Transformation of petroleum asphaltenes in supercritical alcohols—A tool to change H/C ratio and remove S and N atoms from refined products

Chibiryaev, A. M.; Kozhevnikov, I. V.; Martyanov, Oleg N.

doi:10.1016/j.cattod.2018.10.066

Cited by 11 publications

(1 citation statement)

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“…In addition to having a high potential for refining heavy crude oil through both catalytic and non‐catalytic processes, supercritical alcohols have a high enough chemical reactivity to change heavy organic compounds and add various heteroatomic functional groups to their molecular structures. [ 21 ] Ethanol that is over its critical point (6.38 MPa, 243.1 °C) is referred to as supercritical ethanol. The hydrogen bonds of ethanol get weaken as it reaches a supercritical state, which makes it a potent solvent for gases, organic materials, and other substances.…”

Section: Resultsmentioning

confidence: 99%

Polymer Additives with Gas Barrier and Anti‐Aging Properties Made from Asphaltenes via Supercritical Ethanol

Wu,

Liu,

et al. 2023

Advanced Science

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Asphaltene is often regarded as an undesirable by‐product of petroleum processing, possesses vast reserves with little market value. The typical routes of consuming asphaltene, namely burning and landfilling, pose significant environmental challenges. In this study, low‐value asphaltene is converted into high‐value ethylated carbon clusters (ECC) using a supercritical ethanol technique. The resulting ECC powder demonstrates promising properties for high density polyethylene (HDPE) composite applications. The effects of incorporating ECC on the mechanical, gas barrier, and anti‐aging properties of the composite are investigated. Results show that a 1 wt.% ECC led to a 4.2% and 43.5% increase in tensile strength and elongation at break, a reduction of 45.8% and 30.7% in oxygen and carbon dioxide permeability. Furthermore, ECC exhibits effective UV spectrum absorption and conversion in the wavelength range of 400–600 nm, providing protection against UV spectrum damage to HDPE. The incorporation of ECC not only enhances the properties of polymer composites but also sequesters carbon within the polymer matrix, enabling the valorization of asphaltene while mitigating environmental impact.

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Section: Resultsmentioning

confidence: 99%