Iron-oxide-modified nanosized diamond: preparation, characterization, and catalytic properties in methanol decomposition.
Nanosized diamond (UDD), obtained by a detonation procedure, was modified with iron from the corresponding acetylacetonate precursor under various pretreatment conditions. Nitrogen physisorption, X-ray diffraction, temperature-programmed reduction, and FTIR and Mössbauer spectroscopy were used for their characterization. The samples' catalytic behavior in methanol decomposition was also studied. The physicochemical and catalytic properties of the obtained materials (Fe/UDD) were compared with those of other iron-oxide-modified mesoporous supports with different nature and functionality (MCM-48 silica and CMK-1 carbon). The highest catalytic activity and stability was achieved with air-pretreated Fe/UDD.
Tsoncheva
Tanya
T
Institute of Organic Chemistry, BAS, 1113 Sofia, Bulgaria. tsoncheva@orgchm.bas.bg
Ivanova
Ljubomira
L
Paneva
Daniela
D
Dimitrov
Momtchil
M
Mitov
Ivan
I
Stavrev
Stavry
S
Minchev
Christo
C
D000327:Adsorption; D002384:Catalysis; D018130:Diamond / Q000737:chemistry*; D005290:Ferric Compounds / Q000737:chemistry*; D006885:Hydroxybutyrates / Q000737:chemistry; D000432:Methanol / Q000737:chemistry*; D049329:Nanostructures / Q000737:chemistry*; D009584:Nitrogen / Q000737:chemistry; D010422:Pentanones / Q000737:chemistry; D033362:Powder Diffraction; D012680:Sensitivity and Specificity; D017550:Spectroscopy, Fourier Transform Infrared / Q000379:methods; D015204:Spectroscopy, Mossbauer; D013499:Surface Properties; D013696:Temperature
D005290:Ferric Compounds; D006885:Hydroxybutyrates; D010422:Pentanones; C049529:acetyl acetonate; C000499:ferric oxide; D018130:Diamond; D009584:Nitrogen; D000432:Methanol