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Title:Optimizacija poroznih materialov za zajemanje CO2 : Diplomsko delo
Authors:Valentić, Lara (Author)
Zabukovec Logar, Nataša (Mentor) More about this mentor... New window
Files:.pdf Lara_Valentic.pdf (3,63 MB)
 
Language:Slovenian
Work type:Bachelor thesis/paper (mb11)
Tipology:2.11 - Undergraduate Thesis
Organization:FZO - Faculty of Environmental Sciences
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
Year of publishing:2015
Source:Nova Gorica
COBISS_ID:3998459 Link is opened in a new window
URN:URN:SI:UNG:REP:Q4KWWREH
Views:3034
Downloads:178
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Secondary language

Language:English
Title:Optimization of porous materials for CO2 capture : Diploma thesis
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.
Keywords:Metal-organic framework materials, CO2 capture, structure characterization, aliphatic carboxylates, aromatic carboxylates


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