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   Articles with "petroleum fractions" as a keyword



Characterization of nitrogen-containing compounds in petroleum fractions by online reversed-phase liquid chromatography-electrospray ionization Orbitrap mass spectrometry

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recommendations! Published in 2021 at "Fuel"

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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recommendations! Published in 2019 at "International Journal of Mass Spectrometry"

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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recommendations! Published in 2017 at "Energy & Fuels"

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
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Recovery of Rare Metals from High-Boiling Petroleum Fractions

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recommendations! Published in 2018 at "Petroleum Chemistry"

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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recommendations! Published in 2020 at "Petroleum Chemistry"

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