20.500.12556/RUL-167073 Uporaba dicianamidnih anionov za spreminjanje selektivnosti paladijeve elektrode pri elektrokemijski redukciji furfurala Use of dicyanamide anions to modify the selectivity of the palladium electrode in the electrochemical reduction of furfural Furfural je biomaterial, ki se pridobiva s predelavo biomasnih ostankov kmetijske industrije. Danes ta molekula pridobiva na pomenu zaradi prizadevanj za zamenjavo fosilnih goriv z obnovljivimi viri energije, saj lahko z redukcijo služi kot vir za biogoriva in različne intermediate v kemijski industriji. Pri elektrokemijski redukciji furfurala so glavni produkti furfuril alkohol, 2-metilfuran in hidrofuroin, ki v kislem mediju nastaja v zanemarljivih količinah. Poleg elektrokemijske redukcije furfurala je glavna stranska reakcija proizvodnja vodika iz vode, kar je moteč proces, ki ga je potrebno minimizirati. V ta namen sem elektrodo modificiral z metilpropilimidazolijevim dicianamidom, ki v heterogeni katalizi kaže povečano selektivnost v smeri redukcije organskih substratov. Z uporabo HPLC sem analiziral količine nastalega furfuril alkohola pred in po uporabi dicianamidnih anionov ter pokazal, kako se gostota električnega toka spremeni z modifikacijo elektrode. Prav tako sem preveril kako se sloj dicianamidov zadržuje na elektrodi. Furfural is a biomaterial produced by processing biomass residues from the agricultural industry. Nowadays, this molecule is increasingly used due to the trend to replace fossil fuels with renewable energy sources. Through reduction, it can serve as a source of biofuels and various intermediates in the chemical industry. In the electrochemical reduction of furfural, the main products are furfuryl alcohol, 2-methylfuran and hydrofuroin, which is formed in negligible amounts in acidic media. Apart from the electrochemical reduction of furfural, the most important side reaction is the generation of hydrogen from water, an undesirable process that must be minimized. To this end, I modified the electrode with methylpropylimidazolium dicyanamide, which exhibits increased selectivity in the reduction of organic substrates in heterogeneous catalysis. Using HPLC, I analyzed the amounts of furfuryl alcohol formed before and after the application of the dicyanamide anions and how the electrical current density changes with the modification of the electrode. I also checked how the dicyanamide layer on the electrode is retained. Furfural elektroredukcija paladij dicianamidni anioni Furfural electroreduction palladium dicyanamide anions true false false Slovenski jezik Angleški jezik Diplomsko delo/naloga 2025-02-06 12:45:02 2025-02-06 12:45:11 2025-02-07 10:34:00 0000-00-00 00:00:00 2025 0 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 24164 225441027 Markezic_Martin_-_Uporaba_dicianamidnih_anionov_za_spreminjanje_selektivnosti_paladijeve_elektro.pdf Markezic_Martin_-_Uporaba_dicianamidnih_anionov_za_spreminjanje_selektivnosti_paladijeve_elektro.pdf 1 739CE7C4092D398C544DBEB8CA475638 fd990d8daddc845d2b131814bd5fcb0a92907951713a0a4ed91d047da72d6489 f9747f14-e47e-11ef-b232-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=199221 Fakulteta za kemijo in kemijsko tehnologijo 0 0 0