Results 61 to 70 of about 143,778 (251)

Revista Espinhaço entrevista Profa. Flaviana Tavares (UFVJM)

Revista Espinhaço, 2019
A Profa. Flaviana Tavares é graduada em Ciências Naturais e Licenciada em Química. Mestre em Agroquímica. Doutora em Química Inorgânica. Professora da UFVJM desde 2009. Nessa entrevista, a Profª. Flaviana Tavares fala sobre um tema importantíssimo para o
Douglas Sathler
doaj   +1 more source

Sustainable biofuel production from fish processing waste: lipase‐catalyzed hydroesterification of tilapia residual oil

Biofuels, Bioproducts and Biorefining, EarlyView.
Abstract Fishing waste and byproducts, whether naturally occurring or from industrial processing, are important sources of high‐value compounds. Fertilizers, biomaterials, cosmetics, biolubricants, and biodiesel are some of the substances that can be obtained from these residues. The objective of this study was to conduct a theoretical and experimental
Patrick da Silva Sousa, Francisco Simão Neto, Paulo Gonçalves de Sousa Junior, Marcos Carlos de Mattos, Maria Alexsandra de Sousa Rios, Aluísio Marques da Fonseca, Diego Lomonaco, José C. S. dos Santos   +7 more
wiley   +1 more source

Implantación de las TIC en la materia Química Inorgánica

Enseñanza de las Ciencias, 2013
A lo largo de los años hemos observado el desinterés de los estudiantes en las en la materia de Química Inorgánica, perteneciente al curso de Ingeniería Química, la poca autonomía para estudiar y como consecuencia un bajo rendimiento. Buscando contribuir
Ana Cristina Barreto Leite, Marco Antonio Barreto Leite   +1 more
doaj   +3 more sources

Fe─Co Synergism in the Heterogeneous Catalytic Conversion of Cyclohexane to KA Oil

ChemCatChem, EarlyView.
This research aimed to investigate the potential of heterogeneous Fe‐Co catalysts supported on Alumina in the oxidation of cyclohexane to cyclohexanol and cyclohexanone (KA oil). Different catalysts have been synthesized by sol‐immobilization, wetness impregnation and inverse microemulsion, revealing a different catalytic activity and selectivity ...
Marta Stucchi, Alessandro Vomeri, Lorenzo Sommaruga, Erisa Fero, Ana Hungria, Ilaria Barlocco, Laura Prati   +6 more
wiley   +1 more source

Use of Hg-Electroplated-Pt Ultramicroelectrode for Determining Elemental Sulphur in Naphtha Samples

Journal of Analytical Methods in Chemistry, 2012
This paper describes the applicability of a Hg-electroplated-Pt ultramicroelectrode in the quantification of elemental sulphur in naphtha samples by square-wave voltammetry. A reproducible deposition methodology was studied and is reported in this paper.
Carlos Eduardo de Andrade, Flávia C. de Souza, Daniella R. Fernandes, Sérgio A. S. Machado, Eliane D'Elia   +4 more
doaj   +1 more source

Magnetic Nanoparticles: Co@SiO2, Co@Au and Co@Pt

Eclética Química, 2018
Nanotechnology is the understanding and control f matter at dimensions of roughly 1 – 100 nm. At the nanoscale, the properties like electrical conductivity and mechanical strength are not the same as the materials with particles in dimensions much more ...
Vagner Sargentelli, Antônio A. P. Ferreira   +1 more
doaj   +1 more source

Profile of CNPq productivity research fellows in the Chemistry area based on the Lattes Platform [PDF]

, 2014
The Lattes Platform, an information system maintained by the Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq), is the main source of information on Brazilian researchers.
Alves, Alexandre Donizeti, Soma, Nei Yoshihiro [UNIFESP], Yanasse, Horacio Hideki [UNIFESP]   +2 more
core   +2 more sources

Shedding Light on the Precatalytic Mixture of Pd(OAc)2 and Cooperating Bipyridone Ligands for the C─H Functionalization of Arenes

ChemCatChem, EarlyView.
The reactions of the common palladium precursors Pd(OAc)2 and PdCl2 and cooperating bipyridone ligands leads to well defined complexes which are general precatalysts for the direct C─H arylation of arenes, more active than Pd(OAc)2/ligand mixtures in nonpolar solvents.
Francisco Villalba, Sara Martín‐Martín, Ana C. Albéniz   +2 more
wiley   +1 more source

Modulation of the Acidity of HY, HBETA, and HZSM‐5 Zeolites by Lanthanum Incorporation for Selective Gasoline Desulfurization in the FCC Riser

ChemCatChem, EarlyView.
Desulfurization in the FCC riser is achieved by modifying zeolite catalysts with La3+ ions, promoting H2S formation from thiophenic compounds while suppressing secondary reactions. This approach enhances gasoline quality by increasing selectivity for H2S and enabling efficient condensation and alkylation, supporting cleaner fuel production and ...
Ronaldo C. Santos, Daniel F. Almeida, Anderson C. dos S. Silva, Yiu L Lam, José M. M. Ferreira, D. Ballesteros‐Plata, Enrique Rodríguez‐Castellón, Agustin Martínez, Luiz A. M. Pontes   +8 more
wiley   +1 more source

Carbon‐Driven Enhancement in Zinc Hexacyanoferrate Composites: A Ball‐Milling Approach for High‐Performance Zn‐Ion Batteries

ChemElectroChem, EarlyView.
Structural modification of ZnHCF cathodes via ball‐milling and carbon addition significantly enhances the electrochemical performance of aqueous zinc‐ion batteries, achieving capacities close to 100 mAh g−1. The synergistic effect of carbon with ZnHCF preserves the crystalline structure and facilitates phase transitions, greatly improving the cathode's
Mario García‐Rodríguez, Esteban A. Toledo‐Carrillo, Joydeep Dutta, Diego Cazorla‐Amorós, Emilia Morallón   +4 more
wiley   +1 more source