Title of article :
The influence of surface functionalization of activated carbon on palladium dispersion and catalytic activity in hydrogen oxidation Original Research Article
Author/Authors :
V.Z. Radkevich، نويسنده , , T.L. Senko، نويسنده , , K. Wilson، نويسنده , , L.M. Grishenko، نويسنده , , A.N. Zaderko، نويسنده , , V.Y. Diyuk، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2008
Pages :
11
From page :
241
To page :
251
Abstract :
Stone-fruit activated carbon (SAC) and modified versions containing acidic oxygen and basic nitrogen groups have been used to prepare palladium catalysts by wet impregnation. Carbon supports and catalysts are investigated by thermo-gravimetric analysis, TPD, oxygen chemisorption, TEM and XPS. The influence of the nature of the functional groups on the dispersion and oxidation state of palladium and its activity in hydrogen oxidation is investigated. Pd dispersion is found to increase with the basic strength of functional groups on the support. XPS reveals that introduction of amine groups in SAC results in an increased proportion of Pd0, resistant to re-oxidation. Palladium catalysts supported on activated carbon modified by diethylamine groups are found to exhibit the highest metal dispersion and greatest activity in hydrogen oxidation.
Keywords :
Surface functional groups , Surface amine groups , Activated carbon , Palladium supported catalysts , Hydrogen oxidation , XPS
Journal title :
Applied Catalysis A:General
Serial Year :
2008
Journal title :
Applied Catalysis A:General
Record number :
1153524
Link To Document :
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