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Določitev temperaturne odvisnosti topnosti in kristalizacije furfurala, hidroksimetilfurfurala in levulinske kisline v vodi ter polarnih in nepolarnih topilih v realnem času = Solubility and crystallization temperature dependence determination of furfural, hydroxymethylfurfural and levulinic acid in water, nonpolar and polar solventsJakob, AnaFurfural (FF), levulinska kislina (LA) in hidroksimetilfurfural (HMF), predstavljajo ključne intermediate različnih kemijskih spojin, pomembnih za razvoj zelenega gospodarstva kot tudi zdravilnih ... učinkovin v farmacevtski industriji. Pridobljene so iz sladkorjev biomase kot so celuloza, glukoza, heksoza, v primeru HMF/LA in hemiceluloze, ksiloze in pentoze v primeru FF. Način pridobivanja je tako pogosto hidroloza sladkorjev, v nadaljevanju pa tudi hidrogenacija in oksidacija. Kljub pomembnosti molekul sta njihova detekcija s procesno-analiznimi tehnologijami in temperaturna odvisnost topnosti slabo raziskani. Zato bomo v nalogi poročali o topnosti posameznih spojin (FF, HMF, LA) v izbranih topilih pri različnih temperaturah : n-heksan, cikloheksan, benzen, toluen, 1,4-dioksan, dietileter, diklorometan, tetrahidrofuran, etilacetat, aceton, dimetilformamid, acetonitril, dimetilsulfoksid, mravljična kislina, n-butanol, n- propanol, etanol, metanol in voda. Pridobljeni podatki so izjemnega pomena za sintezo, čiščenje in kasnejše kemijske reakcije molekul. Uporabljena PAT (Process Analytical Technology) metoda, ATR-FTIR (Attenuated Total Reflectance Fourier-Transform Infrared Spectroscopy) nam omogoča izračun termodinamičnih podatkov topnosti, ki nam kasneje v pomagajo pri načrtovanju kristalizacije kot procesa čiščenja in izolacije molekul levulinske kisline in hidroksimetilfurfurala. Pri nadzorovanju procesa nam je v pomoč FBRM (Focused Beam Reflectance Measurement) metoda, s katero lahko določimo ključne podatke, kot porazdelitev in velikost delcev ter začetno oz. >>onset<< temperaturo kristalizacije.Type of material - master's thesis ; adult, seriousPublication and manufacture - Ljubljana : [A. Jakob], 2020Language - slovenianCOBISS.SI-ID - 30561539
Author
Jakob, Ana
Other authors
Srčič, Stanko |
Likozar, Blaž
Topics
Topnost |
Farmacevtska industrija |
levulinska kislina |
hidroksimetilfurfural |
furfural |
ATR-FTIR |
proces topnosti |
kristalizacija
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Library/institution |
City | Acronym | For loan | Other holdings |
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Faculty of Pharmacy, Ljubljana | Ljubljana | FFALJ |
reading room 1 cop.
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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Database name | Field | Year |
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Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
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Jakob, Ana | 54673 |
Srčič, Stanko | 09031 |
Likozar, Blaž | 25446 |
Source: Personal bibliographies
and: SICRIS
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