Characterization of nitrogen-containing compounds in petroleum fractions by online reversed-phase liquid chromatography-electrospray ionization Orbitrap mass spectrometry
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DOI: 10.1016/j.fuel.2020.119035
Abstract: Abstract Characterization of heteroatom compounds in crude oils is very important in petroleum production and processing. The ultrahigh-resolution Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR MS) is a powerful MS technique for it but… read more here.
Keywords: petroleum fractions; mass spectrometry; mass; orbitrap ... See more keywords
Acid-selective mass spectrometric analysis of petroleum fractions
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DOI: 10.1016/j.ijms.2018.10.029
Abstract: Abstract Naphthenic acids are cycloaliphatic carboxylic acids that are naturally-occurring constituents of petroleum. Analytical mass spectrometric methods aimed at carboxylic acids tend to involve deprotonation to generate carboxylate anions, but also produce detectable ions of… read more here.
Keywords: petroleum; acid selective; mass; petroleum fractions ... See more keywords
Comparison of Preparation Methods for the Determination of Metals in Petroleum Fractions (1000 °F+) by Microwave Plasma Atomic Emission Spectroscopy
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DOI: 10.1021/acs.energyfuels.7b00654
Abstract: Microwave induced plasma atomic emission spectroscopy (MP-AES) with nitrogen gas was employed for the determination of trace elements in petroleum fractions with a boiling point above 1000 °F, using direct dilution in an organic solvent.… read more here.
Keywords: petroleum fractions; atomic emission; plasma atomic; emission spectroscopy ... See more keywords
Recovery of Rare Metals from High-Boiling Petroleum Fractions
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DOI: 10.1134/s0965544118100110
Abstract: The possibility of recovering compounds of rare and other valuable metals from bottom ash from the combustion of high-boiling petroleum fractions (HBF BA) by chlorination in a fluidized bed reactor has been shown. The reactivity of… read more here.
Keywords: petroleum fractions; high boiling; boiling petroleum; recovery rare ... See more keywords
Hydrotreating of Middle Petroleum Fractions of Various Compositions in the Presence of Catalysts Immobilized in Pores of Aromatic Frameworks
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DOI: 10.1134/s0965544120030123
Abstract: Abstract Sulfide catalysts PAF-FC-1–NiWS and PAF-FC-1–NiMoS synthesized by the decomposition of the [N( n -Bu) 4 ] 2 [Ni(MeS 4 ) 2 ] (Me = Mo/W) thiosalt in pores of the PAF-FC-1 mesoporous aromatic framework… read more here.
Keywords: middle petroleum; various compositions; petroleum; petroleum fractions ... See more keywords