2018
DOI: 10.26434/chemrxiv.7455239
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Pressure-Induced Symmetry Changes in Body-Centered Cubic Zeolites

Abstract: <p>Previous work has shown a strong correlation between zeolite framework flexibility and the nature of structural symmetry and phase transitions. However, there is little experimental data regarding this relationship, in addition to how flexibility can be connected to the synthesis of these open framework materials. This is of interest for the synthesis of novel zeolites, which require organic additives to permutate the resulting geometry and symmetry of the framework. Here, we have used high pressure p… Show more

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“…However, there is substantial evidence in the literature where the symmetry is lowered due to certain stimuli, such as dehydration 36 and low temperatures 42 which are relevant here, as well as applying mechanical pressure. 43,44 The 𝐼4 ̅ 3𝑚 symmetry is characterised by elliptical deformations in the 8-ring apertures, as illustrated in figure 4.…”
Section: Zeolite Rhomentioning
confidence: 99%
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“…However, there is substantial evidence in the literature where the symmetry is lowered due to certain stimuli, such as dehydration 36 and low temperatures 42 which are relevant here, as well as applying mechanical pressure. 43,44 The 𝐼4 ̅ 3𝑚 symmetry is characterised by elliptical deformations in the 8-ring apertures, as illustrated in figure 4.…”
Section: Zeolite Rhomentioning
confidence: 99%
“…Both zeolites were fit using the 𝐼𝑚3 ̅ 𝑚 space group, which is the ambient symmetry anticipated for zeolite ZK-5. 37,43,45…”
Section: The 18c6 Speciesmentioning
confidence: 99%