Title of article
Activation of amorphous Cu-M (M = Ti, Zr or Hf) alloy powders made by mechanical alloying
Author/Authors
Molnلr، نويسنده , , ء. and Domokos، نويسنده , , L. and Katona، نويسنده , , T. and Martinek، نويسنده , , T. and Mulas، نويسنده , , G. Di Cocco، نويسنده , , G. and Bertَti، نويسنده , , I. and Szépvِlgyi، نويسنده , , J.، نويسنده ,
Pages
5
From page
1074
To page
1078
Abstract
Amorphous Cu-M alloy powders (Cu40Ti60, Cu50Zr50 and Cu65Hf35) produced by mechanical alloying are activated by being applied as catalyst in the transformation of various alcohols at elevated temperature (523–573 K). During the dehydrogenation of 2-propanol to acetone and the transformations of allyl alcohol to form propanal and 1-propanol active, stable and selective catalysts are generated from Cu-Zr and Cu-Hf. DSC, XRD and XPS data indicate bulk crystallization and copper segregation to the surface. Due to surface titanium enrichment Cu-Ti proved to be inferior to the other two alloys.
Keywords
mechanical alloying , Amorphous copper alloys , 2-Propanol , Allyl alcohol , Methanol , Dehydrogenation , Isomerization
Journal title
Astroparticle Physics
Record number
2052093
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