Roberto Esposito

Boosting Peroxide Reactivity: New Mn(II) Chelidamate Catalysts for Efficient Low-Temperature Bleaching

Immacolata Manco, Vincenzo Langellotti, Maria Elena Cucciolito, Carlo De Luca et autres

Abstract The development of efficient catalytic systems for low-temperature bleaching is a key challenge for reducing energy consumption in laundry processes. In this work, five manganese(II) complexes derived from chelidamic acid were designed, synthesized, and evaluated as bleaching catalysts for the activation …

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Mechanochemistry in Waste Valorization: Advances in the Synthesis of Catalysts, Polymers, and Functional Materials

Arthur Abinader Vasconcelos, Larissa Carla Pinheiro Gatti, Vanessa Albuquerque de Mescouto, Alex de Oliveira et autres

The growing accumulation of waste from diverse human activities has intensified the search for sustainable strategies. Mechanochemistry offers a promising pathway, transforming residues into high-value products with reduced energy demand, shorter reaction times, and minimal use of solvents and reagents. Various wastes—including …

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Iron-Catalyzed Synthesis of 4-oxo-1,3-dioxolanes (DOXs) Using Lactic Acid: From Homogeneous to Heterogeneous Behaviors

Massimo Melchiorre, Maria Elena Cucciolito, Roberto Esposito, Vincenzo Langellotti et autres

High Resolution Image Download MS PowerPoint Slide This work investigates the use of simple iron(III) and iron(II) salts (FeSO 4, Fe(NO 3 ) 3, Fe(OAc) 2, FeCl 2, FeBr 2, Fe(ClO 4 ) 2, Fe(BF 4 ) 2, FeCl 3, and Fe(ClO …

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Neoteric Solvents for Metal-Catalyzed Coupling Reactions

Vincenzo Langellotti, Massimo Melchiorre, Francesco Ruffo, Maria Elena Cucciolito et autres

Abstract Catalysis is a green methodology aimed at optimizing synthetic procedures by simplifying the design of target molecules and reducing energy and material consumption. However, catalytic reactions often rely on polar aprotic solvents, such as dimethylformamide (DMF) or acetonitrile, which present environmental …

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Homogeneous Zn(II) salts as efficient Lewis acid catalysts for the esterification of levulinic acid with diols

Massimo Melchiorre, Vincenzo Langellotti, Giuseppe Campanile, Maria Elena Cucciolito et autres

The valorization of renewable feedstocks to produce biochemicals and biofuels is an essential focus of contemporary research, with non-food crop biomass emerging as a cost-effective and environmentally friendly option. Among the chemicals derived from lignocellulosic biomass, levulinic acid (LAH) is a notable …

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Continuous flow mechanochemical synthesis of Zr-MOF as effective catalyst for 4-nitrophenol reduction

Ana Isabel Martín-Perales, Thomas Len, Roberto Esposito, Irene Malpartida et autres

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Glycerol: A green solvent for synthetic chemistry

Alex de Oliveira, Massimo Melchiorre, Ana Alice Farias da Costa, Linéia Soares da Silva et autres

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Heterogeneous Brønsted Catalysis in the Solvent-Free and Multigram-Scale Synthesis of Polyalcohol Acrylates: The Case Study of Trimethylolpropane Triacrylate

Massimo Melchiorre, Maria Elena Cucciolito, Roberto Esposito, S. Silvestro et autres

This article presents a thorough investigation into the synthesis of trimethylolpropane triacrylate (TMPTA) via the esterification reaction of trimethylolpropane (TMP) with acrylic acid using Amberlite™ 120 IR (H+), Amberlyst® 15, and Dowex™ 50WX8 resins as heterogeneous catalysts. Preliminary comparative tests explored the …

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Homogeneous Zn(Ii) Salts as Efficient Lewis Acid Catalysts for the Esterification of Levulinic Acid with Diols

Roberto Esposito, Massimo Melchiorre, Vincenzo Langellotti, Giuseppe Campanile et autres

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Biodiesel from Waste Cooking Oil: Highly Efficient Homogeneous Iron(III) Molecular Catalysts

Vincenzo Langellotti, Massimo Melchiorre, Maria Elena Cucciolito, Roberto Esposito et autres

This article presents an efficient iron(III) molecular catalyst for the production of biodiesel from waste vegetable oils. The approach involved an initial screening of eight salophen complexes with various substituents on the arene rings, leading to the selection of the simplest unsubstituted …

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Unveiling Stereo‐Electronic Effects in Homogeneous Catalysis Integrating Theory and Experiments: the Potential of Dimeric Iron(III) Salen Complexes in Methyl Levulinate Transesterification

Fulvio Perrella, Vincenzo Langellotti, Edoardo Buttarazzi, Maria Elena Cucciolito et autres

Abstract Biomass represents an abundant and renewable source of raw materials that can be effectively converted into intermediates and base chemicals. Among these, levulinic acid has garnered significant attention due to its direct derivation from lignocellulosic biomass and the presence of two …

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Catalysis for Oleochemical Platforms

Maria Elena Cucciolito, Martino Di Serio, Roberto Esposito, Massimo Melchiorre et autres

Abstract The present review articles the most recent efforts, made in the Department of Chemical Sciences of the University of Naples Federico II, in the catalytic treatment of biomasses derived from vegetable oils. The review is focused on several technologies aimed at …

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