R
Romina Alejandra Frenzel
Researcher at National University of La Plata
Publications - 12
Citations - 134
Romina Alejandra Frenzel is an academic researcher from National University of La Plata. The author has contributed to research in topics: Catalysis & Sulfoxide. The author has an hindex of 7, co-authored 12 publications receiving 110 citations. Previous affiliations of Romina Alejandra Frenzel include National Scientific and Technical Research Council.
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Journal ArticleDOI
Synthesis, characterization and catalytic evaluation of H3PW12O40 included in acrylic acid/acrylamide polymer for the selective oxidation of sulfides
Romina Alejandra Frenzel,D. Morales,Gustavo Pablo Romanelli,Gabriel Sathicq,Mirta N. Blanco,Luis Rene Pizzio +5 more
TL;DR: In this article, a series of hybrid materials (SAPTPA) based on tungstophosphoric acid H 3 PW 12 O 40 (TPA), included in acrylic acid/acrylamide polymer, were synthetized and characterized by FT-IR, XRD, 31 P MAS-NMR, DTA-TGA, and the acidic properties were determined by means of potentiometric titration with n -butylamine.
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Carbon-supported metal-modified lacunary tungstosilicic polyoxometallates used as catalysts in the selective oxidation of sulfides
Romina Alejandra Frenzel,Angel Gabriel Sathicq,Mirta Noemi Blanco,Gustavo Pablo Romanelli,Luis Rene Pizzio +4 more
TL;DR: In this paper, a procedure for oxidizing sulfides to sulfoxides or sulfones using aqueous hydrogen peroxide and a catalytic amount of lacunary tungstosilicic polyoxometallates supported on carbon at low temperatures (20-50°C).
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Tungstophosphoric acid immobilized on ammonium Y and ZSM5 zeolites: Synthesis, characterization and catalytic evaluation
Candelaria Leal Marchena,Candelaria Leal Marchena,Romina Alejandra Frenzel,Silvina del Valle Gómez,Silvina del Valle Gómez,Liliana B. Pierella,Liliana B. Pierella,Luis Rene Pizzio +7 more
TL;DR: In this article, a 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.
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Novel catalyst based on mono- and di-vanadium substituted Keggin polyoxometalate incorporated in poly(acrylic acid-co-acrylamide) polymer for the oxidation of sulfides
TL;DR: In this article, a mixture of polyoxotungstovanadate (POTV) and polyacrylic acid-co-acrylamide gel (PAACA) was synthesized and the acid properties were characterized by means of potentiometric titration with n-butylamine.
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Transition metal-modified polyoxometalates supported on carbon as catalyst in 2-(methylthio)-benzothiazole sulfoxidation
TL;DR: In this paper, a polyoxometalates with lacunary Keggin structure modified with transition metal ions [PW11O39M(H2O)]5−, where M = Ni2+, Co2+, Cu2+ or Zn2+, were synthesized and supported on activated carbon to obtain the PW11MC catalysts.