diplomsko delo
Povzetek
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.
Ključne besede
kovinsko-organski porozni materiali;zajem CO2;strukturna karakterizacija;alifatski karboksilati;aromatski karboksilati;diplomske naloge;
Podatki
Jezik: |
Slovenski jezik |
Leto izida: |
2015 |
Tipologija: |
2.11 - Diplomsko delo |
Organizacija: |
UNG FZO - Fakulteta za znanosti o okolju |
Založnik: |
[L. Valentić] |
UDK: |
54 |
COBISS: |
3998459
|
Št. ogledov: |
5397 |
Št. prenosov: |
259 |
Ocena: |
0 (0 glasov) |
Metapodatki: |
|
Ostali podatki
Sekundarni jezik: |
Angleški jezik |
Sekundarni naslov: |
Optimization of porous materials for CO2 capture |
Sekundarni povzetek: |
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. |
Sekundarne ključne besede: |
Metal-organic framework materials;CO2 capture;structure characterization;aliphatic carboxylates;aromatic carboxylates; |
URN: |
URN:SI:UNG |
Vrsta dela (COBISS): |
Diplomsko delo/naloga |
Komentar na gradivo: |
Univ. v Novi Gorici, Fak. za znanosti o okolju |
Strani: |
IX, 52 str. |
ID: |
9063292 |