Search Results - "Rocha, Kleper de Oliveira"

Application of MQL technique using TiO2 nanoparticles compared to MQL simultaneous to the grinding wheel cleaning jet by Lopes, José Claudio, Garcia, Mateus Vinicius, Volpato, Roberta Silveira, de Mello, Hamilton José, Ribeiro, Fernando Sabino Fonteque, de Angelo Sanchez, Luiz Eduardo, de Oliveira Rocha, Kleper, Neto, Luiz Daré, Aguiar, Paulo Roberto, Bianchi, Eduardo Carlos

“…The minimum quantity lubrication + nanofluid technique has proven to be feasible in machining processes, since it has shown potential for improvements through…”
Get full text

Effect of Au doping of Ni/Al2O3 catalysts used in steam reforming of methane: Mechanism, apparent activation energy, and compensation effect by de Oliveira Rocha, Kleper, Marques, Clélia Mara Paula, Bueno, José Maria Correa

“…[Display omitted] •The apparent activation energy of methane steam reforming increases with addition of Au to Ni catalysts.•Au binds at low coordination…”
Get full text

Crystallization Kinetics and Structure Refinement of CaTiO3 Glass-Ceramics Produced by Melt-Quenching Technique by Silveira, Wagner da, Macedo, Wagner Costa, Santos, Gleyson Tadeu de Almeida, Santos, Luis Fernando dos, Fernandes, José Diego, Rocha, Kleper de Oliveira, Teixeira, Silvio Rainho

“…Glass-ceramic materials were obtained by heat treatment (960 ºC for 2, 4, and 6 hs) of glasses with CaCO3 47.50 wt%-TiO2 23.75 wt%-SiO2 23.75-Al2O3 5.00 wt%…”
Get full text

In situ study of structural modifications in Ni-Fe/MgAl2O4 catalysts employed for ethanol steam reforming by Lara, Thais P.N., Petrolini, Davi D., de Oliveira Rocha, Kleper, dos Santos, João B.O., Bueno, José M.C.

“…[Display omitted] •In situ experiments analyzed structural changes of Ni-Fe/MgAl2O4 impacting catalytic activity.•Catalytic tests carried out in conventional…”
Get full text

Adsorbents Produced from Olive Mill Waste and Modified to Perform Phenolic Compound Removal by Kleper de Oliveira Rocha, Brandão, Francisco, Mazierski, Pawel, Gomes, João, Martins, Rui C, Domingues, Eva

“…Olive mill waste (olive pomace, OP, and olive stone, OS) was used in this work to produce adsorbents for the removal of five phenolic acids typically found in…”
Get full text

Photoluminescence of Eu3+-doped CaZrO3 red-emitting phosphors synthesized via microwave-assisted hydrothermal method by Costa Macedo, Wagner, Germano Bispo Junior, Airton, de Oliveira Rocha, Kleper, de Souza Albas, Agda Eunice, Pires, Ana Maria, Rainho Teixeira, Silvio, Longo, Elson

“…•Microwave-assisted hydrothermal method is appropriate to obtain zirconate phosphors.•Luminescent quenching by concentration takes place at concentrations…”
Get full text

Stability of the Photocatalytic Activity of TiO2 Deposited by Reactive Sputtering by Escaliante, Lucas Caniati, Rocha, Kleper de Oliveira, Silva, Jose Humberto Dias da

“…The photocatalytic activity and stability of TiO2 thin films deposited by reactive sputtering were evaluated through many cycles of aqueous methylene blue…”
Get full text

Manganese oxides synthesized via microwave-assisted hydrothermal method: phase evolution and structure refinement by Dib Neto, Roumanos Georges, Macedo, Wagner Costa, Fernandes, José Diego, Souza, Agda Eunice de, Teixeira, Silvio Rainho, Rocha, Kleper de Oliveira, Longo, Elson

“…ABSTRACT Manganese oxides were synthesized during 40 min at 140 ºC via Microwave-Assisted Hydrothermal (MAH) method and treated at different temperatures in…”
Get full text

Photoluminescence of Eu3+-doped CaZrO red-emitting phosphors synthesized via microwave-assisted hydrothermal method by Costa Macedo, Wagner, Germano Bispo Junior, Airton, de Oliveira Rocha, Kleper, de Souza Albas, Agda Eunice, Pires, Ana Maria, Rainho Teixeira, Silvio, Longo, Elson

Get full text