Detail publikace

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

ČERMÁK, J. KRÁL, L. ROUPCOVÁ, P.

Originální název

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

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

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.

Klíčová slova

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

Autoři

ČERMÁK, J.; KRÁL, L.; ROUPCOVÁ, P.

Vydáno

19. 4. 2021

Nakladatel

PERGAMON-ELSEVIER SCIENCE LTD

Místo

OXFORD

ISSN

1879-3487

Periodikum

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY

Ročník

46

Číslo

27

Stát

Spojené království Velké Británie a Severního Irska

Strany od

14494

Strany do

14507

Strany počet

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"
}