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Hybrid materials based on aluminum tungstophosphate or tungstosilicate as catalysts in anisole acylation
(Elsevier Science, 2008-04)
New hybrid materials were prepared by the immobilization of aluminum tungstophosphate or tungstosilicate in a polymeric blend formed by polyvinyl alcohol and polyethylene glycol by the freeze-thawing method. The salts ...
Synthesis and characterization of aluminum or copper tungstophosphate and tungstosilicate immobilized in a polymeric blend
(Pergamon-Elsevier Science Ltd, 2008-03)
Aluminum or copper tungstophosphates and tungstosilicates were synthesized and immobilized in a polymeric blend formed by polyvinyl alcohol and polyethylene glycol using the freeze-thawing method. The salts retained the ...
Polymer-immobilized aluminium or copper tungstophosphates and tungstosilicates as new catalysts in anisole acylation
(Elsevier Science, 2006)
New materials with spherical shape were obtained from aluminium or copper salts of tungstophosphoric and tungstosilicic acids immobilized in a polymeric blend prepared with polyvinyl alcohol and polyethylene glycol by the ...
2-Methoxynaphthalene acylation using aluminum or copper salts of tungstophosphoric and tungstosilicic acids as catalysts
(Elsevier Science, 2011-09-03)
Aluminum or copper salts of the tungstophosphoric (TPA) and tungstosilicic (TSA) acids were synthesized. They present interesting characteristics as catalysts because they can have Lewis and/or Brønsted acidity. The salts ...
A contribution to the physicochemical characterization of nonstoichiometric salts of tungstosilicic acid
(Elsevier Science, 2007-06)
Nonstoichiometric cesium and rubidium salts of tungstosilicic acid (TSA) were synthesized by precipitation. These solids are insoluble in water, due to the low solvation energy of large cations, have high specific surface ...
Síntesis y caracterización del dodecatungstosilicato de caprolactamo con fórmula (C₆H₁₁NO)₃H₄[SiW₁₂O₄₀]·6H₂O
(Universidad Autónoma Metropolitana (México). Unidad Azcapotzalco. División de Ciencias Básicas e Ingeniería., 2020)
Fue sintetizado el compuesto 12-tungstosilicato de caprolactamo (C₆H₁₁NO)₃H₄[SiW₁₂O₄₀]·6H₂O, por reacción de soluciones acuosas de caprolactamo y ácido 12- tungstosilícico en relación molar 3:1. El precipitado cristalino ...