Temperature-dependent vibrational spectroscopic and X-ray diffraction investigation of nanosized nickel chromite

Matulková, Irena; Holec, Petr; Němec, Ivan; Kitazawa, Hideaki; Furubayashi, T.; Vejpravová, J.

doi:10.1016/j.molstruc.2014.11.007

Cited by 9 publications

(5 citation statements)

References 17 publications

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“…The indexation of the PXRD diagram was carried out using the McMaille software and yielded the primitive tetragonal cell. The cell parameters were further refined by a whole powder pattern fit using Le Bail method in FullProf software 39 . Then the JANA program was used for the ultimately Rietveld refinements 40 .…”

Section: Methodsmentioning

confidence: 99%

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Highly efficient separation of linear and branched C4 isomers with a tailor‐made metal–organic framework

Zhang

Tan²,

Wang³

et al. 2020

AIChE Journal

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Separation of linear and branched isomers is of great commercial significance but still one of the energy‐intensive and challenging processes in petrochemical industry. Here, we for the first time report a tailor‐made metal–organic framework, ZU‐36‐Co (also termed GeFSIX‐3‐Co, GeFSIX = GeF62−, 3 = pyrazine), for the separation of both C4 linear/branched olefins (n−/iso‐C4H8) and paraffin isomers (n−/iso‐C4H10). With the pore size ranged between 3.82–5.25 Å, ZU‐36‐Co traps a large amount of n‐C4H8 (2.35 mmol/g) and n‐C4H10 (2.20 mmol/g) with iso‐C4H8 and iso‐C4H10 excluded. The molecular exclusion effect illustrates the significance of tailor‐made pore window size for gas separation. To our knowledge, ZU‐36‐Co exhibits the highest n−/iso‐C4H8 uptake ratio (13.8) and superior n−/iso‐C4H10 separation performance compared with the state‐of‐the‐art materials and sets a benchmark for the separation of linear and branched C4 isomers. This excellent molecular exclusion effect of ZU‐36‐Co was further confirmed by mixed gas breakthrough tests.

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Section: Methodsmentioning

confidence: 99%

“…The cell parameters were further refined by a whole powder pattern fit using Le Bail method in FullProf software. 39 Then the JANA program was used for the ultimately Rietveld refinements. 40 CCDC-1569353 (ZU-36-Co) and 1,887,519 contain the supplementary crystallographic data for this article.…”

Section: Introductionmentioning

confidence: 99%

Highly efficient separation of linear and branched C4 isomers with a tailor‐made metal–organic framework

Zhang

Tan²,

Wang³

et al. 2020

AIChE Journal

View full text Add to dashboard Cite

show abstract

“…Data treatment and structure solution were initially performed using FullProf software. 40 Then, the JANA program was used for Rietveld refinements. 41 2.3.…”

Section: Experimental Section and Theoretical Simulationmentioning

confidence: 99%

“…Powder X-ray diffraction (PXRD) was carried out at room temperature on a Bruker D8 Advance diffractometer using Cu Kα radiation (λ = 1.5418 Å). Data treatment and structure solution were initially performed using FullProf software . Then, the JANA program was used for Rietveld refinements …”

Section: Experimental Section and Theoretical Simulationmentioning

confidence: 99%

Fine-Tuning and Selective-Binding within an Anion-Functionalized Ultramicroporous Metal–Organic Framework for Efficient Olefin/Paraffin Separation

Zhang

Ding

Cui

et al. 2020

ACS Appl. Mater. Interfaces

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Olefin/paraffin separation is one of the intrinsically challenging tasks, mainly realized through the energy-intensive cryogenic distillation techniques. Here, we report the efficient separation of both propylene/propane (C3H6/C3H8) and ethylene/ethane (C2H4/C2H6) mixtures for the first time by a cheap and customized anion-functionalized metal–organic framework, ZU-36 (also termed as GeFSIX-3-M, M = Ni2+, Co2+), through molecular recognition and cross-section matching mechanism. Specifically, the pore window size of the fine-tuned ZU-36-Ni (4.42 × 4.42 Å2) decorated with high density of electronegative anions matches well with the cross section of C3H6 (4.16 × 4.65 Å2) and C2H4 (3.28 × 4.18 Å2), leading to efficient separation of C3H6/C3H8 and C2H4/C2H6. The high uptake capacity and separation selectivity of ZU-36-Ni were confirmed by adsorption isotherms and breakthrough tests. Binary dynamic breakthrough results showed that ZU-36-Ni can trap 1.35 mmol g–1 C3H6 and 1.08 mmol g–1 C2H4 from C3H6/C3H8 and C2H4/C2H6 mixtures, respectively. The separation selectivity for C3H6/C3H8 on ZU-36-Ni calculated from the breakthrough tests is 19, which sets a new benchmark for C3H6/C3H8 separation. The proposed cross-section matching mechanism together with proper selective binding affinity may serve as a guide for the design of effective porous materials for other important gas separation.

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“…Powder X-ray diffraction and structure refinement Powder X-ray diffraction (PXRD) was carried out at room temperature on a Bruker D8 Advance θ/θ diffractometer using Cu Kα radiation (λ=1.5418 Å). Data treatment and structure solution were initially performed using FullProf software [33]. Then the JANA program was used for Rietveld refinements [34].…”

Section: Synthesis Of Zu-16-co (Tifsix-3-co)mentioning

confidence: 99%

High and selective capture of low-concentration CO2 with an anion-functionalized ultramicroporous metal-organic framework

et al. 2020

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CO 2 capture, especially under low-pressure range, is of significance to maintain long-duration human operation in confined spaces and decrease the CO 2 corrosion and freezing effect for the liquefaction of natural gas. Herein, we for the first time report a novel anion-functionalized ZU-16-Co (TIFSIX-3-Co, TIFSIX=hexafluorotitanate (TiF 6 2−), 3=pyrazine), which exhibits one-dimensional pore channels decorated by abundant F atoms, for efficient CO 2 capture at a concentration around 400-10,000 ppm. Among its isostructural MFSIX-3 (M=Si, Ti, Ge) family materials, ZU-16-Co with fine-tuned pore size of 3.62 Å exhibits the highest CO 2 uptake at 0.01 bar (10,000 ppm) and 1 bar (2.63 and 2.87 mmol g −1 , respectively). The high CO 2 capture ability of ZU-16-Co originates from the fine-tuned pore dimensions with strong F•••C=O host-guest interactions and relatively large pore volumes coming from its longer coordinated Ti-F-Co distance (3.9 Å) in c direction. The excellent carbon trapping performance was further verified by dynamic breakthrough tests for CO 2 /N 2 (1/99 and 15/85) and CO 2 /CH 4 (50/ 50) mixtures. The adsorption and separation performances, resulting from the fine-tuned pore system with periodic arrays of exposed functionalities, demonstrate that ultramicroporous ZU-16-Co can be a promising adsorbent for low-concentration carbon capture.

show abstract

Temperature-dependent vibrational spectroscopic and X-ray diffraction investigation of nanosized nickel chromite

Cited by 9 publications

References 17 publications

Highly efficient separation of linear and branched C4 isomers with a tailor‐made metal–organic framework

Highly efficient separation of linear and branched C4 isomers with a tailor‐made metal–organic framework

Fine-Tuning and Selective-Binding within an Anion-Functionalized Ultramicroporous Metal–Organic Framework for Efficient Olefin/Paraffin Separation

High and selective capture of low-concentration CO2 with an anion-functionalized ultramicroporous metal-organic framework

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