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Electronic effect in intermetallic electrocatalysts with low susceptibility to CO poisoning during hydrogen oxidation
(2015-09-14)
This paper reports the results of Hydrogen Oxidation Reaction (HOR) experiments over ordered intermetallic (PtSn and PdSn) nanoparticles under CO-free and CO-covered surface conditions. The activity of PtSn toward the HOR ...
Electrocatalytic activity under oscillatory regime: The electro-oxidation of formic acid on ordered Pt3Sn intermetallic phase
(2013-01-05)
Despite the considerable progress in the understanding of the mechanistic aspects of the oscillatory electro-oxidation of C1 molecules, there are apparently no systematic studies concerning the impact of surface modifiers ...
Electrocatalytic activity under oscillatory regime: The electro-oxidation of formic acid on ordered Pt3Sn intermetallic phase
(2013-01-05)
Despite the considerable progress in the understanding of the mechanistic aspects of the oscillatory electro-oxidation of C1 molecules, there are apparently no systematic studies concerning the impact of surface modifiers ...
Surface diffusion of poisoning species during CO and formic acid oxidation on PtAu surface. The key role of the active site
(Elsevier Science, 2021-01-31)
A comparative study of the Pt and Pt/Au surface towards CO and formic acid oxidation was performed by conventional electrochemical techniques used in combination with an electrochemical flow cell (four-electrode configuration) ...
Silicon poisoning of Pt/Al2O3 catalysts in naphtha reforming
(Studies in Surface Science and Catalysis, 1999)
The silicon poisoning of a Pt/A120.~ catalyst was studied as a model system for
industrial catalysts. Samples were contaminated using methyl- and phenylsubstituted
polyoxysilane (MPSP) during the reforming of cyclohexane. ...
Mapeamento de áreas com potencial de contaminação por uso de agrotóxicos e o panorama das intoxicações exógenas no noroeste do Rio Grande do Sul
(Universidade Federal de Santa MariaBrasilCiências AmbientaisUFSMPrograma de Pós-Graduação em Ciência e Tecnologia AmbientalUFSM Frederico Westphalen, 2021-05-27)
Agricultural activities carried out with the use of pesticides can cause contamination of soil, water and human beings. When found in surface and underground water used for supply and various purposes, pesticides can trigger ...
Surface dental enamel lead levels and antisocial behavior in Brazilian adolescents
(Pergamon-Elsevier B.V. Ltd, 2010-03-01)
Lead poisoning has been reportedly linked to a high risk of learning disabilities, aggression and criminal offenses. To study the association between lead exposure and antisocial/delinquent behavior, a cross-sectional study ...