Hydrogen evolution
On the kinetics of the hydrogen evolution reaction on Ni-MoOx composite catalysts in alkaline solutions
... Hydrogen evolution is the most frequent cathodic reaction in industrial elec- trolytic processes and has been recognized as a valuable fuel that may well re- place oil as an energy ...
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Nanoporous Gold Surface: An Efficient Platform for Hydrogen Evolution Reaction at Very Low Overpotential Anandhakumar Sukeri and Mauro Bertotti
... A nanostructured porous gold film (NPGF) was fabricated onto a gold electrode surface by an electrochemical approach involving anodization followed by electrochemical reduction in absence of binary alloys, templates and ...
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Hydrogen evolution and consumption in AOT–isooctane reverse micelles by Desulfovibrio gigas hydrogenase
... The enzyme hydrogenase isolated from the sulphate reducing anaerobic bacterium Desulfovibrio gigas was encapsulated in reverse micelles of AOT–water–isooctane. The enzyme ability to consume molecular hydrogen was ...
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SURFACE EFFECTS IN THE HYDROGEN EVOLUTION REACTION ON NI-ZN ALLOY ELECTRODES IN ALKALINE-SOLUTIONS
... Open-circuit relaxation curves obtained for the Ni-Zn elec- trode: A, after long time polarization and, B, for the electrode kept at the open-circuit potential.. of parameters A,[r] ...
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J. Braz. Chem. Soc. vol.12 número6
... The hydrogen evolution mediated 5,6-dimethyluracil (5,6-DMU) film disordering and subsequent reordering was studied in situ in sulfuric acid solution on Au (111) using STM and cyclic ...the hydrogen ...
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On the suppression of cathodic hypochlorite reduction by electrolyte additions of molybdate and chromate ions
... selectivity for hydrogen evolution in chlorate electrolytes [15]. However, if a smooth and relative stable substrate material, free from oxides catalyzing chlorate reduction, is used the Cr(VI) level in the ...
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Mat. Res. vol.8 número2
... effect of phosphating time was also evaluated, and specimens were phosphated for 4 and 18 hours. To evaluate the corrosion performance of phosphated and unphosphated specimens, a corrosion test based on monitoring ...
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Quím. Nova vol.28 número6
... very steep cathodic current increase at the right and left hand side of the plot, which are due to anodic oxygen and cathodic hydrogen evolution. The peaks and waves between electrochemical gas evolutions ...
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J. Braz. Chem. Soc. vol.28 número9
... absorption spectroscopy (XAS), and the on line DEMS measurements showed the production of CO, suppression of methane and ethylene formations, and diminishing of the hydrogen evolution [r] ...
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Homologous expression of a subcomplex of Pyrococcus furiosus hydrogenase that interacts with pyruvate ferredoxin oxidoreductase.
... MV-linked hydrogen evolution activities, the OE-SHI Dimer exhibited only five-fold less activity with a physiological electron donor, in this case the enzyme POR, compared to native SHI and its true ...
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J. Braz. Chem. Soc. vol.27 número12
... rings than does 1a, but is still not planar (Table 3). As in 1a, no π···π interactions are exhibited by 1b, but the number of different C−H···π intermolecular interactions is reduced to one. The most important ...
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J. Braz. Chem. Soc. vol.22 número8
... Traditionally, hydrogen is produced from natural gas steam reforming from fossil fuels making the effective implementation of hydrogen economically and environmentally ...for hydrogen production from ...
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Effects of the hydrogen potential and fungicide treatment on Pitaya seed germination
... ABSTRACT. The objective of the present study was to evaluate pitaya seed germination under different hydrogen potentials, with or without fungicide treatment. A completely randomized design was employed under a 3 ...
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Braz. J. Phys. vol.39 número2A
... four hydrogen bonds, this per- centage decreases when the temperature increases, reaching 20 % when T = 360 ...the hydrogen bond definition used, amongst other things, the results from different simula- ...
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Emerging melt quality control solution technologies for aluminium melt
... dissolved hydrogen concentration, the analyser also has a built in data logger that allows both hydrogen and temperature readings to be recorded and subsequently downloaded onto a PC ...
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Commentary on the Liquid Metallic Hydrogen Model of the Sun: Insight Relative to Coronal Holes, Sunspots, and Solar Activity
... metallic hydrogen are parallel to the solar surface in this ...hexagonal hydrogen planes [7]. As a result, the concen- trations of non-hydrogen elements in the equatorial region of the interior would ...
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Sub-nanoscale surface ruggedness provides a water-tight seal for exposed regions in soluble protein structure.
... curtailing hydrogen bonding with other water ...of hydrogen-bonded neighbors, so that its water-water coordination number (g, rigorously defined in Methods) is maintained and hardly ever lies below g = ...
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J. Braz. Chem. Soc. vol.28 número6
... Magnetite is reduced with pure hydrogen to wustite and then to pure iron. The process is performed as described in Reduction with hydrogen in iron based loop sub-section. The compositions of the gas ...
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Digital evolution.
... Themostimportantdifference, insistsAdami,‘isthepossibility ofrewardstoprogramsifthey accomplishinterestingthings,in thiscasecomputations’.Hedrawsa parallelbetwe[r] ...
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Structure and weak hydrogen bonds in liquid acetaldehyde
... A new model for acetaldehyde has been optimised, and some thermodynamic and structural features of it have been calculated using Monte Carlo simulations. The site charges used, obtained from Mulliken distribution at MP2 ...
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