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Novel Bifunctional Mesoporous Catalysts Based on Preyssler Heteropolyacids for Green Pyrrole Derivative Synthesis
Portilla-Zúñiga, Omar; Sathicq, Ángel; Martínez, José; Rojas, Hugo; De Geronimo, Eduardo; Luque, Rafael; Romanelli, Gustavo P. (MDPI, 2018)In this paper, we report the synthesis of Preyssler heteropolyacids supported on mesoporous alumina in order to obtain materials with acid–base properties. A series of pyrrole derivatives were synthesized using a suitable ... -
Recent Applications of Heteropolyacids and Related Compounds in Heterocycle Synthesis. Contributions between 2010 and 2020
Escobar, Angélica M.; Blustein, Guillermo; Luque, Rafael; Romanelli, Gustavo P. (MDPI, 2021)Over the past two decades, polyoxometalates (POM) have received considerable attention as solid catalysts, due to their unique physicochemical characteristics, since, first, they have very strong Bronsted acidity, approaching ... -
Stability and Activity of Zn/MCM-41 Materials in Toluene Alkylation: Microwave Irradiation vs Continuous Flow
Carraro, Paola M.; Goldani, Bruna S.; Alves, Diego; Sathicq, Ángel; Eimer, Griselda A.; Romanelli, Gustavo P.; Luque, Rafael (MDPI, 2019)Zn/MCM-41 mesoporous materials have been prepared via classic wet impregnation, employing zinc nitrate as precursor and tested for activity and stability in the Friedel-Crafts alkylation of toluene with benzyl chloride ... -
Ternary Hydrotalcites in the Multicomponent Synthesis of 4H-Pyrans
Nope, Eliana; Sathicq, Ángel; Martínez, José J.; Rojas, Hugo; Luque, Rafael; Romanelli, Gustavo P. (MDPI, 2020)Lamellar double hydroxides (LDH) with double divalent cations were synthesized by the co-precipitation method and studied in the multicomponent synthesis of 4H-pyrans. The solids obtained were characterized by X-ray ... -
Whey as an Alternative Nutrient Medium for Growth of Sporosarcina pasteurii and Its Effect on CaCO3 Polymorphism and Fly Ash Bioconsolidation
Chaparro, Sandra; Rojas, Hugo; Caicedo, Gerardo; Romanelli, Gustavo P.; Pineda, Antonio; Luque, Rafael; Martínez, José J. (MDPI, 2021)Whey in large quantities can cause environmental problems when discarded, because it reduces dissolved oxygen and aquatic life. Nonetheless, it could be used as an easily available and economical alternative to reduce ...