Nanomaterials obtained by ruthenium immobilization on mesoporous

Introduction. Since the discovery of the MCM-41 and FSM-16 in the early 1990`s of the last century, great and fascinating progress has been made in the design, preparation, characterisation and application of mesoporous silica... [ view full abstract ]

Introduction. Since the discovery of the MCM-41 and FSM-16 in the early 1990`s of the last century, great and fascinating progress has been made in the design, preparation, characterisation and application of mesoporous silica materials.
Methods. The mesoporous MCM-41 is successfully used as the support to immobilize transition metals like ruthenium by direct synthesis. UV-VIS spectroscopy and N2 adsorption are applied to characterizing these supported catalysts.
Results and discussion. The synthesized material has high specific surface area, narrow pore size distribution, and large pore with high wall thickness which is very suitable for using as support material. Ruthenium can be dispersed effectively on MCM-41 by direct synthesis method and still keep the original 2D hexagonal mesostructure. The results of heterogeneous liquid oxidation (alcohols oxidation) reveal that these supported catalysts have high catalytic activity.

Acknowledgments: this research was financed by The Executive Agency for Higher Education Research Development and Innovation Funding (UEFISCDI), Romania, on the Contract no. 210/2014, Project PN-II-PT-PCCA-2013-4-2075 and 34N/2016 NUCLEU Program, under Project PN 16 36 04 03 „Research on the development of new porous materials with high selective and catalytic properties for the reduction and stabilization of the pollutant concentrations in gaseous and liquid backgrounds”.