20.500.12556/DKUM-79765 Sinteza kovinskih katalizatorjev z metodo mokre impregnacije diplomsko delo univerzitetnega študijskega programa I. stopnje Synthesis of metal catalyst with wet impregnation method Namen diplomskega dela je bil sintetizirati kovinske kislinske katalizatorje z metodo mokre impregnacije aktivnih soli AlCl3, Al(NO3)3 in Al-izopropoksida na nosilec γ–Al2O3. Za karakterizacijo sintetiziranih katalizatorjev smo uporabili različne metode, kot so FTIR (Fourier-transform infrared spectroscopy), BET (Brunauer-Emmett-Teller surface area analysis), DSC (differential scanning calorimetry), TGA (thermogravimetric analysis) in NH3 fizisorpcija. Aktivnost sintetiziranih katalizatorjev smo preizkusili na reakciji esterifikacije miristinske kisline z metanolom. Vzorce smo analizirali s HPLC povezanim z UV-VIS detektorjem. Iz umeritvene krivulje standardnih raztopin miristinske kisline in metil miristata smo določili koncentracije in nadalje presnovo miristinske kisline. Izkazalo se je, da so katalizatorji, ki imajo impregnirano aktivno sol v večjih masnih deležih, bolj učinkoviti pri reakciji esterifikacije, kot pa katalizatorji z manjšim masnim deležem soli. Dobljene eksperimentalne podatke smo opisali z Langmuir-Hinshelwood-Hougen-Watson-ovim modelom. Določili smo konstante proizvodnosti pri različnih temperaturah (50, 55, 60 in 64,5) °C in različnih masah dodanega katalizatorja (0,2, 0,15, 0,1 in 0,05) g. The purpose of this bachelor’s thesis was to synthesize metal acid catalysts with the method of wet impregnation of the active salt AlCl3, Al(NO3)3 and Al-isopropoxide on γ – Al2O3 support. Various methods such as FTIR (Fourier-transform infrared spectroscopy), BET (Brunauer-Emmett-Teller surface area analysis), DSC (differential scanning calorimetry), TGA (thermogravimetric analysis) and NH3 physisorption were used to characterize the synthesized catalysts. The activity of the synthesized catalysts was tested on the esterification reaction of myristic acid with methanol. Samples were analyzed by HPLC, coupled with a UV-VIS detector. From the calibration curve of standard solutions of myristic acid and methyl myristate, the concentrations and conversion rates of myristic acid were determined. Catalysts having an impregnated active salt in higher mass fractions have been shown to be more effective in the esterification reaction than catalysts with a lower mass fraction. The obtained experimental data were described by the Langmuir-Hinshelwood-Hougen-Watson model. Productivity constants were determined at different temperatures (50, 55, 60 and 64.5) ° C and different masses of added catalyst (0.2, 0.15, 0.1 and 0.05) g. esterifikacija mokra impregnacija katalizator miristinska kislina esterification wet impregnation catalyst myristic acid true true false [A. Oštir] Slovenski jezik Angleški jezik Diplomsko delo/naloga 2021-08-16 22:31:43 2021-08-31 15:25:12 2022-08-09 22:01:17 0000-00-00 00:00:00 2021 0 Maribor 0 Maribor XII, 42 str. 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 667.648.2(043.2) 74788611 UN_Ostir_Andraz_2021.pdf UN_Ostir_Andraz_2021.pdf 1 6BFEF9A965C465BEC314DC0777F44687 4229a286ae24a72ec14b8b28bc2c5098e29bbb05594a2374b8afeb25e1c778e3 16b9bdd3-058c-11ec-b44e-00155d581298 20.500.12556/dkum/473ecb18-ea2b-4647-961b-26017476bb92 https://dk.um.si/Dokument.php?lang=slv&id=152293 Fakulteta za kemijo in kemijsko tehnologijo 0 0 0