Publication detail

Hydrogen desorption from alloys Mg-Cu(-KCl): Cu catalysis in detail

ČERMÁK, J. KRÁL, L. ROUPCOVÁ, P.

Original Title

Hydrogen desorption from alloys Mg-Cu(-KCl): Cu catalysis in detail

Type

journal article in Web of Science

Language

English

Original Abstract

Effect of chemical composition of Mg-xCu based alloys (x = 9.94-58.00 wt %) modified by KCl upon their hydrogen storage performance was studied. Kinetic curves and pressureconcentration isotherms were measured in the ranges up to 60 bar and 388 ?C, respectively. It was observed that desorption rate dc/dt is not significantly influenced by the composition. Unknown Cu-rich phase was detected that has shown a catalytic effect on desorption from a mixture with other phases. Activation energy of hydrogen desorption decreased with increasing x from 180 kJ/mol down to 98 kJ/mol. Average hydride dissociation enthalpy, AH, for the lowest plateau was 75 kJ/mol which is equal to literature value for pure Mg. Slightly lover average value, 67 kJ/mol was obtained for the second plateau and AH for the third one decreased from 70 kJ/mol for the lowest to 49 kJ/mol for the highest x. ? 2021 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.

Keywords

Hydrogen storage; Magnesium alloys; Ball milling; Catalysis; Copper

Authors

ČERMÁK, J.; KRÁL, L.; ROUPCOVÁ, P.

Released

19. 4. 2021

Publisher

PERGAMON-ELSEVIER SCIENCE LTD

Location

OXFORD

ISBN

1879-3487

Periodical

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY

Year of study

46

Number

27

State

United Kingdom of Great Britain and Northern Ireland

Pages from

14494

Pages to

14507

Pages count

14

URL

https://www.sciencedirect.com/science/article/pii/S0360319921003633?via%3Dihub

BibTex

@article{BUT174912,
  author="Jiří {Čermák} and Lubomír {Král} and Pavla {Roupcová}",
  title="Hydrogen desorption from alloys Mg-Cu(-KCl): Cu catalysis in detail",
  journal="INTERNATIONAL JOURNAL OF HYDROGEN ENERGY",
  year="2021",
  volume="46",
  number="27",
  pages="14494--14507",
  doi="10.1016/j.ijhydene.2021.01.193",
  issn="1879-3487",
  url="https://www.sciencedirect.com/science/article/pii/S0360319921003633?via%3Dihub"
}