Performance of birnessite-type manganese oxide in the thermal-catalytic degradation of polyamide 6

Reaction of formaldehyde over birnessite catalyst: A combined XPS and ToF-SIMS study

“…Manganese based material was prepared at room temperature by oxidation of Mn(NO3)2 with H2O2 in KOH solution [30]. An aqueous basic solution of H2O2 was first prepared as follows: 200 mL of KOH (0.6 mol.L -1 ) was mixed with 200 mL of 3% H2O2.…”

“…The second synthetic route uses the reduction of Mn (VII) with several reducing agents such as Mn (II) [24], H2O [25][26], sugars [27], organic acids [28] or organic solvents [29]. An original route for birnessite preparation has been proposed by Eren et al [30] based on the oxidation of Mn(NO3)2 with H2O2 in KOH solution.…”