diplomsko delo
Janja Slovša (Author), Blaž Likozar (Mentor)

Abstract

V diplomskem delu sem preučevala indukcijsko katalizo pri reakciji epoksidacije etilena s kisikom za nastanek etilen oksida. Pri tem sem uporabila katalizator s srebrom in bakrom na predhodno pripravljeni osnovni podlagi s hidrotermalno sintetiziranimi magnetnimi nanodelci železovega oksida oblečenimi v alumino v obliki Al2O3. S tem delom sem želela ugotoviti kakšni so optimalni pogoji za proizvodnjo etilen oksida ter oceniti učinkovitost in delovanje katalizatorja. Z eksperimentalnimi rezultati sem ugotovila, da omenjeni katalizator v reaktorju za indukcijsko katalizo najbolje deluje pri temperaturi 100 °C in tlaku 20 barov. Kljub temu, da sem z izvedeno reakcijo pridobila nekaj željenega produkta etilen oksida, je konverzija še vedno prenizka za dejanski prenos takšne proizvodnje etilen oksida na industrijsko skalo. Z opravljenimi analitskimi tehnikami sem ugotovila, da so železovi nanodelci v katalizatorju izpostavljeni reakcijski atmosferi. Tako sklepam, da je slaba pokritost omenjenih delcev glavni razlog za slabšo konverzijo in selektivnost nastanka etilen oksida. Za boljše delovanje katalizatorja bi bilo potrebno le-tega še dodatno optimizirati, s čimer bi lahko dosegli boljše rezultate.

Keywords

etilen oksid;epoksidacija;indukcija;katalizatorji;sinteza katalizatorja;diplomska dela;

Data

Language: Slovenian
Year of publishing:
Typology: 2.11 - Undergraduate Thesis
Organization: UL FKKT - Faculty of Chemistry and Chemical Technology
Publisher: [J. Slovša]
UDC: 66.097:547.422.22-31(043.2)
COBISS: 168047619 Link will open in a new window
Views: 30
Downloads: 3
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Other data

Secondary language: English
Secondary title: Electrification in the catalytic epoxidation process
Secondary abstract: In this work, I studied the induction catalysis of the epoxidation reaction of ethylene with oxygen to form ethylene oxide. I used a silver-copper catalyst on a pre-prepared base substrate with hydrothermally synthesised magnetic iron oxide nanoparticles coated in alumina in the form of Al2O3. With this work I aimed to determine the optimum conditions for ethylene oxide production and to evaluate the efficiency and performance of the catalyst. By experimental results, I found that the catalysis reactor works optimally at the temperature of 100 °C and pressure of 20 bars. Although the reaction carried out gave some of the desired ethylene oxide product, the conversion is still too low to actually bring such ethylene oxide production to an industrial scale. Through the analytical techniques carried out, I found that the iron nanoparticles in the catalyst are exposed to the reaction atmosphere. Thus, I conclude that the poor coverage of these particles is the main reason for the poor conversion and selectivity of ethylene oxide formation. In order to improve the performance of the catalyst, it would be necessary to further optimise the catalyst in order to achieve better results.
Secondary keywords: ethylene oxide;catalysis;induction;Kataliza;Univerzitetna in visokošolska dela;
Type (COBISS): Bachelor thesis/paper
Study programme: 1000372
Embargo end date (OpenAIRE): 1970-01-01
Thesis comment: Univ. v Ljubljani, Fak. za kemijo in kemijsko tehnologijo, UNI Kemijsko inženirstvo
Pages: 35 str.
ID: 19896627