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Teterin, Yu. A.; Nefedov, V. I.; Ronneau, Claude; Vanbegin, J.; Cara, Jean; Utkin, I. O.; Teterin, A. Yu.; Nikitin, A. S.; Иванов, К. Е.; Vukcevic, L.; Bek-Uzarov, George N.

doi:10.1023/a:1014816126550

Cited by 3 publications

(1 citation statement)

References 3 publications

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“…Moreover, contributions from W 5+ (around 34.5 eV) and W 4+ (around 33.5 eV) were not observed. [ 30–32 ] Concerning the Pt(4f) XPS spectrum of Cs‐Si‐Pt‐300–5 , a clear spectrum could not be obtained, and the signals from the Cs(4d) electrons [ 33 ] were overlapped in the Pt 4+ region. [ 34,35 ] A clear Pt(4d) XPS spectrum of Cs‐Si‐Pt‐300–5 not be obtained.…”

Section: Resultsmentioning

confidence: 99%

Thermal Treatment of a Keggin‐Type Diplatinum(II)‐Coordinated Polyoxotungstate: Formation of Hydrophilic Colloidal Particles and Photocatalytic Hydrogen Production

et al. 2020

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Hydrophilic platinum‐polyoxotungstate colloidal particles formed by a self‐assembly of Cs4[{Pt(OH)2}2·SiW12O40] were successfully obtained by calcining a cesium salt of α‐Keggin‐type diplatinum(II)‐coordinated silicotungstate, Cs4[α‐SiW11O39{cis‐PtII(NH3)2}2]·11H2O (Cs‐Si‐Pt), in air at 300 °C. During the thermal treatment, the structure of the mono‐lacunary Keggin‐type silicotungstate ligand {SiW11O39} transformed to that of {SiW12O40}, and the diplatinum sites in Cs‐Si‐Pt transformed to the platinum hydroxides with the elimination of the ammonia molecules coordinated to the platinum sites. All four cesium ions in Cs4[{Pt(OH)2}2·SiW12O40] could be ion‐exchanged by four tetramethylammonium ions, and hydrophilic [(CH3)4N]4[{Pt(OH)2}2·SiW12O40] colloidal particles were also formed in aqueous solution. The calcined sample acted as a photocatalyst for hydrogen evolution from aqueous triethanolamine (TEOA) under visible light irradiation (λ = ≥440 nm) in the presence of Eosin Y, K5[α‐SiW11{Al(OH2)}O39]·7H2O, and titanium dioxide. Although relatively rapid deactivation was observed, the turnover frequency was 3588 h–1 after 20 min, and the turnover number exceeded 4600 after 3 h of light irradiation.

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Section: Resultsmentioning

confidence: 99%

Thermal Treatment of a Keggin‐Type Diplatinum(II)‐Coordinated Polyoxotungstate: Formation of Hydrophilic Colloidal Particles and Photocatalytic Hydrogen Production

et al. 2020

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Cs salt of tungstophosphoric acid-promoted zirconium titanium phosphate solid acid catalyst: An active catalyst for the synthesis of bisphenols

2014

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A series of novel xCsTPA-ZTP (x = 30, 40, 50, 60 and 80 wt%) solid acid composite catalysts were synthesized by ion-exchange process using cesium nitrate, tungstophosphoric acid (TPA), zirconium titanium phosphate (ZTP) with varied surface areas, acidities and microstructures. Detailed characterizations of the composite catalysts were done by Powder X-ray Diffraction (PXRD), Fourier Transform Infrared (FTIR) Spectroscopy, N 2 adsorption desorption, Scanning Electron Microscopy (SEM-EDS) analysis, X-ray Photoelectron Spectroscopy (XPS) and Temperature Programmed Desorption (TPD). We have studied the catalytic activities, kinetics and reusability of the catalysts. 60CsTPA-ZTP is found to be an effective and re-usable catalyst for the synthesis of bisphenol A (BPA) and bisphenol F (BPF) using acetonitrile as solvent.

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Preparation and Evaluation of Fullers Earth Beads for Removal of Cesium from Waste Streams

Hasan¹,

Ghosh²,

Viswanath³

et al. 2007

Separation Science and Technology

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Cited by 3 publications

References 3 publications

Thermal Treatment of a Keggin‐Type Diplatinum(II)‐Coordinated Polyoxotungstate: Formation of Hydrophilic Colloidal Particles and Photocatalytic Hydrogen Production

Thermal Treatment of a Keggin‐Type Diplatinum(II)‐Coordinated Polyoxotungstate: Formation of Hydrophilic Colloidal Particles and Photocatalytic Hydrogen Production

Cs salt of tungstophosphoric acid-promoted zirconium titanium phosphate solid acid catalyst: An active catalyst for the synthesis of bisphenols

Preparation and Evaluation of Fullers Earth Beads for Removal of Cesium from Waste Streams

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