Iron Modified MCM-41 Materials Characterised by Methanol Oxidation and Sulphurisation Reactions

Abstract

SiMCM-41, AlMCM-41, NbMCM-41 were applied as supports for iron species introduced by wetness impregnation and chemical vapour deposition (CVD) methods. Methanol oxidation and sulphurisation were used for the characterisation of catalytic properties. The support nature as well as the type of iron species have no effect on the selectivity of methanol oxidation. However, they bear a significant influence on both the activity and selectivity in the reaction between methanol and hydrogen sulphide. The wetness impregnation of NbMCM-41 and AlMCM-41 with Fe salt leads to the most effective catalysts in the sulphurisation of methanol.

Preparation of two series of VxSiBeta zeolite catalysts with V centres in framework and extra-framework positions and their application in selective oxidation of methanol

“…As it was mentioned earlier [56][57][58][59][60][61][62][63][64][65][66], methanol oxidation is a convenient test reaction to identify the active sites of a broad range of catalysts. The possible methanol transformation routs during its oxidation process is presented in Fig.…”

Zeolite and Metal Oxide Catalysts for the Production of Dimethyl Sulfide and Methanethiol

“…We can also refer to two previous studies correlating sulfidation activity and acid site distribution [21,22]. The first of these assumed that Lewis acid/base pairs were responsible for activity, estimated the strength of such pairs from the composition, and concluded that stronger acidity was required for DMS (vs. MT) production.…”

Green Synthesis of Benzylated Aromatics Using Iron Loaded Mesoporous Materials

“…Introduction of iron into the mesoporous material by wet impregnation technique showed high redox property than tetrahedrally coordinated Fe 3+ located in the skeleton of the materials 16 which would be highly beneficial for the title reaction as it follows redox mechanism as confirmed by earlier report 14 . Iron loaded Al-MCM-41 catalyst prepared by wet impregnation was found to be the most effective catalyst in the sulfurisation of methanol involving redox mechanism than iron impregnated purely siliceous MCM-41 17 .…”