Molybdenum oxide-based systems, prepared starting from Anderson-type polyoxometalates precursors, as catalysts for the oxidation of i-C4 hydrocarbons

Selective Oxidation of Isobutane and Isobutene to Methacrolein over Te–Mo Mixed Oxide Catalysts

“…In order to compare the distribution of the crystalline phases in calcined samples, the TeMo 5 It is obvious that the bands at 989, 876, 820, 615, and 514 cm -1 are characteristic of MoO 3 . However, all of these bands can be shifted from their original positions due to incorporation of Te atoms to the system [8].…”

“…Very recently, Mo-V-Te-based mixed oxides possessing multi-functional properties have been reported as potential candidates for the activation of isobutane [1][2][3][4][5][6]. It has been proposed that Te 4+ is the important ion to form M1 (TeM 3 O 10 , M = Mo, V and Nb) and M2 (Te 2 M 20 O 57 ) phases [7][8][9][10][11].…”

“…However, there have been only few reports on Te-Mo-O mixed oxides catalysts for the selective oxidation of isobutane and isobutene up to now. As far as we are aware, there are few previous literatures concerning the selective oxidation of isobutene [6,15]. Therefore, investigating catalytic oxidation of isobutane and isobutene over Te-Mo-O system catalysts has great academic interests as well as commercial interests.…”

Recent Advances of Anderson-Type Polyoxometalates as Catalysts Largely for Oxidative Transformations of Organic Molecules

“…The applications in organic reaction are still the confronting great challenge. With the structural development of Anderson-type POMs, a mounting number of researchers began to study the modification of POMs which controlled the application in the catalytic field [14][15][16][17][18][19]. These studies illustrate that Anderson-type POMs not only possess acid-based properties, but also excellent redox performance for the contributor that is present in central atoms.…”