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Aleksandra Pietraszek

Student

Jagiellonian University

Poland

Biography

I started my doctoral studies at Faculty of Chemistry of Jagiellonian University in 2021. I carry out my research work in Environmental Technology Research Group under scientific supervision of prof. Lucjan Chmielarz. My research work is focused on the synthesis of high surface porous materials of MCM-41 and MCM-48 types and their functionalization with transition metals to obtain effective catalysts for important environmental processes, such as Selective Catalytic Reduction of nitrogen oxides, NOx, with ammonia (NH3-SCR) and Selective Catalytic Oxidation of ammonia (NH3-SCO). The starting point in my research is deposition of selected transition metals mesoporous silicas of the MCM-41 and MCM-48 types by template ion-exchange (TIE) method. The high dispersion of deposited metal species can be controlled by treatment of the samples directly after TIE procedure with ammonia solution (e.g., in the case of copper species deposition). This modified version of TIE method was developed in Environmental Technology Research Group. Unfortunately, the side effect of ammonia treatment is a partial destruction of the ordered porous structure of mesoporous silicas. One of the main goals of my studies is development of alternative to ammonia complexing agents with a similar efficiency in protection of highly deposited transition metals species, but less reactive in degradation of porous structure of mesoporous silica materials. At the second year of doctoral studies, I completed a five-weeks research internship at University of Antwerp (Belgium) in the research group headed by prof. Pegie Cool. During the internship I got acquainted with ADP method and obtained catalysts based on MCM-41 and MCM-48. Part of the studies were carried out in the frame of project 2018/31/B/ST5/00143 from the National Science Centre (Poland). Part of the research has been supported by a grant from the Faculty of Chemistry under the Strategic Programme Excellence Initiative at Jagiellonian University.
 

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