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Polyvinyl alcohol-polyethylenglycol blends with tungstophosphoric acid addition: Synthesis and characterization
(Elsevier Science Sa, 2008-04)
New materials, based on a Keggin-structured compound (tungstophosphoric acid) immobilized in a polymeric matrix formed by a blend of polyvinyl alcohol and polyethylenglycol with 400, 2000, and 6000 Da molecular weight, ...
ACIDITY OF H3PW12O40/SiO2 AND CATALYTIC ACTIVITY OF a -PINENE
(Sociedad Chilena de Química, 2003)
Synthesis and characterization of tungstophosphoric acid-modified mesoporous sponge-like TUD-1 materials
(Springer, 2018-07)
Mesoporous sponge-like siliceous materials (TUD-1) were synthesized using TEOS (tetraethylorthosilicate) as a precursor of silica and TEA (triethanolamine) as a mesostructure-directing agent. Different TEOS/TEA molar ratios ...
Tungstophosphoric acid heterogenized onto NH4NH4 ZSM5 as an efficient and recyclable catalyst for the photocatalytic degradation of dyes
(Sociedade Brasileira de Química, 2015-03-05)
Materials based on tungstophosphoric acid (TPA) immobilized on NH4ZSM5 zeolite were prepared by wet impregnation of the zeolite matrix with TPA aqueous solutions. Their concentration was varied in order to obtain TPA ...
Tungstophosphoric acid immobilized on ammonium Y and ZSM5 zeolites: Synthesis, characterization and catalytic evaluation
(Elsevier Science, 2013-02)
Two series of materials based on tungstophosphoric acid (TPA) immobilized on NH4Y and NH4ZSM5 zeolites were prepared by wet impregnation of the zeolite matrix with TPA aqueous solutions. Their concentration was varied in ...
An efficient and green catalytic method for friedländer quinoline synthesis using tungstophosphoric acid Included in a polymeric matrix
(Bentham Science Publishers, 2015-05)
A new, efficient and green methodology for obtaining quinolines based on the use of tungstophosphoric acid included in a polymeric matrix of polyacrylamide is proposed (APTPOL60). The methodology involves the formation ...
Photocatalytic bleaching of aqueous malachite green solutions by UV-A and blue-light-illuminated TiO2 spherical nanoparticles modified with tungstophosphoric acid
(Elsevier Science, 2011-09-01)
Visible-light-responsive spherical TiO2 particles were prepared by the sol–gel method by adding urea as pore-forming agent and tungstophosphoric acid (TPA) in different ratios (20% and 30% w/w) and by annealing at 500 ◦C ...
Influence of the thermal treatment on the physicochemical properties and photocatalytic degradation of 4-chlorophenol in aqueous solutions with tungstophosphoric acid-modified mesoporous titania
(Elsevier Science, 2011-10-03)
Materials based on titania directly modified with tungstophosphoric acid were prepared using titanium isopropoxide as titania precursor and urea as a low-cost pore-forming agent. The obtained mesoporous solids presented ...
Mesoporous titania directly modified with tungstophosphoric acid: Synthesis, characterization and catalytic evaluation
(Elsevier Science, 2009-04)
The materials were synthesized by the sol-gel method, using titanium isopropoxide as precursor and urea as pore-forming agent. During the gelation, an alcoholic solution of tungstophosphoric acid (TPA) was added. Its ...