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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Morris, Russell E.
University of St Andrews
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (30/30 displayed)
- 2024In situ single-crystal X-ray diffraction studies of physisorption and chemisorption of SO2 within a metal-organic framework and its competitive adsorption with watercitations
- 2023In situ single-crystal synchrotron X-ray diffraction studies of biologically active gases in metal-organic frameworkscitations
- 2023Mixed metal-organic framework mixed-matrix membranes : insights into simultaneous moisture-triggered and catalytic delivery of nitric oxide using cryo-scanning electron microscopycitations
- 2023Mixed metal-organic framework mixed-matrix membranes:insights into simultaneous moisture-triggered and catalytic delivery of nitric oxide using cryo-scanning electron microscopycitations
- 2023Synthesis of FeAPO-34 molecular sieve under ionothermal conditioncitations
- 2023Mixed metal-organic framework mixed-matrix membranescitations
- 2022A structural investigation of organic battery anode materials by NMR crystallographycitations
- 2022Synthesis of FeAPO-34 molecular sieve under ionothermal conditioncitations
- 2022How reproducible are surface areas calculated from the BET equation?citations
- 2021Controlled synthesis of large single crystals of metal-organic framework CPO-27-Ni prepared by a modulation approach : in situ single crystal X-ray diffraction studiescitations
- 2021Multifaceted study of the interactions between CPO-27-Ni and polyurethane and their impact on nitric oxide release performancecitations
- 2021Controlled synthesis of large single crystals of metal-organic framework CPO-27-Ni prepared by a modulation approach: in situ single crystal X-ray diffraction studiescitations
- 2020Multifaceted study of the interactions between CPO-27-Ni and polyurethane and their impact on nitric oxide release performancecitations
- 2019A single crystal study of CPO-27 and UTSA-74 for nitric oxide storage and releasecitations
- 2019Vapour-phase-transport rearrangement technique for the synthesis of new zeolitescitations
- 2018Physisorption-induced structural change directing carbon monoxide chemisorption and nitric oxide coordination on hemilabile porous metal organic framework NaNi3(OH)(SIP)2(H2O)5·H2O (SIP = 5-sulfoisophthalate)citations
- 2017Physisorption-induced structural change directing carbon monoxide chemisorption and nitric oxide coordination on hemilabile porous metal organic framework NaNi 3 (OH)(SIP) 2 (H 2 O) 5 ·H 2 O (SIP = 5-sulfoisophthalate)citations
- 2017Physisorption-induced structural change directing carbon monoxide chemisorption and nitric oxide coordination on hemilabile porous metal organic framework NaNi3(OH)(SIP)2(H2O)5·H2O (SIP = 5-sulfoisophthalate)citations
- 2017Assembly-diassembly-organization-reassembly synthesis of zeolites based on cfi-type layerscitations
- 2015Exploiting chemically selective weakness in solids as a route to new porous materialscitations
- 2014Synthesis and structural characterization of a single-crystal to single-crystal transformable coordination polymercitations
- 2014Synthesis and structural characterization of a single-crystal to single-crystal transformable coordination polymercitations
- 2014The effect of pressure on the post-synthetic modification of a nanoporous metal-organic frameworkcitations
- 2013Post-synthetic incorporation of nickel into CPO-27(Mg) to give materials with enhanced permanent porositycitations
- 2012Pair distribution function-derived mechanism of a single-crystal to disordered to single-crystal transformation in a hemilabile metal–organic frameworkcitations
- 2010Comparing quantum-chemical calculation methods for structural investigation of zeolite crystal structures by solid-state NMR spectroscopycitations
- 2010NO-loaded Zn(2+)-exchanged zeolite materials:a potential bifunctional anti-bacterial strategycitations
- 2010In Situ Single-Crystal Diffraction Studies of the Structural Transition of Metal-Organic Framework Copper 5-Sulfoisophthalate, Cu-SIP-3citations
- 2009A novel non-centrosymmetric metallophosphate-borate compound via ionothermal synthesiscitations
- 2001Variable-Temperature Microcrystal X-ray Diffraction Studies of Negative Thermal Expansion in the Pure Silica Zeolite IFRcitations
Places of action
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article
Physisorption-induced structural change directing carbon monoxide chemisorption and nitric oxide coordination on hemilabile porous metal organic framework NaNi3(OH)(SIP)2(H2O)5·H2O (SIP = 5-sulfoisophthalate)
Abstract
<p>Structural changes occur during the thermal activation of NaNi<sub>3</sub>(OH)(SIP)<sub>2</sub>(H<sub>2</sub>O)<sub>5</sub>·H<sub>2</sub>O and NaCo<sub>3</sub>(OH)(SIP)<sub>2</sub>(H<sub>2</sub>O)<sub>5</sub>·H<sub>2</sub>O to form porous framework materials. Activation of NaNi<sub>3</sub>(OH)(SIP)<sub>2</sub>(H<sub>2</sub>O)<sub>5</sub>·H<sub>2</sub>O at 400 K gave NaNi<sub>3</sub>(OH)(SIP)<sub>2</sub>(H<sub>2</sub>O)<sub>2</sub> and 513 K gave NaNi<sub>3</sub>(OH)(SIP)<sub>2</sub>. CO adsorption/desorption on NaNi<sub>3</sub>(OH)(SIP)<sub>2</sub>(H<sub>2</sub>O)<sub>2</sub> at 348 K and 20 bar was hysteretic, but all CO was desorbed in vacuum. NaNi<sub>3</sub>(OH)(SIP)<sub>2</sub>(H<sub>2</sub>O)<sub>2</sub> was exposed to NO to establish the accessibility of unsaturated metal centers and crystallographic results show that NO binds to Ni with bent coordination geometry. The adsorption characteristics of CO on isostructural NaNi<sub>3</sub>(OH)(SIP)<sub>2</sub> and NaCo<sub>3</sub>(OH)(SIP)<sub>2</sub> were studied over the temperature range 268-348 K and pressures up to 20 bar. CO surface excess isotherms for NaNi<sub>3</sub>(OH)(SIP)<sub>2</sub> at 348 K were reversible and non-hysteretic for pressures below the isotherm point of inflection. However, above this point, isotherms had both reversible and irreversible adsorption components. The irreversible component remaining adsorbed in ultra-high vacuum at 348 K was 4.9 wt%. Subsequent sequential CO adsorption/desorption isotherms were non-hysteretic and fully reversible. The thermal stability and stoichiometry of the product were investigated by in situ temperature programmed desorption combined with thermogravimetric analysis and mass spectrometry. This gave a discrete CO peak at ∼500 K indicating thermally stable bonding of CO to the framework (0.42 × CO per formula desorbed (2.31 wt%)) and a weaker CO<sub>2</sub> peak was observed at 615 K. The remaining adsorbed species were desorbed as a mixture of CO and CO<sub>2</sub> overlapping with NaNi<sub>3</sub>(OH)(SIP)<sub>2</sub> framework decomposition. CO physisorption induces structural change, which leads to CO chemisorption on NaNi<sub>3</sub>(OH)(SIP)<sub>2</sub> above the point of inflection in the isotherm, with the formation of a new thermally stable porous framework. The porous structure of the framework was confirmed by CO<sub>2</sub> adsorption at 273 K. Therefore, CO chemisorption is attributed to breaking of the hemilabile switchable sulfonate group, while the framework structural integrity is retained by the stable carboxylate linkers. In contrast, studies of CO adsorption on NaCo<sub>3</sub>(OH)(SIP)<sub>2</sub> showed hysteretic isotherms, but no evidence for irreversible chemisorption CO was observed. The CO/N<sub>2</sub> selectivity for NaNi<sub>3</sub>(OH)(SIP)<sub>2</sub> and NaCo<sub>3</sub>(OH)(SIP)<sub>2</sub> were 2.4-2.85 (1-10 bar) and 1.74-1.81 (1-10 bar). This is the first demonstration of physisorption driving structural change in a hemilabile porous framework material and demonstrates a transition from physisorption to irreversible thermally stable CO chemisorption.</p>