Cu-Mg powders and ribbons characterization and catalystic tests reactions

Á Molnár, M. Varga, G. Mulas, M. Mohai, I. Bertóti, A. Lovas, G. Cocco

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

Cu15Mg85 and Cu3Mg97 alloy powders, prepared by mechanical alloying of the constituent elements and Cu78Mg22 and Cu14.5Mg85.5 ribbons made by rapid quenching were characterized by physical methods (DSC, XRD, and XPS). Carbon and oxygen impurities and Mg (mainly as oxide) were detected by XPS of the as-received samples, and only the Cu78Mg22 ribbon was shown to have copper on the surface. The powders, in turn, are the only samples possessing Cu° measured by the N2O titration method. The catalytic properties of the specimens were tested in the dehydrogenation of 2-propanol and in the one-step synthesis of methyl isobutyl ketone (MIBK) from acetone. The Cu15Mg85 powder, is the only alloy exhibiting satisfactory catalytic performance: MIBK could be isolated in a yield of 35%. The data indicate that copper species determined by N2O titration are involved in the catalytic reactions.

Original languageEnglish
Pages (from-to)1078-1082
Number of pages5
JournalMaterials Science and Engineering A
Volume304-306
Issue number1-2
DOIs
Publication statusPublished - May 31 2001

Fingerprint

Powders
ribbons
Ketones
Titration
ketones
titration
Copper
X ray photoelectron spectroscopy
Rapid quenching
copper
2-Propanol
Mechanical alloying
Propanol
Dehydrogenation
dehydrogenation
Acetone
Oxides
acetone
alloying
Carbon

Keywords

  • Alloy powders and ribbons
  • Copper
  • Magnesium
  • Methyl isobutyl ketone

ASJC Scopus subject areas

  • Materials Science(all)

Cite this

Cu-Mg powders and ribbons characterization and catalystic tests reactions. / Molnár, Á; Varga, M.; Mulas, G.; Mohai, M.; Bertóti, I.; Lovas, A.; Cocco, G.

In: Materials Science and Engineering A, Vol. 304-306, No. 1-2, 31.05.2001, p. 1078-1082.

Research output: Contribution to journalArticle

Molnár, Á ; Varga, M. ; Mulas, G. ; Mohai, M. ; Bertóti, I. ; Lovas, A. ; Cocco, G. / Cu-Mg powders and ribbons characterization and catalystic tests reactions. In: Materials Science and Engineering A. 2001 ; Vol. 304-306, No. 1-2. pp. 1078-1082.
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AU - Varga, M.

AU - Mulas, G.

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AU - Bertóti, I.

AU - Lovas, A.

AU - Cocco, G.

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