evolution of wollastonite and CaSiO3-walstromite with pressure. Both minerals are characterized by first order phase transitions to denser structures. The deformations that lead to these transformations allow a volume increase ofthe bigger polyhedra, which might ease cation substitution in the structural sites of these phases. Furthermore, their geometrical features are clear analogies with those predicted and observed for tetrahedrally-structured ultra-high-pressure carbonates, which are unfortunately unquenchable. Indeed, wollastonite and CaSiO3-walstromite have a close resemblance to ultra-high-pressure chain- and ring-carbonates. This suggests a rich polymorphism also for tetrahedral carbonates, which might increase the compositional range of these phases, including continuous solid solutions involving cations with different size (Ca vs. Mg in particular) and important minor or trace elements incorporation.

Elastic behavior, phase transition, and pressure induced structural evolution of analcime

2006 ◽  
Vol 91 (4) ◽  
pp. 568-578 ◽  
Author(s):  
G. D. Gatta ◽  
F. Nestola ◽  
T. B. Ballaran
Keyword(s):  
Phase Transition ◽  
Structural Evolution ◽  
Elastic Behavior

Effect of catalysts on char structural evolution during hydrogasification under high pressure

Fuel ◽  
2017 ◽  
Vol 188 ◽  
pp. 474-482 ◽  
Author(s):  
Xuhui Liu ◽  
Biao Xiong ◽  
Xiaohong Huang ◽  
Haoran Ding ◽  
Ying Zheng ◽  
...  
Keyword(s):  
High Pressure ◽  
Structural Evolution

High pressure synthesis and structural evolution of new compounds of formulation NaNb1−xWxO3

1983 ◽  
Vol 18 (12) ◽  
pp. 1463-1470 ◽  
Author(s):  
Yoshinari Miyamoto ◽  
Shoichi Kume ◽  
Jean-Pierre Doumerc ◽  
Paul Hagenmuller
Keyword(s):  
High Pressure ◽  
Structural Evolution ◽  
High Pressure Synthesis ◽  
Pressure Synthesis ◽  
New Compounds

Hydrogen-bond enhancement triggered structural evolution and band gap engineering of hybrid perovskite (C6H5CH2NH3)2PbI4 under high pressure

2020 ◽  
Vol 22 (4) ◽  
pp. 1841-1846 ◽  
Author(s):  
Can Tian ◽  
Yongfu Liang ◽  
Wuhao Chen ◽  
Yanping Huang ◽  
Xiaoli Huang ◽  
...  
Keyword(s):  
Hydrogen Bond ◽  
High Pressure ◽  
Band Gap ◽  
Structural Evolution ◽  
Optoelectronic Properties ◽  
Band Gap Engineering ◽  
Hybrid Perovskite

Hybrid organic–inorganic perovskites (HOIPs) have gained substantial attention due to their excellent photovoltaic and optoelectronic properties.

Structural evolution of heavy rare Earth-based metal glass under high pressure

2020 ◽  
Vol 33 (3) ◽  
pp. 035405
Author(s):  
Wang Yongyong ◽  
Zhang Panpan ◽  
Li Qing ◽  
Li Gong
Keyword(s):  
High Pressure ◽  
Rare Earth ◽  
Structural Evolution ◽  
Heavy Rare Earth

scholarly journals Structural evolution of titanium dioxide during reduction in high-pressure hydrogen

2018 ◽  
Vol 17 (10) ◽  
pp. 923-928 ◽  
Author(s):  
Sencer Selcuk ◽  
Xunhua Zhao ◽  
Annabella Selloni
Keyword(s):  
High Pressure ◽  
Titanium Dioxide ◽  
Structural Evolution ◽  
Pressure Hydrogen

Structural evolution of bimetallic Co-Cu catalysts in CO hydrogenation to higher alcohols at high pressure

2020 ◽  
Vol 383 ◽  
pp. 33-41 ◽  
Author(s):  
Christoph Göbel ◽  
Stefan Schmidt ◽  
Christian Froese ◽  
Qi Fu ◽  
Yen-Ting Chen ◽  
...  
Keyword(s):  
High Pressure ◽  
Co Hydrogenation ◽  
Structural Evolution ◽  
Higher Alcohols ◽  
Cu Catalysts
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