Search Results - "Andrade, Heloysa M. C."

Synthesis and characterization of magnetic mesoporous particles by Morales, Marco A., Mascarenhas, Artur J.S., Gomes, Angelo M.S., Leite, Carlos A.P., Andrade, Heloysa M.C., de Castilho, Caio M.C., Galembeck, Fernando

“…Magnetic mesoporous particles consisting of Fe 3O 4 nanoparticles embedded in a SiO 2 matrix obtained by a simple procedure and presenting unprecedented…”
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Combining Sewage Sludge and Clam Shell Waste to Prepare Adsorbents for Efficient Phosphorous Removal by Souza, Tamille A., Mascarenhas, Artur J. S., Andrade, Heloysa M. C., Santos, Tereza S. M.

“…Effluents containing phosphorous as phosphate ions are frequently discharged in freshwater resources contributing to the eutrophication and directly…”
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Application of full factorial design and Doehlert matrix for the optimisation of beef tallow methanolysis via homogeneous catalysis by Mendonça, Daniel R., Andrade, Heloysa M.C., Guimarães, Paulo R.B., Vianna, Regina F., Meneghetti, Simoni M.P., Pontes, Luiz A.M., Teixeira, Leonardo S.G.

“…The transesterification of triglycerides by means of alkaline catalysts is the most widely used route for biodiesel production and reaction optimisation by…”
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An on-line system using ion-imprinted polymer for preconcentration and determination of bismuth in seawater employing atomic fluorescence spectrometry by Felix, Caio S.A., Silva, Darllen G., Andrade, Heloysa M.C., Riatto, Valeria B., Victor, Mauricio M., Ferreira, Sergio L.C.

“…This work proposes an on-line preconcentration system using ion-imprinted polymer (IIP) for determination of bismuth in seawater employing atomic fluorescence…”
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Efficiency of zeolite MCM-22 with different SiO2/Al2O3 molar ratios in gas phase glycerol dehydration to acrolein by Carriço, Camila S., Cruz, Fernanda T., Santos, Maurício B., Pastore, Heloise O., Andrade, Heloysa M.C., Mascarenhas, Artur J.S.

“…•MCM-22 zeolite is a highly active and selective catalyst in the gas phase dehydration of glycerol to acrolein.•Glycerol conversion and acrolein selectivity is…”
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Gas phase glycerol oxidative dehydration over bifunctional V/H-zeolite catalysts with different zeolite topologies by Silva, Thamyris Q., dos Santos, Maurício B., Santiago, Alex A.C., Santana, Danilo O., Cruz, Fernanda T., Andrade, Heloysa M.C., Mascarenhas, Artur J.S.

“…[Display omitted] •V/H-zeolites of different topologies were tested in glycerol oxidative dehydration.•High glycerol conversions and acrolein selectivities…”
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Partial replacement of cement with granular marble residue: effects on the properties of cement pastes and reduction of CO2 emission by Santos, Tatiane, Gonçalves, Jardel P., Andrade, Heloysa M. C.

“…The effects of CP V Portland cement replacement with granular marble residues were investigated. The physical–chemical properties of the starting materials and…”
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Effect of alkali cations on the CuZnOAl₂O₃ low temperature water gas-shift catalyst by Figueiredo, Renan Tavares, Santos, Marluce S, Andrade, Heloysa M.C, Fierro, Jose L.G

“…Low temperature water gas-shift catalysts containing 1.0% by weight of alkali elements (Li, K, Rb and Cs) were prepared by impregnation of a ternary…”
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Characterization and determination of the thermodynamic and kinetic properties of the adsorption of the molybdenum(VI)–calmagite complex onto active carbon by Ferreira, Sérgio L.C., Andrade, Heloysa M.C., dos Santos, Hilda C.

“…The extraction of the Mo(VI)–calmagite complex by adsorption onto active carbon is investigated in the present paper. Thermodynamic and kinetic properties and…”
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Calcination parameters on phosphogypsum waste recycling by Geraldo, Rodrigo H., Costa, Ana Rita D., Kanai, Julia, Silva, Jefferson S., Souza, Janaína D., Andrade, Heloysa M.C., Gonçalves, Jardel P., Fontanini, Patricia S.P., Camarini, Gladis

“…•Phosphogypsum (PG) was used to obtain β-hemihydrate.•PG calcination conditions affect the β-hemihydrate content.•β-Hemihydrate with low energy consumption can…”
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Oxidative dehydration of glycerol over alternative H,Fe-MCM-22 catalysts: Sustainable production of acrylic acid by dos Santos, Mauricio B., Andrade, Heloysa M.C., Mascarenhas, Artur J.S.

“…Gas-phase oxidative dehydration of glycerol to generate acrylic acid has been studied on bifunctional H,Fe-MCM-22 catalysts aiming at the use of glycerol…”
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Gypsum plaster waste recycling: A potential environmental and industrial solution by Geraldo, Rodrigo H., Pinheiro, Sayonara M.M., Silva, Jefferson S., Andrade, Heloysa M.C., Dweck, Jo, Gonçalves, Jardel P., Camarini, Gladis

“…Gypsum plaster waste (GPW) represents a large fraction of the total construction and demolition wastes generated by society, which may contaminate the soil and…”
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Degradation of oil well cement with sodium chloride content exposed to supercritical carbon dioxide conditions: Temperature and pressure effects by da Silva, Ana C.O., Miranda, Helen B., Andrade, Heloysa M.C., de Melo, Silvio A.B. Vieira, Gonçalves, Jardel P.

“…Understanding the effects of temperature and pressure on the supercritical CO2 degradation of wellbore cement with NaCl content is essential for cementing oil…”
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MWW-type catalysts for gas phase glycerol dehydration to acrolein by Carriço, Camila S., Cruz, Fernanda T., dos Santos, Maurício B., Oliveira, Daniel S., Pastore, Heloise O., Andrade, Heloysa M.C., Mascarenhas, Artur J.S.

“…[Display omitted] •MWW derived materials are active catalysts for gas phase glycerol dehydration.•Higher acrolein selectivity is attained using ITQ-2.•ITQ-2…”
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Reduced coke formation during the gas phase oxidative dehydration of glycerol over ferrierite zeolites synthesized in fluoride medium by dos Santos, Maurício B., Andrade, Heloysa M.C., Mascarenhas, Artur J.S.

“…Ferrierite zeolites were synthesized in fluoride medium with SiO2/Al2O3 molar ratios 18, 22 and 37, using n-butylamine and pyridine as structure directing…”
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Thermogravimetric and spectroscopic study (TG–DTA/FT–IR) of activated carbon from the renewable biomass source Babassu by de Oliveira, Giulyane Felix, de Andrade, Robson Carlos, Trindade, Magno A. G., Andrade, Heloysa M. C., Teodoro de Carvalho, Cláudio

“…Activated carbons (ACs) with well–developed microstructure and high microporosity were obtained from biomass by potassium hydroxide activation. The preparation…”
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CO.sub.2 capture on activated carbons derived from mango fruit seed shells by Correia, Laíse B, Fiuza, Raildo A, de Andrade, Robson C, Andrade, Heloysa M. C

“…Activated carbons were prepared from mango (Mangifera indica L.) fruit seed shells and used as CO.sub.2 capture adsorbents. The pyrolysis of the biomass was…”
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CO.sub.2 capture on activated carbons derived from mango fruit by Correia, Laíse B, Fiuza, Raildo A, de Andrade, Robson C, Andrade, Heloysa M. C

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CO2 capture on activated carbons derived from mango fruit (Mangifera indica L.) seed shells by Correia, Laíse B, Fiuza, Raildo A, de Andrade, Robson C, Andrade, Heloysa M C

“…Activated carbons were prepared from mango (Mangifera indica L.) fruit seed shells and used as CO2 capture adsorbents. The pyrolysis of the biomass was…”
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CO2 capture on activated carbons derived from mango fruit (Mangifera indica L.) seed shells: A TG study by Correia, Laíse B., Fiuza, Raildo A., de Andrade, Robson C., Andrade, Heloysa M. C.

“…Activated carbons were prepared from mango ( Mangifera indica L.) fruit seed shells and used as CO 2 capture adsorbents. The pyrolysis of the biomass was…”
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