Synthesis of V-containing Keggin polyoxometalates: Versatile catalysts for the synthesis of fine chemicals?

Hydroxylation of Benzene to Phenol by Molecular Oxygen over an Organic–Inorganic Hybrid Catalyst: Schiff Base Manganese Complex Attached to Molybdovanadophosphoric Heteropolyacid

“…In particular, Keggin-structured heteropolyacids have been widely used as catalysts in oxidation reactions due to their tailorable redox properties [15]. Various organic units such as aliphatic amines [16], metalloporphyrins [17], and bipyrimidinylplatinum [18] were doped into Keggin heteropolyacids to modify their catalytic performances in oxidation reactions.…”

Direct synthesis of phenol from benzene catalyzed by multi-V-POMs complex

“…3). The complex cation [Mo 2 V 2 O 9 (bpy) 6 ] 4+ exhibited an tetranuclear Z-shaped organic-inorganic hybrid structure (Fig. S2).…”

“…X-ray single crystal diffraction elucidated the precise structure of 1, which consisted of Mo/V/O-based cation [Mo 2 V 2 O 9 (bpy) 6 (Fig. 3).…”

“…A lot of efforts have been made to develop new techniques to solve these drawbacks, direct synthesis of phenol from benzene is preferred. With regard to the low phenol yields and low selectivities to phenol (due to the fact that benzene is hard to be oxidized and phenol is easily suffered from over oxidation) [3], a series of well performed catalysts for hydroxylation of benzene have been designed and synthesized [4][5][6][7][8][9][10][11][12][13][14][15][16][17].…”

Enhanced catalytic activity over vanadium-containing silylated SBA-15 catalysts for styrene epoxidation and benzene hydroxylation

“…However, the interaction between H 2 O 2 and the catalyst is expected to be weaker over the silylated samples than the non-silylated one due to the hydrophilic nature of H 2 O 2 . It was reported that the mechanism for benzene hydroxylation on vanadium-containing catalysts involved the peroxovanadate species generated by H 2 O 2 decomposition [33][34][35]. Also, it is worth noting that the balance between the adsorption of benzene and the decomposition rate of H 2 O 2 is important for a good catalyst in the benzene hydroxylation reaction.…”