Naslov
Olefine Content Analysis in FCC Gasoline Fractions by Hyphenated NP-HPLC/DAD and GC

Autori
Fabulić Ruszkowski, Maja ; Telen, Sanda ; Tomić, Tatjana ; Uzorinac Nasipak, Nada

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
Book of abstracts HTC-10 / - , 2008

Skup
10th International Symposium on Hyphenated Techniques in Chromatography and Hyphenated Chromatographic Analyzers (HTC-10)

Mjesto i datum
Brugge, Belgija, 30.01.2008. - 01.02.2008

Vrsta sudjelovanja
Poster

Vrsta recenzije
Nije recenziran

Ključne riječi
Olefine; FCC gasoline; HPLC; GC

Sažetak
Olefin hydrocarbons, which are absent in crude oil, are shown in FCC gasoline fractions as the result of conversion processes. Since these fractions are used for blending the commercial automotive gasoline, knowledge of the composition of FCC gasoline is very important, especially the contents of olefins, due to their influence on octane number1. Chromatographic techniques are a useful tool in both quantitative and qualitative olefin determination in these fractions. The standard normal-phase high-performance liquid chromatography technique (NP HPLC) equipped with refractive index detector (RID) and silica or slightly modified silica columns, used for group- type hydrocarbon determination of light and heavy oil fractions, is not suitable for olefin determination, due to co-elution of olefins with paraffin. This problem was solved by using an additional detector that is sensitive and selective to olefins, but not to paraffin. Diode array detector (DAD) is a common additional detector hyphenated to NP-HPLC. The use of DAD eliminates the need for separation of olefins from paraffin, because paraffin is not active in the UV field. Individual composition of olefin fraction was determined and efficiency of HPLC separation between olefin and aromatic fractions was established.

Izvorni jezik
Engleski

Znanstvena područja
Kemija, Kemijsko inženjerstvo

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