Publication detail

Improved hydrogen sorption kinetics in Mg modified by chosen catalysts

ČERMÁK, J. KRÁL, L. ROUPCOVÁ, P.

Original Title

Improved hydrogen sorption kinetics in Mg modified by chosen catalysts

Type

journal article in Web of Science

Language

English

Original Abstract

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.

Keywords

Hydrogen storage; Mg alloys; Carbon black; Catalysis

Authors

ČERMÁK, J.; KRÁL, L.; ROUPCOVÁ, P.

Released

29. 3. 2019

Publisher

PERGAMON-ELSEVIER SCIENCE LTD

Location

OXFORD

ISBN

0360-3199

Periodical

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY

Year of study

44

Number

16

State

United Kingdom of Great Britain and Northern Ireland

Pages from

8315

Pages to

8324

Pages count

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"
}