Recovery of tungsten compounds from spent tungstophosphate …
网页2022年2月1日 · In addition, phosphonium-based ILs with small alkyl chains have low viscosity and hydrophobicity, which render the extraction process easier. The objective of this study is to develop a novel hydrometallurgical process to separate phosphate from spent tungstophosphate catalysts and to recover the tungsten components.
Recovery of tungsten compounds from spent tungstophosphate …
网页2022年2月1日 · A novel hydrometallurgical process was developed for the effective separation of phosphate from spent tungstophosphate catalysts and for recovering useful tungsten compounds. This process involved four steps, namely, leaching, precipitation, and solvent extraction (SX) using phosphonium-based ionic …
网页Tungstophosphate Mesoporous Materials Mohamed A. Ghanem, Abdullah M. Al-Mayouf and Mabrook S. Amer Abstract The work reports a development approach for the synthesis of novel multi-components mesoporous materials of titanium tungstate (meso-TiW) titanium tungstosilicate (meso-TiWSi) and tungstophosphate (meso-TiWP) mixed oxides
Fabrication of Titanium Dioxide and Tungstophosphate …
网页2011年10月5日 · Our results indicate that TiO2 and tungstophosphate (H3PW12O40, abbreviated as PW12) are successfully incorporated into the thin films. The as-prepared (TiO2/PW12)n films show good photocatalytic performance toward methyl orange (MO) solution at pH 2.0, which is attributed to the synergistic effect between TiO2 and PW12.
Titanium (IV) tungstosilicate and titanium (IV) tungstophosphate: …
网页2003年2月14日 · Two new heteropolybasic acid salts based on titanium(IV), namely Ti(IV) tungstosilicate (TiWSi) and Ti(IV) tungstophosphate (TiWP) were synthesised in crystalline forms. These ion-exchange materials have better chemical and thermal stabilities compared to Ti(IV) tungstate, Ti(IV) silicate and Ti(IV) phosphate.
The Wheel‐Shaped Cu20 Tungstophosphate [Cu20Cl (OH)24 …
网页2005年6月6日 · The wheel-shaped [Cu 20 Cl (OH) 24 (H 2 O) 12 (P 8 W 48 O 184 )] 25− ion (see picture; black W, turquoise Cu, yellow P, violet Cl, red O) is the first transition-metal-substituted derivative of [H 7 P 8 W 48 O 184] 33− and incorporates more paramagnetic 3d metal ions than any other polyoxotungstate to date. References.
Effects of Dawson-Type Tungstophosphate on …
网页Furthermore, CdS-PAH/P 2 W 18 film exhibited higher photocurrent response intensity than the simple sum of individual components, and polyoxometalate (P 2 W 18) could act as the photoinduced electron transfer shuttle to efficiently suppress electron–hole recombination in …
Titanium (IV) tungstosilicate and titanium (IV) tungstophosphate: …
网页2003年2月14日 · Ti (IV) tungstosilicate is found to be more stable thermally than Ti (IV) tungstophosphate (loss in ion-exchange capacity was found as 58 and 80%, respectively for samples heated at 200 degrees C).
Progress in Polytungstophosphate and -arsenate(V) Chemistry
网页Recent X-ray crystal structure determinations and n.m.r. spectroscopy contribute to extend and clarify tungstophosphate and -arsenate chemistry. The composition X 2 W 21 (X = P, As) leads to a complete family with it mono-and divacant species and corresponding substituted compounds.
Study on effects of tungstophosphate structures on electrochemically ...
网页2014年12月22日 · In situ fluorescence spectroelectrochemical measurements display that the fluorescence quenching efficiencies of the four composite films under electrochemical stimulation depend on the tungstophosphate structures, demonstrating that the desired electrochemically induced fluorescent switchable materials can be optimized by the choice of ...