Oxidation of methanol to formaldehyde on cation vacant Fe–V–Mo-oxide

From Yellow to Black: Dramatic Changes between Cerium(IV) and Plutonium(IV) Molybdates

“…[65][66][67][68][69][70][71][72][73] However, the energy at the 1/2-height of the edge is better, and indicates something close to Mo(VI), since Mo(IV) ½-height energies are typically below 20011 eV when using our chosen energy calibration. 63,64 With such uncertainty, it is not really possible to determine how much Mo(V) is mixed in; we therefore report here that the Mo K-edge XANES are consistent with a Mo(V,VI) state.…”

Alkali Earth Metal Molybdates as Catalysts for the Selective Oxidation of Methanol to Formaldehyde—Selectivity, Activity, and Stability

“…Thus, it is of major interest to either increase the stability of the iron molybdate or find alternative catalysts with similar activity and selectivity, but better stability and less volatile components. In the literature, much investigation has gone into various vanadium-based systems such as vanadium phosphates (90%-96% selectivity) [17,18], iron vanadates (90% selectivity) [3,[19][20][21][22][23][24][25][26], supported V 2 O 5 [27][28][29][30][31][32], and other vanadium-based catalysts [33,34]. The vanadium-based catalysts mostly show good activity, lower selectivity than iron molybdate, and the vanadium is also subject to volatilization [22,35].…”

“…The vanadium-based catalysts mostly show good activity, lower selectivity than iron molybdate, and the vanadium is also subject to volatilization [22,35]. On the other hand only few publications looking into alternative molybdate catalysts are found in the literature [3,[36][37][38], and have mostly been done by Popov et al [36][37][38] during the 1970s and 1980s and, more recently, by the Andersson group at Lund University (Sweden) [3,20]. Unfortunately, details on the stability of the systems are often not provided, even though this is the main motivation for finding an alternative catalyst system for the industry.…”

Mesoporous WO3 photocatalyst for the partial oxidation of methane to methanol using electron scavengers

“…For instance, the methane conversion into methanol is a good alternative to obtain a liquid compound that can be used as starting material to synthesize a variety of chemicals such as formaldehyde, acetic acid, methyl tbutyl ether, etc. Also, methanol is considered a much more efficient fuel than petroleum-based ones [2,3].…”