Pure Silica Chabazite Molecular Spring: A Structural Study on Water Intrusion−Extrusion Processes

Trzpit, Mickaël; Rigolet, Séverinne; Paillaud, Jean‐Louis; Marichal, Claire; Soulard, Michel; Patarin, Joël

doi:10.1021/jp711889k

Cited by 59 publications

(92 citation statements)

References 19 publications

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“…In Si-chabazite, Trzpit and co-authors [38] found -through water intrusion/extrusion isotherms, 29 Si and 1 H NMR and X-ray powder diffraction -that H 2 O molecules are trapped in the chabazite supercage. Two situations were identified: i) aggregates formed by molecules strongly hydrogen bonded with the framework silanols (formed upon intrusion-extrusion ) and; ii) liquidlike physisorbed molecules, only interacting with other H 2 O molecules.…”

Section: Water Confinement and Condensation In Hydrophobic Zeolitesmentioning

confidence: 99%

“…[30][31][32][33]. In general, different behaviors can be observed, depending on various physical parameters of the matrix, such as pore size, pore system, channel dimensionality (one-, bi-or three-dimensional) [34][35][36][37], and on the hydrophobic/hydrophilic character of the zeolite [33,38]. According to the reversible or irreversible character of the intrusion-extrusion cycle, ""water -Si-zeolite"" systems are able to restore, absorb or dissipate mechanical energy.…”

Section: Introductionmentioning

confidence: 99%

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Pressure-induced water intrusion in FER-type zeolites and the influence of extraframework species on structural deformations

Arletti

Vezzalini

Quartieri

et al. 2014

Microporous and Mesoporous Materials

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The response to pressure of a natural ferrierite from Monastir (Sardinia, Italy) (Mon-FER) and of the synthetic all-silica phase (Si-FER) was investigated by means of in-situ synchrotron X-ray powder diffraction in the presence of penetrating (methanol:ethanol:water 16:3:1, m.e.w.) and non-penetrating (silicone oil, s.o.) pressure transmitting media (PTM). The following aspects are discussed: i) the penetration of extra-water molecules into the all-silica phase and the related structural aspects involving both framework and extraframework systems; ii) the influence of the zeolite composition and of the different PTM used in the compression experiments on the overall elastic parameters of the two investigated samples; iii) the elastic parameters and the unit cell P-induced deformations of the mineral phase; iv) the reversibility extents of the observed phenomena. Evidence of water penetration during compression of Si-FER in m.e.w. was found. The refinement performed at 0.2 GPa enabled location of 15 water molecules forming bulk-like and monodimensional water clusters. No methanol or ethanol penetration was observed. The results demonstrate that the free volume of the porous material is not the only parameter influencing water condensation since applied pressure is an additional fundamental factor. The bulk modulus value calculated from Pamb to 4.9 GPa for Mon-FER (K0 =44 GPa, Kp=0.2) is intermediate between the lowest (about 14 GPa) and the highest (about 72 GPa) values determined to date for zeolites compressed in non-penetrating PTM. The highest P-induced deformations are observed for Si-FER compressed in s.o. In general, higher rigidity for the natural sample was found in both media. All the reviewers requests were fulfilled: the references were corrected and the keywords were added after the abstract. UNIVERSITA' DEGLI STUDI DI TORINO Dipartimento di Scienze della TerraWe hope that now our paper will be suitable for publication. Best regard Rossella Arletti List of Revisions Highlights Penetration of 15 water molecules in synthetic Si-FER compressed in m.e.w was found. Eleven water molecules in the 10MR channels, forming bulk-like clusters. Four molecules were located in the FER cage as monodimensional clusters. Natural FER shows higher rigidity in m.e.w. and s.o. respect to the synthetic one. The presence of extraframework species in natural FER stiffens the structure. *Highlights (for review) *Graphical Abstract (for review) Pressure-induced water intrusion in FER-type zeolites and the influence of extraframework species on structural deformations AbstractThe response to pressure of a natural ferrierite from Monastir (Sardinia, Italy) (Mon-FER)and of the synthetic all-silica phase (Si-FER) was investigated by means of in-situ synchrotron Xray powder diffraction in the presence of penetrating (methanol:ethanol:water 16:3:1, m.e.w.) and non-penetrating (silicone oil, s.o.) pressure transmitting media (PTM). The following aspects are discussed: i) the penetration of extra-H 2 O molecules into t...

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Section: Water Confinement and Condensation In Hydrophobic Zeolitesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Pressure-induced water intrusion in FER-type zeolites and the influence of extraframework species on structural deformations

Arletti

Vezzalini

Quartieri

et al. 2014

Microporous and Mesoporous Materials

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“…A large number of "zeosil-water" systems has already been studied [7][8][9][10]. More recently this research field was extended to metal-organic framework [11][12][13][14], but also to the intrusion of electrolytes [15][16][17][18][19][20].…”

Section: Introductionmentioning

confidence: 99%

Intrusion-extrusion experiments of MgCl2 aqueous solution in pure silica ferrierite: Evidence of the nature of intruded liquid by in situ high pressure synchrotron X-ray powder diffraction

Arletti

Ronchi

Quartieri

et al. 2016

Microporous and Mesoporous Materials

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Intrusion-extrusion experiments of MgCl2 aqueous solution in pure silica ferrierite: Evidence of the nature of intruded liquid by in situ high pressure synchrotron X-ray powder diffraction / Arletti, Rossella; Ronchi, Laura; Quartieri, Simona; Vezzalini, Giovanna; Ryzhikov, Andrey; Nouali, Habiba; Daou, T. Jean; Patarin, Joël. ABSTRACTExperimental intrusion-extrusion isotherms of MgCl 2 21H 2 O solution were recorded at room temperature on pure silica FER-type zeolite (Si-FER). The intrusion occurs at 195 MPa and the phenomenon is completely reversible with a slight hysteresis. The "Si-FER -MgCl 2 aqueous solution" system behaves like a spring. The material was deeply characterized before and after intrusion-extrusion experiments and no significant changes were observed. The unit cell parameters were refined -on the basis of the in situ synchrotron X-ray powder diffraction data -up to 1.47 GPa and then at P amb upon pressure release. The Rietveld refinement of the data collected at 0.28 GPa (280 MPa), a pressure close to the intrusion value, shows that both ions and water molecules present in the MgCl 2 aqueous solution were intruded in the porosities. However, the solvation degree of the intruded ions differs from the initial solution, revealing a partial desolvation of both magnesium and chloride ions. As a whole, the nature and amount of the intruded species correspond to a MgCl 2 10H 2 O composition. Moreover, at a higher pressure (0.68 GPa), a phase transition from the orthorhombic Pmnn to the monoclinic P2 1 /n s.g. is observed in Si-FER. At 1.47 GPa, the zeolite maintains this monoclinic symmetry, while another phase transition, to the monoclinic P2 1 s.g., is argued from the analysis of the pattern of the sample compressed to 2.6 GPa and then collected upon pressure release to ambient conditions. KEYWORDS.FER-type zeolite, pure silica ferrierite, intrusion-extrusion experiments, in-situ high pressure synchrotron XRPD experiments, structural refinement.

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“…For water and hydrophobic silica gels, the confined liquid would remain in the nano-environment, resulting in a significant hysteresis of sorption isotherm [6][7][8][9]. On the contrary, for water and some kinds of hydrophobic zeo lites, water molecules extrude from the nano-pores as soon as the pressure drops, resulting in coincidence sorption isotherm [10][11][12][13][14]. For the former, the mechanical energy is absorbed so the mixture of water and hydrophobic silica gels is used as colloidal damper.…”

Section: Introductionmentioning

confidence: 99%

“…Suciu [6,7] and Qiao [8][9] tried to use colloidal damper for energy absorption. Eroshenko and Patarin [10][11][12][13][14] start to investigate molecular spring material at the beginning of this century. They have affirmed that several kinds of zeolites such as Silicalite-1, SSZ-24, ZSM-22, ZSM-12, DD3R and Si-CHA can be used as the nano-porous material for molecular spring.…”

Section: Introductionmentioning

confidence: 99%

Nonlinear Frequency Response Analysis and Jump Avoidance Design of Molecular Spring Isolator

Gao

Chen

2016

J. mech.

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Molecular spring vibration isolation technology has been invented in the recent years but it still needs further development in dynamics theory. A molecular spring isolation (MSI) consists of water and hydrophobic zeolites as working medium, providing high-static-low-dynamic stiffness. The dynamic properties of MSI are thoroughly investigated in this paper. Firstly, the nonlinear dynamic model of a vibration system support by MSI, i.e. the equation of motion, is established. Then the averaging method is employed to estimate the frequency response function (FRF) of the primary resonance. The phase trajectories diagram evolvement of primary resonance is also investigated to analysis the stability of the primary resonance response. From the plot of FRF, it is found that there exists a jump phenomenon induced by nonlinear stiffness, which may have harmful impacts on the equipment which is supposed to be protected from vibrations and shocks. To avoid jump, the FRF is analyzed to find the critical values of system parameters and a jump avoidance criterion is introduced.

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Pure Silica Chabazite Molecular Spring: A Structural Study on Water Intrusion−Extrusion Processes

Cited by 59 publications

References 19 publications

Pressure-induced water intrusion in FER-type zeolites and the influence of extraframework species on structural deformations

Pressure-induced water intrusion in FER-type zeolites and the influence of extraframework species on structural deformations

Intrusion-extrusion experiments of MgCl2 aqueous solution in pure silica ferrierite: Evidence of the nature of intruded liquid by in situ high pressure synchrotron X-ray powder diffraction

Nonlinear Frequency Response Analysis and Jump Avoidance Design of Molecular Spring Isolator

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