diplomsko delo
Lara Valentić (Author), Nataša Zabukovec Logar (Mentor)

Abstract

V diplomskem delu sem želela raziskati razlike v sposobnostih za vezavo ogljikovega dioksida v kovinsko-organskih poroznih (MOF) materialih, sintetiziranih z okoljsko manj obremenjujočimi reaktanti, kot so trenutno v uporabi, in oceniti primernost materialov za zajem ogljikovega dioksida iz dimnih plinov v že obstoječih tehnoloških procesih. Pri sintezah sem spreminjala vir Mg in Al ionov, vrsto organskih ligandov in topil, temperaturo in čas sinteze. Večina produktov je bila narejena s solvotermalno sintezo, dva produkta sem poskusila optimizirati z mikrovalovno sintezo. Sintetiziranim produktom sem določala strukturo in/ali poroznost z uporabo rentgenske difrakcije (XRD), elektronske mikroskopije z uporabo elementne analize (SEM in EDX) ter s fizisorpcijo dušika. Najprimernejše produkte sem nato testirala za zajem ogljikovega dioksida. Najboljši produkt za zajemanje ogljikovega dioksida je Al-BPDC, aromatski kovinsko-organski porozni material z BET-specifično površino 1712 m2/g. Alifatski produkti z aluminijem in magnezijem (sukcionat, glutarat in pimelat) imajo opazno stopnjo adsorpcije šele pri visokih tlakih, zato niso primerni za adsorpcijo in zajem ogljikovega dioksida iz dimnih plinov.

Keywords

kovinsko-organski porozni materiali;zajem CO2;strukturna karakterizacija;alifatski karboksilati;aromatski karboksilati;diplomske naloge;

Data

Language: Slovenian
Year of publishing:
Typology: 2.11 - Undergraduate Thesis
Organization: UNG FZO - Faculty of Environmental Sciences
Publisher: [L. Valentić]
UDC: 54
COBISS: 3998459 Link will open in a new window
Views: 5397
Downloads: 259
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Other data

Secondary language: English
Secondary title: Optimization of porous materials for CO2 capture
Secondary abstract: In my diploma thesis, I wanted to study differences in capacity for carbon dioxide capture in metal-organic framework (MOF) materials, synthesized with environmentally more acceptable reagents that currently used ones. Furthermore, I did evaluation of synthesized products for carbon capture from gas mixtures in already existing technological processes. In the synthesis of products, I have changed the source of Al and Mg ions, type of organic ligands and solvents, temperature and time of synthesis. Majority of the products were synthesised with solvothermal synthesis, but I have also tried to optimize two products with microwave synthesis. All products were further analysed with X-Ray diffraction (XRD), electron microscopy (SEM), elemental analysis (EDX) and nitrogen physisorption to determine structure and/or porosity. Most appropriate products were chosen for testing the carbon dioxide adsorption. The best synthesised product for carbon capture is Al-BPDC, aromatic MOF-material with BET specific surface 1712 m2/g. Aluminium and magnesium aliphatic products with succinic, glutaric and pimelic acid have noticeable adsorption rates at high pressures, therefore they are not appropriate for carbon capture from flue gases.
Secondary keywords: Metal-organic framework materials;CO2 capture;structure characterization;aliphatic carboxylates;aromatic carboxylates;
URN: URN:SI:UNG
Type (COBISS): Bachelor thesis/paper
Thesis comment: Univ. v Novi Gorici, Fak. za znanosti o okolju
Pages: IX, 52 str.
ID: 9063292