Detail publikačního výsledku

Improved hydrogen sorption kinetics in Mg modified by chosen catalysts

ČERMÁK, J.; KRÁL, L.; ROUPCOVÁ, P.

Originální název

Improved hydrogen sorption kinetics in Mg modified by chosen catalysts

Anglický název

Improved hydrogen sorption kinetics in Mg modified by chosen catalysts

Druh

Článek WoS

Originální abstrakt

Hydrogen sorption characteristics were investigated in Mg modified by ten chosen catalyzing additives X = Mg2Si, Mg2Ge, Mg17Al12, Mg5Ga2 , NaCl, LiCl, NaF, LiF and by two combinations Ni + Mg(17)Al(12 )and Ni + Mg2Si. Amorphous carbon (CB) was used as an antisticking component. It was found that optimum content of both X and CB was between 10 and 14 wt %. To assess the effect of X itself upon the sorption kinetics, concentration of both X and CB was fixed to about 12 wt %. The shortest desorption times t(09) (time to desorption of 90 pct of stored hydrogen) showed alloys with X = NaF, Mg2Si, Mg2Ge and NaCl. Careful measurements of equilibrium hydrogen pressure, p(eq) at 623 K showed an increase in p(eq) for added chlorides, fluorides, Mg2Ge and also for Mg2Si. TPD experiments revealed desorption peaks for X = NaCl, LiF shifted down to temperatures as low as 597 K. (C) 2019 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.

Anglický abstrakt

Hydrogen sorption characteristics were investigated in Mg modified by ten chosen catalyzing additives X = Mg2Si, Mg2Ge, Mg17Al12, Mg5Ga2 , NaCl, LiCl, NaF, LiF and by two combinations Ni + Mg(17)Al(12 )and Ni + Mg2Si. Amorphous carbon (CB) was used as an antisticking component. It was found that optimum content of both X and CB was between 10 and 14 wt %. To assess the effect of X itself upon the sorption kinetics, concentration of both X and CB was fixed to about 12 wt %. The shortest desorption times t(09) (time to desorption of 90 pct of stored hydrogen) showed alloys with X = NaF, Mg2Si, Mg2Ge and NaCl. Careful measurements of equilibrium hydrogen pressure, p(eq) at 623 K showed an increase in p(eq) for added chlorides, fluorides, Mg2Ge and also for Mg2Si. TPD experiments revealed desorption peaks for X = NaCl, LiF shifted down to temperatures as low as 597 K. (C) 2019 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.

Klíčová slova

Hydrogen storage; Mg alloys; Carbon black; Catalysis

Klíčová slova v angličtině

Hydrogen storage; Mg alloys; Carbon black; Catalysis

Autoři

ČERMÁK, J.; KRÁL, L.; ROUPCOVÁ, P.

Rok RIV

2020

Vydáno

29.03.2019

Nakladatel

PERGAMON-ELSEVIER SCIENCE LTD

Místo

OXFORD

ISSN

0360-3199

Periodikum

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY

Svazek

44

Číslo

16

Stát

Spojené království Velké Británie a Severního Irska

Strany od

8315

Strany do

8324

Strany počet

10

URL

https://www.sciencedirect.com/science/article/pii/S0360319919306688

BibTex

@article{BUT163604,
  author="Jiří {Čermák} and Lubomír {Král} and Pavla {Roupcová}",
  title="Improved hydrogen sorption kinetics in Mg modified by chosen catalysts",
  journal="INTERNATIONAL JOURNAL OF HYDROGEN ENERGY",
  year="2019",
  volume="44",
  number="16",
  pages="8315--8324",
  doi="10.1016/j.ijhydene.2019.02.084",
  issn="0360-3199",
  url="https://www.sciencedirect.com/science/article/pii/S0360319919306688"
}