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Effect of W on PtSn/C catalysts for ethanol electrooxidation
(SPRINGER, 2008)
Binary and ternary Pt-based catalysts were prepared by the Pechini-Adams modified method on carbon Vulcan XC-72, and different nominal compositions were characterized by TEM and XRD. XRD showed that the electrocatalysts ...
Organic/Inorganic heterogeneous silica-based photoredox catalyst for Aza-Henry Reactions
(Wiley VCH Verlag, 2020-03)
The transformation of light into chemical energy is a leitmotiv in the development of sustainable and environmentally concerned chemical processes. Chemists invented original concepts to address this purpose, like photoredox ...
Thermal and Chemical Stability of n-Hexadecanethiol Monolayers on Au(111) in O2 Environments
(Pergamon-Elsevier Science Ltd., 2016-10)
Understanding the mechanisms of degradation of self-assembled monolayers (SAM) is required for their use in molecular devices and in general in long term applications. In this context, we investigated the thermal and ...
Contribuição ao estudo da influência de variáveis de síntese no desempenho de terpolímeros utilizados como melhoradores do índice de viscosidade
(Universidade Federal de Minas GeraisUFMG, 2016-02-24)
Viscosity index improvers are essential for good performance of automotive lubricant oil, because of their ability to reduce the variation of viscosity with temperature. In this work terpolymers were synthesized as viscosity ...
Valorização dos sesquiterpenóides ß-cariofileno e óxido de cariofileno por meio da reação de hidroformilação catalisada por complexos de ródio
(Universidade Federal de Minas GeraisUFMG, 2017-07-27)
Rhodium catalyzed hydroformylation is a convenient method for the synthesis of compounds with properties that make them potentially applicable in fragrances and pharmaceuticals. The hydroformylation of ß -caryophyllene and ...
Multifuncionalidade em compósitos poliméricos de nanotubos de carbono de paredes múltiplas em matriz epóxi
(Universidade Federal de Minas GeraisUFMG, 2017-02-22)
A strategy to obtain multifunctional materials of high performance is the use of carbon nanotubes (CNT) as a filler in polymeric composites , to improve thermal and mechanical properties of these materials. Several parameters ...
Synthesis of natural deep eutectic solvents using a mixture design for extraction of animal and plant samples prior to ICP-MS analysis
(2020-08-15)
Solvents with both low density and viscosity have the advantage of higher extraction efficiency due to lower diffusivity and consequently higher mass transfer. In this study, a mixture design was performed for the synthesis ...
Síntesis y estudios de inducción asimétrica de alfa-cetoacetales macrocíclicos derivados del (1R)-(-)-mirtenal
(25/01/2011)
ABSTRACT: The formation of a σ carbon-carbon bond via nucleophilic addition of organometallic reagents to
carbonyl substrates, constitutes one of the elementary transformations in organic synthesis. Of
course, such ...
Avaliação da eficiência da flotação de minério de grafita utilizando coletor de biodiesel formado por transesterificação
(Universidade Federal de Minas GeraisBrasilENG - DEPARTAMENTO DE ENGENHARIA MINASPrograma de Pós-Graduação em Engenharia Metalúrgica, Materiais e de MinasUFMG, 2021-07-23)
Graphite is one of the minerals with special properties that stand out in areas of Science, such as Materials Engineering. Its lubricating character, chemical inertness, thermal resistance, excellent cleavage shows its ...
A biomassa Capsicum spp. como fonte de bioenergia e adsorção de metais
(Universidade Estadual Paulista (Unesp), 2017-02-23)
O Brasil se encontra entre os países de maior produção agrícola do mundo. Diante desse fato, o país tem se tornado alvo de pesquisadores no que diz respeito à reutilização de resíduos provenientes de atividades agroindustriais. ...