Projects / Programmes
NANOPOROUS IRON FUNCTIONALIZED SILICATES
| Code |
Science |
Field |
Subfield |
| 1.04.03 |
Natural sciences and mathematics |
Chemistry |
Inorganic chemistry |
| Code |
Science |
Field |
| P360 |
Natural sciences and mathematics |
Inorganic chemistry |
nanoporous iron silicates, microporous molecular sieves, mesoporous molecular sieves, microwave synthesis, zeolite nanocrystals, structural characterization
Researchers (1)
| no. |
Code |
Name and surname |
Research area |
Role |
Period |
No. of publicationsNo. of publications |
| 1. |
15790 |
PhD Alenka Ristić |
Chemistry |
Head |
2007 - 2009 |
270 |
Organisations (1)
| no. |
Code |
Research organisation |
City |
Registration number |
No. of publicationsNo. of publications |
| 1. |
0104 |
National Institute of Chemistry |
Ljubljana |
5051592000 |
21,023 |
Abstract
The main goal of the proposed project is the synthesis and characterization of iron functionalized nanoporous silicates. These materials have a significant potential for applications in catalysis. Synthesis conditions will be optimized to achieve the desired nanostructures, which will be characterized by different methods (XRD, EDX, TGA, SEM, DLS, TEM) and spectroscopic techniques, such as NMR and XAS. Nuclear methods are also to be used - positronium life-time for porosity studies and in situ Mössbauer spectroscopy to analyze the redox properties of the products. The changes in the properties of the materials caused by the reduction of particle size from micrometer to the nanometer scale will be examined.
Significance for science
The development of nanoporous silicates with large specific surface areas is currently a field of extensive research, particularly with regard to potential applications in areas such as adsorption, catalysis, sensor technology, and gas storage. For instance, zeolites are the most widely used catalysts in industry (oil refining, petrochemistry, and organic synthesis in production of fine and specialty chemicals).
The development of synthesis and preparation of new catalitically active materials will enable more precisely-directed synthetic routes for the preparation of pure phases of materials with specific and targeted physical and chemical properties. Simultaneous development of characterisation methods for the determination of framework structures and the nature and distribution of framework or extra-framework active sites will help in understanding of the processes and mechanisms of some other new materials with more complex structures.
Significance for the country
Environmental and economic considerations have raised strong interest to redesign commercially important processes so that the use of harmful substances and the generation of toxic waste could be avoided. In this respect, there is no doubt that new nanoporous catalysts can play a key role in the development of environmentally benign processes in petroleum chemistry and in the production of chemicals, for instance by substitution of liquid acid catalysts by solid materials. Especially microporous iron functionalized silicates have attracted strong attention as such acids, but also as redox catalysts.
Several potencial applications are based on the preparation of thin films (100-200 nm) from nanozeolites; e.g. as an intelligent design of the surface of electrodes in electrochemistry, low-k dielectric materials in electronics, as optical antennas in optics, and in medical diagnostics by the introduction of contrast and luminescent agents into zeolite nanocrystals for magnetic resonance imaging.
In the described project we propose investigations that would allow Slovenian science to participate in the frontiers of the research on preparation of zeolitic materials. Zeolitic materials are not only interesting from the fundamental-science point of view, but are also promising materials for nanotechnology and might enable even to start up some 'high-tech' enterprises in the future.
We will contribute also new knowledge of preparation and characterization of inorganic materials that are used as catalysts in the production processes and in environmental chemistry with the possibility of their practical application and as hydrogen storage and heat storage materials.
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