M
Marco A. Fraga
Researcher at Instituto Militar de Engenharia
Publications - 72
Citations - 2529
Marco A. Fraga is an academic researcher from Instituto Militar de Engenharia. The author has contributed to research in topics: Catalysis & Chemistry. The author has an hindex of 27, co-authored 62 publications receiving 2182 citations. Previous affiliations of Marco A. Fraga include State University of Campinas & Michigan Career and Technical Institute.
Papers
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Journal ArticleDOI
Properties of Carbon-Supported Platinum Catalysts: Role of Carbon Surface Sites
Marco A. Fraga,Elizabete Jordão,M. J. Mendes,Maria A. Freitas,Joaquim L. Faria,José L. Figueiredo +5 more
TL;DR: The effect of oxidation treatments of the support on the properties of carbon-supported platinum catalysts has been analyzed in this paper, where a set of activated carbon carriers has been prepared by oxidative treatments of a commercial carbon in liquid as well as in gas phase.
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Role of dehydration catalyst acid properties on one-step DME synthesis over physical mixtures
F.S. Ramos,A.M. Duarte de Farias,Luiz E.P. Borges,José Luiz Fontes Monteiro,Marco A. Fraga,Eduardo Falabella Sousa-Aguiar,Lucia G. Appel +6 more
TL;DR: In this article, it was shown that the determining rate of DME direct synthesis is determined by the acid properties of the dehydrating catalyst, i.e., its acid strength and number of acid sites.
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Obtaining CeO2–ZrO2 mixed oxides by coprecipitation: role of preparation conditions
Sonia Letichevsky,Claudio A. Téllez,Roberto R. de Avillez,Maria Isabel Pais da Silva,Marco A. Fraga,Lucia G. Appel +5 more
TL;DR: In this article, the effects brought about by the cerium salt precursor ((NH 4 ) 2 Ce(NO 3 ) 6 or Ce( NO 3 ) 3 ), the introduction of drying and aging steps as well as pH controlling upon precipitation were analyzed.
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Production of renewable hydrogen from aqueous-phase reforming of glycerol over Pt catalysts supported on different oxides
TL;DR: In this article, the performance of Pt-based catalysts supported on different oxides (Al2O3, ZrO2, MgO and CeO2) is studied on glycerol reforming.
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Ozonation of model organic compounds catalysed by nanostructured cerium oxides
Carla A. Orge,José J.M. Órfão,Manuel Fernando R. Pereira,Andréa M. Duarte de Farias,Raimundo Crisostomo Rabelo Neto,Marco A. Fraga +5 more
TL;DR: Cerium oxides prepared by the precipitation method and hydrothermal synthesis, with distinct morphologies and particle size, were tested as catalysts in the ozonation of selected organic compounds.