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Catalytic conversion of glycerol and acetol promoted by metal nanoparticles supported on carbon and molecular sieves

Abstract

Catalysts based on metal nanoparticles (Cu or Ni) supported on carbonaceous materials (activated carbon or carbon nanotubes) and molecular sieves will be prepared, characterized and tested as catalysts in the oxidation of glycerol and acetol. Some methods of synthesis of metallic nanoparticles will be tested (wet impregnation, polyol-based method for the synthesis of Cu nanoparticles and the chemical reduction with N2H4 for the synthesis of Ni nanoparticles, ³-irradiation). Solids used as support will undergo oxidative and/or thermal treatments. The materials will be characterized by appropriate techniques, among which nitrogen adsorption, transmission electron microscopy, X-ray photoelectron spectroscopy, elemental analysis, X-ray diffraction, temperature programmed reduction and titration of surface functional groups. The catalysts will be used in catalytic oxidation of glycerol and acetol in the presence of oxygen, synthetic air or hydrogen peroxide. The oxidation products, especially glyceric acid and dihydroxyacetone, will be quantified by high performance liquid chromatography. The results will be related to the characteristics identified for the catalysts in terms of metal type, metal particle size and surface type of the substrate. According to the results, the reaction conditions must be varied. Adequate catalytic activity of the materials developed in this work could be an interesting alternative for the replacement of catalysts based on Au, which would lead to greater economic feasibility for the conversion of glycerol into higher value-added products through its oxidation. (AU)

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Scientific publications (9)
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
MANTOVANI, MICHELLE; MANDELLI, DALMO; GONCALVES, MARAISA; CARVALHO, WAGNER A. Fructose dehydration promoted by acidic catalysts obtained from biodiesel waste. CHEMICAL ENGINEERING JOURNAL, v. 348, p. 860-869, SEP 15 2018. Web of Science Citations: 4.
SUZUKI, NINA Y.; SANTIAGO, PATRICIA V. B.; GALHARDO, THALITA S.; CARVALHO, WAGNER A.; SOUZA-GARCIA, JANAINA; ANGELUCCI, CAMILO A. Insights of glycerol electrooxidation on polycrystalline silver electrode. Journal of Electroanalytical Chemistry, v. 780, p. 391-395, NOV 1 2016. Web of Science Citations: 10.
GONCALVES, MARAISA; RODRIGUES, RAPHAEL; GALHARDO, THALITA S.; CARVALHO, WAGNER A. Highly selective acetalization of glycerol with acetone to solketal over acidic carbon-based catalysts from biodiesel waste. FUEL, v. 181, p. 46-54, OCT 1 2016. Web of Science Citations: 19.
DAL BOSCO, SANDRA MARIA; GONCALVES, MARAISA; FIGUEIREDO, FLAVIA C. A.; GALHARDO, THALITA; CARVALHO, WAGNER A. Sulfated Pillared Clay as Catalyst in Glycerol Esterification with Caprylic Acid. WASTE AND BIOMASS VALORIZATION, v. 7, n. 5, p. 1279-1288, OCT 2016. Web of Science Citations: 6.
RODRIGUES, RAPHAEL; MANDELLI, DALMO; GONCALVES, NORBERTO S.; PESCARMONA, PAOLO P.; CARVALHO, WAGNER A. Acetalization of acetone with glycerol catalyzed by niobium-aluminum mixed oxides synthesized by a sol-gel process. JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL, v. 422, n. SI, p. 122-130, OCT 2016. Web of Science Citations: 18.
SIMONE, NATHALIA; CARVALHO, WAGNER A.; MANDELLI, DALMO; RYOO, RYONG. Nanostructured MFI-type zeolites as catalysts in glycerol etherification with tert-butyl alcohol. JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL, v. 422, n. SI, p. 115-121, OCT 2016. Web of Science Citations: 10.
GONCALVES, MARAISA; SOLER, FELIPE COELHO; ISODA, NOEMIA; CARVALNO, WAGNER ALVES; MANDELLI, DALMO; SEPULVEDA, JORGE. Glycerol conversion into value-added products in presence of a green recyclable catalyst: Acid black carbon obtained from coffee ground wastes. Journal of the Taiwan Institute of Chemical Engineers, v. 60, p. 294-301, MAR 2016. Web of Science Citations: 6.
GONCALVES, MARAISA; CASTRO, CINTHIA S.; OLIVEIRA, LUIZ C. A.; CARVALHO, WAGNER A. Green acid catalyst obtained from industrial wastes for glycerol etherification. Fuel Processing Technology, v. 138, p. 695-703, OCT 2015. Web of Science Citations: 3.
MICHELLE MANTOVANI; ERIK MODA AGUIAR; WAGNER ALVES CARVALHO; DALMO MANDELLI; MARAISA GONÇALVES. APROVEITAMENTO DE RESÍDUO DE BIODIESEL PARA PREPARAÇÃO DE CARVÕES ÁCIDOS COM ELEVADA ATIVIDADE CATALÍTICA NA REAÇÃO DE ETERIFICAÇÃO DO GLICEROL. Química Nova, v. 38, n. 4, p. 526-532, Maio 2015.

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