On the performance of porous silica supported VOx catalysts in the partial oxidation of methane

Resource‐Efficient Alkane Selective Oxidation on New Crystalline Solids: Searching for Novel Catalyst Materials

“…This structural feature may be described as a strongly distorted (V=O)O 3 tetrahedron with one very short (terminal) bond at d(V-O) = 1.56 Å and three longer (bridging) bonds at d(V-O) ≈ 1.70 Å [46,47]. The structural similarity to (V=O)O 3 groups on a silica support [65,66] is striking and triggered our interest in the catalytic properties of this compound. In a similar way as it is observed for iron(III) pyrophosphate, substitution of P 5+ by V 5+ is possible [46,47] in TiP 2 O 7 (Fig.…”

Dehydration of fructose and glucose to 5-hydroxymethylfurfural over Al-KCC-1 silica

“…Silica mesoporous materials with high surface area and good thermal stability can easily functionalize [4][5][6] . Silica mesoporous materials are generally used as adsorbents, catalysts and catalyst supports [7][8][9][10][11] . Pure silica mesoporous materials have relatively low acidity due to the chemically inert silicate framework so they are not effectual for doing catalytic chemical reactions.…”

Enhanced formaldehyde selectivity in catalytic methane oxidation by vanadia on Ti-doped SBA-15

“…It is generally accepted that the presence of molecular-tetrahedral or lowoligomeric VO x catalyst species lead to high selectivity towards formaldehyde during methane oxidation [5][6][7]. Mesoporous silicas, like MCM-41 or SBA-15, were identified as preferred supports to provide the most suitable surfaces for such species [3,[8][9][10]. In our previous study we found SBA-15 most suitable when VO x is attached via incipient wetness impregnation on the inner silica surface [ 9].…”

“…Bulánek et al have shown that the synthesis procedure has no influence on the type of vanadia (VO x ) species but on their population [11]. Further correlation of structure and preparation method [9,11], are under debate, however a "precursor memory effect" is hard to exclude on a time-scale typically employed in lab-scale catalytic tests (<8 h). Less frequently described is the strategy to correlate morphology of specific supports i.e.…”