Proposal of a voltammetric method for the determination of conjugated dienes in Brazilian naphtha

Andrade, Débora França de; Figueiredo, Elizabeth; Aguiar, Paula D’; Troise, Maria H.F.; Tristão, Maria Luiza B.; Elia, Eliane D’; Miranda, J. L.

doi:10.1016/j.fuel.2006.05.008

Cited by 5 publications

(1 citation statement)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…There are reported methods based on different analytical techniques like GC-FID, GC-MS, and GC-NCD after derivatization of conjugated diolefins, [3] NMR, [4,5] phosphorescence spectroscopy, [6] UV-visible spectroscopy, [7] polarography, [8,9] near infra-red (NIR), [10] voltametric, [11] electrochemical reduction method, [12] HPLC, [13] and supercritical fluid chromatography (SFC) with photo diode array (PDA) detector [14] to determine the conjugated dienes content in gasolines. A beautiful review on the conjugated dienes estimation is written by Miranda et al [15] Ghazvini et al [13] applied an HPLC-UV based method with chromatographic conditions similar to described in IP 391 method.…”

Section: Introductionmentioning

confidence: 99%

HPLC Method for Monitoring the Conjugated Dienes and Olefins in FCC, Coker Gasolines, and their Hydrogenated Products

Yadav

Kagdiyal

Arun

et al. 2015

Journal of Liquid Chromatography & Related Technologies

View full text Add to dashboard Cite

The conjugated dienes if present in gasoline have the tendency to polymerize and cause fouling during various refinery processes. Therefore the conjugated dienes need to be reduced. While the conjugated dienes in gasoline are undesirable, the olefins are desirable and act as octane booster. The selective hydrogenation unit selectively reduces conjugated dienes keeping the content of olefins more or less intact. A method based on HPLC-UV-RI has been reported to simultaneously monitor the conjugated dienes and olefins content in the gasoline range samples. The reported method has the detection level of 0.02 (w/W)% for the total conjugated dienes with respect to 2,4-dimethyl 1,3-pentadiene (DMP). The calibration curve for DMP is drawn in the range 0.2-2.5% (w/W) and the R 2 is found to be 0.9972. The method is also applicable for the estimation of olefins content above 10% (w/W) level with respect to 1-octene. The calibration curve is drawn in the range 10-50% (w/W) of 1-octene and the R 2 is found to be 0.9995.

show abstract