Karakterizacija uzoraka nafte domaćeg porijekla elementarnom analizom i spektroskopije NMR

master's thesis

• Title (english): Domestic crude oil characterization by elemental analysis and NMR spectroscopy
• Author: Ozana Frigan
• Mentor: Predrag Novak (mentor)
• Mentor: Jelena Parlov Vuković (mentor)
• Committee member: Predrag Novak (predsjednik povjerenstva)
• Committee member: Ivica Đilović (član povjerenstva)
• Committee member: Ines Primožič (član povjerenstva)
• Committee member: Tomica Hrenar (član povjerenstva)
• Granter: University of Zagreb; Faculty of Science; (Department of Chemistry); Zagreb
• Defense date and country: 2020-09-30, Croatia
• Scientific / art field, discipline and subdiscipline: NATURAL SCIENCES; Chemistry

Abstract

Nafta je kompleksna smjesa spojeva, čijom se detaljnom analizom i karakterizacijom dobiva uvid u njena kemijska i fizikalna svojstva. Poznavanje kemijskog sastava je vrlo bitno za preradu nafte, kako bi se dobili produkti željenih karakteristika te kako bi se udovoljili zahtjevi tržišta, kao i ekološki zahtjevi. U ovome radu provedena je karakterizacija uzoraka nafte koji su porijeklom iz Republike Hrvatske. Za karakterizaciju su korištene dvije metode, elementna analiza i spektroskopija NMR. Elementnom analizom je dobiven uvid u masene udjele ugljika, dušika i vodika u uzorku. Od spektroskopskih metoda korištene su jednodimenzijske tehnike 1H i 13C NMR. Dobiveni su podaci o ukupnom sadržaju vodika i ugljika u smjesi, te njihova raspodjela po funkcijskim skupinama. Određeni su i parametri kao što su prosječna duljina lanaca te C/H omjer. Na temelju dobivenih podataka, provedena je međusobna usporedba nafti te je dobiven uvid u razlike kemijskih sastava nafte podrijetlom s područja Republike Hrvatske.

Abstract (english)

Crude oil is a complex compound mixture whose chemical and physical properties can be determined by detailed chemical analysis and characterization. In order to obtain products with desired properties and to meet market and environmental demands, it is important to know chemical composition of the sample. In this paper, domestic crude oil samples were characterized by applying two methods, NMR spectroscopy and elemental analysis. Elemental analysis provided insight into the mass fractions of carbon, nitrogen and hydrogen in the sample. Spectroscopic analysis was performed using one-dimensional 1H and 13C NMR methods. Data on the total hydrogen and carbon content in the mixture and their distribution by functional groups was obtained. Parameters, such as average chain length and C / H ratio were also determined. A mutual sample comparison based on the obtained data, provided an insight into the differences between chemical compositions of the crude oil originating from the territory of the Republic of Croatia.

• Keywords: NMR; nafta; elementna analiza
• Keywords (english): NMR; crude oil; elemental analysis
• Language: croatian
• URN:NBN: urn:nbn:hr:217:424575
• Study programme: Title: Graduate university studies in chemistry; specializations in: Research programme; Course: Research programme; Study programme type: university; Study level: graduate; Academic / professional title: magistar/magistra kemije (magistar/magistra kemije)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2020-11-03 13:07:43