More on crystalline zirconium phosphates

Clearfield, Abraham; Landis, A.L.; Medina, A. S.; Troup, J. M.

doi:10.1016/0022-1902(73)80182-4

Cited by 39 publications

(19 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For example, the X‐ray powder diffraction method can show only the interlayer distance, which is not enough for detailed structural conclusions. Potentially, valuable data can be collected by solid‐state NMR techniques, for example, 31 P NMR allows determination of various phosphorus sites in the molecular systems . Among the available solid‐state NMR parameters, 31 P T 1 NMR relaxation is particularly attractive because it serves as a good tool for structural diagnostics and probing molecular dynamics.…”

Section: Introductionmentioning

confidence: 99%

Layered metal(IV) phosphonate materials: Solid‐state ¹H, ¹³C, ³¹P NMR spectra and NMR relaxation

Sheikh

Bakhmutov

Clearfield

2018

Magnetic Reson in Chemistry

View full text Add to dashboard Cite

Multinuclear solid-state NMR and powder X-ray diffraction data collected for phosphonate materials Zr(O PC H PO ) · 3.6H O and Sn(O PC H PO ) (O POH) · 3.09H O have resulted in the layered structure, where the phosphonic acids cross-link the layers. The main structural motif (the 111 connectivity in the PO group) has been established by determination of chemical shift anisotropy parameters for phosphorus nuclei in the phosphonate groups. An analysis of the variable-temperature P T measurements and the shapes of the phosphorus resonances in the P static NMR spectra have resulted in the dipolar mechanism of the phosphorus spin-lattice relaxation, where the rotating phenylene rings reorient dipolar vectors P H as a driving force of the relaxation process. It has been found that water protons do not affect the P T times. The activation energy of the phenylene rotation in both compounds has been determined as low as 12.5 kJ/mol. The interpretation of the phosphorus relaxation data has been independently confirmed by the measurements of H T times for protons of the phenylene rings.

show abstract

Section: Introductionmentioning

confidence: 99%

Layered metal(IV) phosphonate materials: Solid‐state ¹H, ¹³C, ³¹P NMR spectra and NMR relaxation

Sheikh

Bakhmutov

Clearfield

2018

Magnetic Reson in Chemistry

View full text Add to dashboard Cite

show abstract

“…But the remaining αZrP changes its crystalline structure from the layered form, monoclinic αZrP, to a 3D, tetragonal τ‐zirconium phosphate (τZrP). τZrP was recently reported by Andersen et al., PDF 87–2097, after a previous report by Clearfield et al . using the name ϵ ZrP.…”

Section: Resultsmentioning

confidence: 78%

Solvent‐Free Synthesis of Nano Zirconium Phenylphosphonates with Molten Phenylphosphonic Acid

Contreras-Ramírez

Tomlin

Day

et al. 2020

Chemistry A European J

View full text Add to dashboard Cite

Nanosized a-zirconium phenylphosphonate particles were successfully prepared by the reactionb etween different zirconiums ources and molten phenylphosphonic acid in the absence of solvent. The resultant nanoplates exhibit particle sizes in the range of 15 to 30 nm. The use of at opotactic anion exchange methods tarting from a-zirconium phosphate instead resultedi nt he generation of 15 to 180 nm plates, while also resulting in nanoparticles with a higher degree of crystallinity.T he topotactic anione xchange of the phosphate groups by phenylphosphonate groups could be performed to completion when performed in molten phenylphosphonic acid. Characterization of both the final products as well as the individual steps in the anion exchange were performed by powder XRD, fast neutron activation analysis,T GA, FTIR spectroscopy,T EM, solid-state NMR and XPS.[a] A.Supporting information and the ORCID identification number(s) for the author(s) of this article can be found under: https://doi.

show abstract

“…Zirconium phosphate is one of the most effective inorganic ion exchangers for alkali-metal cations (4j. Zirconium does not participate in the ionic exchange but does significantly improve the ion-exchange capabilities of the phosphate group (5). The advantages of zirconium phosphate over other metal complexes in ion exchange processes are: it has a stable valence state and will not dissociate from the phosphate if the reaction conditions change (3); it is non-toxic; and it is relatively inexpensive Anionic organic ion exchangers are used to separate two or more negatively charged species; cationic exchanger?…”

Section: Ion Exchangementioning

confidence: 99%

Ion-exchange behavior of alkali metals on treated carbons

Mohiuddin¹,

Hata²,

Tolan³

1983

View full text Add to dashboard Cite

More on crystalline zirconium phosphates

Cited by 39 publications

References 11 publications

Layered metal(IV) phosphonate materials: Solid‐state ¹H, ¹³C, ³¹P NMR spectra and NMR relaxation

Layered metal(IV) phosphonate materials: Solid‐state ¹H, ¹³C, ³¹P NMR spectra and NMR relaxation

Solvent‐Free Synthesis of Nano Zirconium Phenylphosphonates with Molten Phenylphosphonic Acid

Ion-exchange behavior of alkali metals on treated carbons

Contact Info

Product

Resources

About

More on crystalline zirconium phosphates

Cited by 39 publications

References 11 publications

Layered metal(IV) phosphonate materials: Solid‐state 1H, 13C, 31P NMR spectra and NMR relaxation

Layered metal(IV) phosphonate materials: Solid‐state 1H, 13C, 31P NMR spectra and NMR relaxation

Solvent‐Free Synthesis of Nano Zirconium Phenylphosphonates with Molten Phenylphosphonic Acid

Ion-exchange behavior of alkali metals on treated carbons

Contact Info

Product

Resources

About

Layered metal(IV) phosphonate materials: Solid‐state ¹H, ¹³C, ³¹P NMR spectra and NMR relaxation

Layered metal(IV) phosphonate materials: Solid‐state ¹H, ¹³C, ³¹P NMR spectra and NMR relaxation