Results 291 to 300 of about 4,600,576 (358)

A review of liquid hydrogen aircraft and propulsion technologies

International journal of hydrogen energy
Sustainable aviation is a key part of achieving Net Zero by 2050, and is arguably one of the most challenging sectors to decarbonise. Hydrogen has gained unprecedented attention as a future fuel for aviation, for use within fuel cell or hydrogen gas ...
Saurav Tiwari, Michael Pekris, John J. Doherty   +2 more
semanticscholar   +1 more source

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 ...
openaire   +2 more sources

Hydrogen Production

2018
The importance of hydrogen as fuel for transport and power generation is continuously rising. To meet future demands an efficient and sustainable hydrogen production is required. This chapter introduces different technologies for hydrogen production, purification, and separation.
Hydrogen ProductionGernot Voitic, Birgit Elvira Pichler, Angelo Basile, Adolfo Iulianelli, Karin Malli, Sebastian Bock, Viktor Hacker   +6 more
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Hydrogen nanobubble at normal hydrogen electrode

Journal of Physics: Condensed Matter, 2013
Electrochemically formed hydrogen nanobubbles at a platinum rotating disk electrode (RDE) were detected by re-oxidation charge. The dissolution time course of the hydrogen nanobubbles was measured by AFM tapping topography under open-circuit conditions at stationary platinum and gold single-crystal electrodes.
S, Nakabayashi, R, Shinozaki, Y, Senda, H Y, Yoshikawa   +3 more
openaire   +2 more sources

Catalyzed Hydrogen Spillover for Hydrogen Storage

Journal of the American Chemical Society, 2009
A crucial bottleneck in developing a hydrogen economy is hydrogen storage. This is particularly true for transportation using hydrogen as the fuel for fuel cells. The U.S. Department of Energy has established specific R&D targets for on-board hydrogen storage.
Ralph T, Yang, Yuhe, Wang
openaire   +2 more sources

Theoretical study of silylene insertion into nitrogen-hydrogen, oxygen-hydrogen, fluorine-hydrogen, phosphorus-hydrogen, sulfur-hydrogen, and chlorine-hydrogen bonds

Journal of the American Chemical Society, 1984
Surfaces d'energie potentielle pour les reactions d'insertion du silylene dans NH 3 , H 2 O, HF, PH 3 , H 2 S et ...
Krishnan Raghavachari, Jayaraman Chandrasekhar, Mark S. Gordon, Ken Dykema   +3 more
openaire   +1 more source

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
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CATALYTIC ASYMMETRIC HYDROGENATION*

Annals of the New York Academy of Sciences, 1972
An efficient direct route to optically active α-amino acids has been achieved by a catalytic asymmetric reduction of α-acylaminoacrylic acids.
W S, Knowles, M J, Sabacky, B D, Vineyard   +2 more
openaire   +2 more sources

Solar-to-hydrogen efficiency of more than 9% in photocatalytic water splitting

Nature, 2023
P. Zhou, I. Navid, Yongjin Ma, Yixin Xiao, Ping Wang, Zhengwei Ye, Baowen Zhou, Kailong Sun, Z. Mi   +8 more
semanticscholar   +1 more source

Dictionary of protein secondary structure: Pattern recognition of hydrogen‐bonded and geometrical features

Biopolymers, 1983
W. Kabsch, C. Sander
semanticscholar   +1 more source