Results 271 to 280 of about 1,745,776 (318)

Hydrogen–hydrogen bonding: The current density perspective

Journal of Computational Chemistry, 2015
Current density plots of closed‐shell intermolecular HH interactions characterized by a bond critical point (BCP) show two vortices separated by a saddle, a pattern which allows for a clear definition of a pair current strength. This HH current strength turns out to be roughly related to the potential energy density at the BCP and then to the ...
Della Porta, Paolo, ZANASI, Riccardo, MONACO, Guglielmo   +2 more
openaire   +2 more sources

Hydrogen storage on fullerenes: hydrogenation of C59N? using C60H36 as the source of hydrogen

Chemical Communications, 2004
C(60)H(36) has been used as the source of hydrogen for the in situ hydrogenation of (C(59)N)(2), leading to C(59)NH(5) as the main reaction product identified by negative-ion mass spectrometry and providing evidence of the usage of C(60) as a storage device for hydrogen.
Yury V, Vasil'ev, Andreas, Hirsch, Roger, Taylor, Thomas, Drewello   +3 more
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Photoreduction of hydrogen peroxide by hydrogen

The Journal of Physical Chemistry, 1976
The photoreduction of hydrogen peroxide in water under hydrogen of up to 100 atm pressure has been investigated. The reaction involves a chain mechanism with the quantum efficiency for the disappearance of hydrogen peroxide being strongly dependent upon the concentration of hydrogen peroxide. A maximum quantum efficiency of about 35 mol/einstein occurs
Richard J. Field, Richard M. Noyes, Dennis Postlethwaite   +2 more
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Hydrogenation by hydrogen bronzes I. Hydrogenation of ethylene by HxMoO3

Journal of Catalysis, 1982
Abstract Hydrogenation of ethylene has been studied on hydrogen molybdenum oxide bronzes prepared by spillover of hydrogen from supported Pt particles. The temperature of the formation and of the outgassing of the bronze, as well as the Pt content, was found to influence the rate of the reaction of ethylene.
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Hydrogenation by hydrogen bronzes II. Hydrogenation of ethylene by HxV2O5

Journal of Catalysis, 1984
Abstract Hydrogen vanadium oxide bronzes have been prepared by spillover of hydrogen from supported Pt particles. The crystallinity of the starting oxide disappears progressively during the insertion of hydrogen so that a bronze with an initial stoichiometry of about H 3.3 V 2 O 5 is quasi-amorphous.
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HYDROGEN IN SEMICONDUCTORS

Annual Review of Materials Research, 2006
▪ Abstract  Hydrogen strongly affects the properties of electronic materials. Interstitial monatomic hydrogen is always electrically active and usually counteracts the prevailing conductivity of the semiconductor. In some materials, however, hydrogen acts as a source of doping.
Van de Walle, C., Neugebauer, J.
openaire   +2 more sources

Hydrogen Electrocatalysis

ChemPhysChem, 2006
AbstractA selection of recent theoretical and experimental studies on electrolytic hydrogen evolution is presented. It is demonstrated with well‐defined model surfaces that this reaction is a very structure‐sensitive process. Crystallographic orientation, defect density and surface composition are parameters that determine the local geometric and ...
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Hydrogen Element and Hydrogen Gas

2015
Features of hydrogen, discovery history of hydrogen, and physical and chemical properties, especially those correlated with the biological effects of hydrogen, are important for the understanding of mechanisms underlying the biological effects of hydrogen. In this chapter, we introduce the formulation, discovery, and physical and chemical properties of
Wenwu Liu, Xuejun Sun, Shigeo Ohta
openaire   +1 more source

Combined anodic and cathodic hydrogen production from aldehyde oxidation and hydrogen evolution reaction

Nature Catalysis, 2021
Tehua Wang, Li Tao, Xiaorong Zhu
exaly  

Plasma pyrolysis for a sustainable hydrogen economy

Nature Reviews Materials, 2022
Guoxing Chen, Xin Tu, Anke Weidenkaff
exaly