Zobrazeno 1 - 10
of 50
pro vyhledávání: '"Carmen V. Cáceres"'
Publikováno v:
Adsorption Science & Technology, Vol 13 (1996)
The equilibrium parameters of molybdenum and tungsten adsorption on alumina were compared. Adsorptions were performed from aqueous solutions of monomeric or polymeric ions of these elements. For all solutions tested, molybdenum showed a greater affin
Externí odkaz:
https://doaj.org/article/ed61b8f3be5244e3b35a042aff3c59df
Autor:
Patricia Vázquez, Carmen V. Cáceres, Paula Isabel Villabrille, Pietro Tundo, Valeria Palermo, Gustavo P. Romanelli
Publikováno v:
SEDICI (UNLP)
Universidad Nacional de La Plata
instacron:UNLP
Universidad Nacional de La Plata
instacron:UNLP
This study describes the application of heteropolyacids H₃PMo₁₂O₄₀, H₄SiMo₁₂O₄₀, H₄PMo₁₁VO₄₀, H₅PMo₁₀V₂O₄₀, H₉PMo₆V₆O₄₀, and a hybrid pyridine-modified heteropolyacid with Keggin structure for selec
Autor:
Carmen V. Cáceres, Gustavo P. Romanelli, Pietro Tundo, Paula Isabel Villabrille, Patricia Vázquez
Publikováno v:
Letters in Organic Chemistry. 5:332-335
Autor:
Carmen V. Cáceres, Paula Isabel Villabrille, L. Gassa, Patricia Vázquez, Gustavo P. Romanelli
Publikováno v:
Applied Catalysis A: General. 324:69-76
Heteropolycompounds, where one molybdenum atom of molybdophosphoric acid (M12P) was substituted by one vanadium atom, H 4 PMo 11 VO 40 , were synthesized and doped with Cu 2+ or Fe 3+ . The prepared molybdovanadophosphates were characterized by Fouri
Autor:
Carmen V. Cáceres, Luis Rene Pizzio, Mirta N. Blanco, Juan Carlos Autino, Gustavo Pablo Romanelli, Patricia Vázquez
Publikováno v:
Applied Catalysis A: General. 308:153-160
Catalysts based on tungstophosphoric and molybdophosphoric acids supported on SiMCM-41 and amine-functionalized SiMCM-41 were obtained. They were characterized by FT-IR and 31 P NMR spectroscopies, and their acidity was determined by potentiometric t
Autor:
Luis Rene Pizzio, Maria del Rosario Torviso, Elba N. Alesso, Patricia Vázquez, J. M. Aguirre, Mirta N. Blanco, Carmen V. Cáceres, Graciela Y. Moltrasio, Beatriz Lantaño
Publikováno v:
Applied Catalysis A: General. 287:1-8
Aromatic alkylation reactions were studied using molybdophosphoric and tungstophosphoric acids supported on silica as catalysts. Benzene and toluene alkylation was carried out with benzyl chloride or benzyl alcohol. Also, cyclohexene and cyclohexanol
Autor:
Luis Rene Pizzio, Celso F. Pérez, Patricia Vázquez, Carmen V. Cáceres, Sandra G. Casuscelli, Mónica Elsie Crivello, Mirta N. Blanco, Eduardo R. Herrero, Guillermo E. Ghione
Publikováno v:
Applied Catalysis A: General. 274:115-122
Limonene epoxidation by hydrogen peroxide in the presence of Keggin-type heteropolycompound supported catalysts was studied. Catalysts containing molybdenum or tungsten heteropolycompounds were prepared by pore filling impregnation of carbon or alumi
Publikováno v:
Applied Catalysis A: General. 270:101-111
Molybdovanadophosphate heteropolycompounds, H4PMo 11VO40 and H9PMo6V6O 40 and the corresponding Cs salts, were synthesized. The influence of thermal treatment on their Keggin primary structures and their acidic properties were studied. The presence o
Autor:
Patricia Vázquez, Beatriz Lantaño, Elba N. Alesso, Rosario Torviso, Mirta N. Blanco, Carmen V. Cáceres, Luis Rene Pizzio, J. M. Aguirre, Liliana M. Finkielsztein, Graciela Y. Moltrasio, Magali Erlich
Publikováno v:
Catalysis Letters. 93:67-73
The catalytic performance of tungstophosphoric and molybdophosphoric acids supported on two commercial carbons, for dehydration reactions of several alcohols, was studied. The alcohol conversion depended on their molecular size, while selectivity to
Publikováno v:
Applied Catalysis A: General. 256:125-139
New supported Keggin heteropolyacid (HPA) catalysts were prepared in order to make a contribution to the field of catalyzed acid reactions by means of ecofriendly technologies. The esterification of isoamyl alcohol and acetic acid in gaseous phase wa