Synthesis of a Novel Zeolite through a Pressure‐Induced Reconstructive Phase Transition Process

Jordá, José L.; Rey, Fernando; Sastre, Germán; Valencia, Susana; Palomino, Miguel; Corma, Avelino; Segura, Alfredo; Errandonea, Daniel; Lacomba, Raúl; Manjón, F. J.; Gomis, O.; Kleppe, Annette K.; Jephcoat, A. P.; Amboage, M.; Rodríguez-Velamazán, J. A.

doi:10.1002/ange.201305230

Cited by 26 publications

(32 citation statements)

References 32 publications

(32 reference statements)

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“…In general, although the molecular‐level bases of high‐pressure phenomena are largely unexplored, the perspectives appear particularly exciting. New host types have also been created: for example, starting from an economically convenient precursor, a new zeolite has been obtained by high pressure treatment, showing significantly better catalytic performances than the parent material …”

Section: Discussionmentioning

confidence: 99%

Supramolecular Organization in Confined Nanospaces

Tabacchi

2018

ChemPhysChem

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Empty spaces are abhorred by nature, which immediately rushes in to fill the void. Humans have learnt pretty well how to make ordered empty nanocontainers, and to get useful products out of them. When such an order is imparted to molecules, new properties may appear, often yielding advanced applications. This review illustrates how the organized void space inherently present in various materials: zeolites, clathrates, mesoporous silica/organosilica, and metal organic frameworks (MOF), for example, can be exploited to create confined, organized, and self-assembled supramolecular structures of low dimensionality. Features of the confining matrices relevant to organization are presented with special focus on molecular-level aspects. Selected examples of confined supramolecular assemblies - from small molecules to quantum dots or luminescent species - are aimed to show the complexity and potential of this approach. Natural confinement (minerals) and hyperconfinement (high pressure) provide further opportunities to understand and master the atomistic-level interactions governing supramolecular organization under nanospace restrictions.

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Section: Discussionmentioning

confidence: 99%

Supramolecular Organization in Confined Nanospaces

Tabacchi

2018

ChemPhysChem

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“…This advances the argument that graph similarity is a powerful predictor of kinetic transformations in zeolites. The only exception to this rule is the reconstructive LTA-IFY transformation 26 , which reportedly requires an external stress of 3 GPa to be induced. This very high stress suggests that diffusionless transitions between low graphsimilar zeolites require extreme conditions.…”

Section: And the Supplementary Information For Full Definitions)mentioning

confidence: 99%

Graph similarity drives zeolite diffusionless transformations and intergrowth

et al. 2019

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“…Two recent studies have performed high-pressure XRD and neutron diffraction experiments on pure-silica ITQ-29 using a non-penetrating PTM, like silicone oil and arsenolite [33,34]. Under compression, ITQ-29 undergoes two transformations at 1.2 and 3.2 GPa, respectively, the first one fully reversible and the second one, non-reversible upon pressure release [33]. This latter phase was fully characterized as a novel zeolite type, ITQ-50, with different cage topology to ITQ-29.…”

Section: A Room-pressure High-temperature Experimental Datamentioning

confidence: 99%

Structural Evolution of CO₂-Filled Pure Silica LTA Zeolite under High-Pressure High-Temperature Conditions

et al. 2017

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The crystal structure of CO2-filled pure-SiO2 LTA zeolite has been studied at high pressures and temperatures using synchrotron-based x-ray powder diffraction. Its structure consists of 13 CO2 guest molecules, 12 of them -cages -cages, giving a SiO2:CO2 stoichiometric ratio smaller than 2. The structure remains stable under pressure up to 20 GPa with a slight pressure-dependent rhombohedral distortion, indicating that pressureinduced amorphization is prevented by the insertion of guest species in this open framework. The ambient-temperature lattice compressibility has been determined. In situ high-pressure resistiveheating experiments up to 750 K allow us to estimate the thermal expansivity at P~5 GPa. Our data confirm that the insertion of CO2 reverses the negative thermal expansion of the empty zeolite structure. No evidence of any chemical reaction was observed. The possibility of synthesizing a silicon carbonate at high temperatures and higher pressures is discussed in terms of the evolution of C -O and Si -O distances between molecular and framework atoms.

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Synthesis of a Novel Zeolite through a Pressure‐Induced Reconstructive Phase Transition Process

Cited by 26 publications

References 32 publications

Supramolecular Organization in Confined Nanospaces

Supramolecular Organization in Confined Nanospaces

Graph similarity drives zeolite diffusionless transformations and intergrowth

Structural Evolution of CO₂-Filled Pure Silica LTA Zeolite under High-Pressure High-Temperature Conditions

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Synthesis of a Novel Zeolite through a Pressure‐Induced Reconstructive Phase Transition Process

Cited by 26 publications

References 32 publications

Supramolecular Organization in Confined Nanospaces

Supramolecular Organization in Confined Nanospaces

Graph similarity drives zeolite diffusionless transformations and intergrowth

Structural Evolution of CO2-Filled Pure Silica LTA Zeolite under High-Pressure High-Temperature Conditions

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Product

Resources

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Structural Evolution of CO₂-Filled Pure Silica LTA Zeolite under High-Pressure High-Temperature Conditions