20.500.12556/RUL-139829 Stabilnost hidroksimetilfurfurala v vodi in različnih organskih topilih ter njegova pretvorba do levulinske kisline Stability of hydroxymethylfurfural in water and various organic solvents and its conversion towards levulinic acid Vedno več je povpraševanja po HMF-ju, saj je to ena izmed spojin, ki predstavlja velik pomen pri iskanju alternativnih virov energije. HMF je možno pretvoriti v nekaj zelo pomembnih kemikalij visokih vrednosti. Ena izmed teh je tudi levulinska kislina, ki se uporablja v različne namene, vendar je pretvorba HMF-ja do kisline zelo nizko donosna, proizvodni stroški pa so ogromni. Cilj je bil raziskati stabilnost HMF-ja v različnih topilih, relevantnih predvsem za njegovo sintezo in čimbolj optimalno nadaljnjo pretvorbo, saj bi tako zmanjšali število organskih odpadkov v laboratorijih oziroma industrijskih proizvodnjah in s tem omogočili boljši celokupni izkoristek stranskih produktov. Prišel sem do ugotovitve, da je HMF-najbolj stabilen v vodi in ima najbolj učinkovito pretvorbo z katalizatorjem H-beta zeolitom. There is a growing demand for HMF, as it is one of the compounds that is of great importance in the search for alternative energy sources. HMF can be converted into some very important high value chemicals, one of which is levulinic acid, which is used for a variety of purposes, but the conversion of HMF to acid is very low yielding and the production costs are enormous. The aim was to investigate the stability of HMF in different solvents, mainly relevant for its synthesis and to optimise its further conversion, as this would reduce the organic waste in laboratories or industrial production and thus allow a better overall recovery of the by-products. I came to the conclusion that HMF is most stable in water and has the most efficient conversion with the catalyst H-beta zeolite. 5-hidroksimetilfurfural levulinska kislina katalizator 5-hydroxymethylfurfural levulinic acid catalysis true false false Slovenski jezik Angleški jezik Diplomsko delo/naloga 2022-09-07 15:30:27 2022-09-07 15:30:33 2022-10-26 12:20:19 0000-00-00 00:00:00 2022 0 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 21932 127203331 Hozjan_Matej_-_Stabilnost_hidroksimetilfurfurala_v_vodi_in_razlicnih_organskih_topilih_ter_njego.pdf Hozjan_Matej_-_Stabilnost_hidroksimetilfurfurala_v_vodi_in_razlicnih_organskih_topilih_ter_njego.pdf 1 46BFE42316358B504C1905F2731F75F3 adcdad1e59bfdaa3b615471c8700fd7c399b425e88a715668964e1bf6a26a1ce 32a670b3-2eb1-11ed-92af-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=160460 Fakulteta za kemijo in kemijsko tehnologijo 0 0 0