Monitoring the liquid/liquid extraction of naphthenic acids in brazilian crude oil using electrospray ionization FT-ICR mass spectrometry (ESI FT-ICR MS)

► Non-continuum liquid–liquid extraction of naphthenic acids at different pHs from two crude oil samples. ► The residue and the acid fraction were characterized using ESI(−) FT-ICR MS, FTIR and sulfur analysis. ► We observe a decreasing TAN in the original oil with increasing pH (7→14), reaching a v...

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Veröffentlicht in:	Fuel (Guildford) 2013-06, Vol.108, p.647-655
Hauptverfasser:	Colati, Keroly A.P., Dalmaschio, Guilherme P., de Castro, Eustáquio V.R., Gomes, Alexandre O., Vaz, Boniek G., Romão, Wanderson
Format:	Artikel
Sprache:	eng
Schlagworte:	Applied sciences Corrosion Crude oil Crude oil, natural gas and petroleum products Energy Energy. Thermal use of fuels Exact sciences and technology Extraction Extraction process Fourier transforms FT-ICR MS Fuels Ionization Liquids Mass spectrometry Naphthenic acid Naphthenic acids Petroleomics Processing of crude oil and oils from shales and tar sands. Processes. Equipment. Refinery and treatment units
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Zusammenfassung:	► Non-continuum liquid–liquid extraction of naphthenic acids at different pHs from two crude oil samples. ► The residue and the acid fraction were characterized using ESI(−) FT-ICR MS, FTIR and sulfur analysis. ► We observe a decreasing TAN in the original oil with increasing pH (7→14), reaching a value of almost zero at pH 14. ► The most abundant naphthenic acids extracted are those with short alkyl chain lengths (
ISSN:	0016-2361 1873-7153
DOI:	10.1016/j.fuel.2013.02.007