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Partial regeneration of Ni-based catalysts for hydrogen production via methane cracking part II: modeling and optimization
Thermo catalytic cracking of methane hydrogen filamentous carbon partial regeneration Ni/g-Al2O3 catalyst kinetic modeling estimation of rate constant
2010/4/8
Partial regeneration of Ni-based catalysts for hydrogen production via methane cracking part II: modeling and optimization.
Absorbing Hydrogen Fluoride Gas to Enhance Crystal Growth（图）
Hydrogen Fluoride Gas Enhance Crystal Growth superconductors optical devices microelectronics
2009/12/15
Two scientists at the U.S. Department of Energy’s (DOE) Brookhaven National Laboratory have developed a method to control the buildup of hydrogen fluoride gas during the growth of precision crystals n...
Hydrogen soil deposition at an urban site in Finland
Hydrogen soil deposition urban site Finland
2009/11/19
Hydrogen deposition velocities (vd) were estimated by field chamber measurements and model simulations. A closed-chamber method was used for soil deposition studies in Helsinki, Finland, at an urban p...
A consistent molecular hydrogen isotope chemistry scheme based on an independent bond approximation
molecular hydrogen isotope chemistry scheme independent bond approximation
2009/11/19
The isotopic composition of molecular hydrogen (H2) produced by photochemical oxidation of methane (CH4) and Volatile Organic Compounds (VOCs) is a key quantity in the global isotope budget of (H2). T...
Hydrogen storage via physisorption: the combined role of adsorption enthalpy and entropy
Adsorption thermodynamics enthalpy-entropy correlation hydrogen physisorption hydrogen storage
2010/4/8
Materials capable of cost-effective on-board hydrogen storage and delivery are currently being sought worldwide as a means to facilitate a hydrogen-based energy transition in the transportation sector...
Release of Major Ions and Hydrogen Peroxide from Homogeneous,Melting Snow
Major Ions Hydrogen Peroxide Melting Snow
2009/10/26
We undertook two laboratory experiments to study the change of concentrations
and the preferential elution of major ions and hydrogen peroxide during melting
of a homogeneous snow pack. The elution ...
Atmospheric hydrogen variations and traffic emissions at an urban site in Finland
Atmospheric hydrogen variations traffic emissions Finland
2009/10/9
Atmospheric hydrogen (H2) mixing ratios were observed over a one year period from summer 2007 to 2008 in Helsinki, Finland. Relatively stable background values of hydrogen were occasionally observed a...
For Future Superconductors, a Little Bit of Lithium May Do Hydrogen a Lot of Good（图）
Future Superconductors Lithium Hydrogen
2009/10/10
Scientists have a long and unsuccessful history of attempting to convert hydrogen to a metal by squeezing it under incredibly high and steady pressures.Metallic hydrogen is predicted to be a high-temp...
Inter Hydrogen Bonded Complexes of Hexadecylaniline and Alkoxy Benzoic Acids : A Study of Crystallization Kinetics
16A+nBA Induced Smectic Phases Crystallization Kinetics Inter Hydrogen Bonding
2010/7/8
Inter Hydrogen Bonded Complexes of Hexadecylaniline and Alkoxy Benzoic Acids : A Study of Crystallization Kinetics.
Time Ordering Effects on Hydrogen Zeeman-Stark Line Profiles in Low-Density Magnetized Plasmas
Time Ordering Low-Density Magnetized Plasmas Hydrogen
2009/9/4
Stark broadening of hydrogen lines is investigated in low-density magnetized plasmas, at typical conditions of magnetic fusion experiments. The role of time ordering is assessed numerically, by using ...
q-exponential distribution in time correlation function of water hydrogen bonds
Water hydrogen bonds q-statistics Cage effect
2010/7/5
In a series of molecular dynamics simulations we analyzed structural and dynamics properties of water at different temperatures (213 K to 360 K), using the Simple Point Charge-Extended (SPC/E) water. ...
Comparative study of selective CO oxidation over Pt-Co-M/Al2O3 catalysts (M=Ce, Mg, Mn, Zr, Fe) in hydrogen-rich streams: effects of a second promoter
Selective CO oxidation promoted Pt catalysts Pt-Co/Al2O3 catalyst fuel cell fuel processor
2010/4/8
The selective CO oxidation over Pt-Co/Al2O3 catalyst in hydrogen-rich streams was studied in the presence of Ce, Mg, Mn, Ze, and Fe as the second promoters. The catalysts were prepared using incipient...
Growth phase dependent hydrogen isotopic fractionation in alkenone-producing haptophytes
Growth phase dependent hydrogen isotopic fractionation alkenone-producing haptophytes
2010/1/20
Recent works have investigated use of the hydrogen isotopic composition of C37 alkenones (δDK37s, lipid biomarkers of certain haptophyte microalgae, as an independent paleosalinity proxy. We discuss h...
Hydrogen cyanide in the upper troposphere: GEM-AQ simulation and comparison with ACE-FTS observations
Hydrogen cyanide GEM-AQ simulation ACE-FTS
2009/7/15
We investigate the spatial and temporal distribution of hydrogen cyanide (HCN) in the upper troposphere through numerical simulations and comparison with observations from a space-based instrument. To...
Anomalous Strong Reflections on High Resolution Seismic Data from the Turkish Shelf of the Eastern Black Sea: Possible Indicators of Shallow Hydrogen Sulphide-Rich Gas Hydrate Layers
Black Sea gas hydrate hydrogen sulphide high-resolution acoustic methods
2009/7/7
Some strong reflections about 3 to 5 m thick were observed at depths of 25-60 metres below the sea floor using deep-towed, 5 kHz subbottom profiler data in the Turkish shelf and upper slope of the Ea...