Synergetic effect of oxides on hydrogen reaction kinetics of magnesium hydride

Aep Patah, Akito Takasaki, Janusz S. Szmyd

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Citations (Scopus)

Abstract

The kinetics of hydrogen reaction (absorption and desorption) on the MgH2 have been reported to be improved significantly by addition of transition metal oxides as catalysts. Among the oxides reported previously, Cr2O3 seems to improve hydrogen absorption kinetics and ND2O5 for desorption kinetics. The catalytic effect of addition of more than one oxide, however, has not been reported yet. We investigated the hydrogen reaction kinetics of ball milled MgH2 powders added with either Cr2O3 or ZnO together with Nb2O5. In absorption reaction, the hydrogen contents reached 6 wt% and 5.3 wt% in 5 min for the powders added with 1 mol% ZnO + 1 mol% Nb2O5 and with 1 mol% Cr2O3 + 1 mol% Nb2O5, respectively. Those powders desorbed hydrogen up to about 4.5 wt% in 20 min. The significant improvement was not expected if one of the oxides was added separately. The combination of two kinds of oxides might play an important role for improvement of reaction kinetics.

Original languageEnglish
Title of host publicationMaterials Science Forum
Pages1605-1608
Number of pages4
Volume561-565
EditionPART 2
Publication statusPublished - 2007
Event6th Pacific Rim International Conference on Advanced Materials and Processing, PRICM 6 - Jeju
Duration: 2007 Nov 52007 Nov 9

Publication series

NameMaterials Science Forum
NumberPART 2
Volume561-565
ISSN (Print)02555476

Other

Other6th Pacific Rim International Conference on Advanced Materials and Processing, PRICM 6
CityJeju
Period07/11/507/11/9

Fingerprint

Hydrides
Reaction kinetics
Oxides
Magnesium
Hydrogen
Powders
Kinetics
Desorption
Transition metals
Catalysts

Keywords

  • Hydrogen sorption
  • Kinetic
  • Magnesium hydride
  • Mechanical milling
  • Metal oxides

ASJC Scopus subject areas

  • Materials Science(all)

Cite this

Patah, A., Takasaki, A., & Szmyd, J. S. (2007). Synergetic effect of oxides on hydrogen reaction kinetics of magnesium hydride. In Materials Science Forum (PART 2 ed., Vol. 561-565, pp. 1605-1608). (Materials Science Forum; Vol. 561-565, No. PART 2).

Synergetic effect of oxides on hydrogen reaction kinetics of magnesium hydride. / Patah, Aep; Takasaki, Akito; Szmyd, Janusz S.

Materials Science Forum. Vol. 561-565 PART 2. ed. 2007. p. 1605-1608 (Materials Science Forum; Vol. 561-565, No. PART 2).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Patah, A, Takasaki, A & Szmyd, JS 2007, Synergetic effect of oxides on hydrogen reaction kinetics of magnesium hydride. in Materials Science Forum. PART 2 edn, vol. 561-565, Materials Science Forum, no. PART 2, vol. 561-565, pp. 1605-1608, 6th Pacific Rim International Conference on Advanced Materials and Processing, PRICM 6, Jeju, 07/11/5.
Patah A, Takasaki A, Szmyd JS. Synergetic effect of oxides on hydrogen reaction kinetics of magnesium hydride. In Materials Science Forum. PART 2 ed. Vol. 561-565. 2007. p. 1605-1608. (Materials Science Forum; PART 2).
Patah, Aep ; Takasaki, Akito ; Szmyd, Janusz S. / Synergetic effect of oxides on hydrogen reaction kinetics of magnesium hydride. Materials Science Forum. Vol. 561-565 PART 2. ed. 2007. pp. 1605-1608 (Materials Science Forum; PART 2).
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