Oksidacija modelnih komponent lignina in razvoj kinetičnih modelov

magistrsko delo

Martin Ciringer (Author), Blaž Likozar (Mentor), Urška Šebenik (Thesis defence commission member), Rok Ambrožič (Thesis defence commission member)

Abstract

Lignin je najbolj razširjen vir aromatov na Zemlji. Zaradi njegove kompleksnosti se tako znanost kot industrija že desetletja trudita odkriti način, kako ga funkcionalizirati in pretvoriti v bazne kemikalije ali produkte z dodano vrednostjo. Z željo raziskati kemijo lignina, so v magistrski nalogi preučevane različne ligninske modelne komponente; vanilin, acetovanilon, katehol in resorcinol. Vzpostavljeni so bili kinetični modeli, ki popišejo odvisnost od pH vrednosti in temperature in tako dobro opišejo oksidacijo modelnih komponent v bazičnem pod milimi pogoji. Ugotovljeno je bilo, da poteka oksidacija protoniranih in deprotoniranih zvrsti različno hitro. Primerjava reaktivnosti modelnih komponent pa lahko služi kot odskočna deska za nadaljnje eksperimente funkcionalizacije lignina.

Keywords

lignocelulozna biomasa;ligninske modelne komponente;kinetično modeliranje;kinetični modeli;oksidacija v bazičnem;oksidacija s kisikom;magistrska dela;

Data

Language:	Slovenian
Year of publishing:	2025
Typology:	2.09 - Master's Thesis
Organization:	UL FKKT - Faculty of Chemistry and Chemical Technology
Publisher:	[M. Ciringer]
UDC:	665.947.4.094.3(043.2)
COBISS:	229026563
Views:	126
Downloads:	35
Average score:	0 (0 votes)
Metadata:

Other data

Secondary language:	English
Secondary title:	Oxidation of Lignin Model Compounds and Development of Kinetic Models
Secondary abstract:	Lignin is the most abundant source of aromatics on Earth. Due to its complex structure, science and industry have been striving for decades to discover ways to convert it into basic chemicals or to value-added products by its modification and functionalisation. To explore the chemistry of lignin, various model compounds – vanillin, acetovanillone, catechol and resorcinol – were studied in this master's thesis. Kinetic models were established to describe the dependence on pH and temperature, effectively characterizing the oxidation of the model compounds under basic mild conditions. It was found that the oxidation rates of protonated and deprotonated species differ significantly. The comparison of the reactivity of these model compounds can serve as a springboard for further experiments in lignin functionalisation.
Secondary keywords:	lignin model compounds;kinetics modelling;oxidation in alkali;lignin;oxygen oxidation;Lignin;Oksidacija;Kemijska kinetika;Univerzitetna in visokošolska dela;
Type (COBISS):	Master's thesis/paper
Study programme:	1000376
Embargo end date (OpenAIRE):	1970-01-01
Thesis comment:	Univ. v Ljubljani, Fak. za kemijo in kemijsko tehnologijo, smer Kemijsko inženirstvo
Pages:	1 spletni vir (1 datoteka PDF (58 str.))
ID:	26026499