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dc.contributor.authorSubramanian, Sreedhar
dc.contributor.authorBuscetti, Lola
dc.contributor.authorSimon, Sebastien Charles
dc.contributor.authorSacré, Marion
dc.contributor.authorSjøblom, Johan
dc.date.accessioned2018-03-13T07:52:54Z
dc.date.available2018-03-13T07:52:54Z
dc.date.created2018-03-12T14:50:08Z
dc.date.issued2018
dc.identifier.issn0887-0624
dc.identifier.urihttp://hdl.handle.net/11250/2490202
dc.description.abstractThe ability of a fatty-alkylamine amphiphile to inhibit asphaltene adsorption/deposition, as well as its ability to disperse the asphaltene layers on stainless steel, was studied using a quartz crystal microbalance with dissipation (QCM-D). The experiments were performed both under good solvent conditions and above asphaltene precipitation onset. The adsorption/deposition of asphaltenes from model oil solution in xylene/n-hexane was found to strongly increase up to the asphaltene precipitation onset (i.e., ∼60−65 vol % n-hexane), with a 7−8 times increase of the adsorbed amount, compared with adsorption from xylene. Beyond the precipitation onset, the amount of asphaltene adsorbed/deposited decreases. Under both good solvent and precipitating conditions, the amphiphile was unable to form a protective layer on stainless steel to prevent asphaltene adsorption/deposition. However, the amphiphile exhibited an excellent ability to reduce asphaltene adsorption/deposition by 80−95 wt % when injected along with asphaltene solution. It is found that the interactions between asphaltenes and inhibitor that are responsible for the adsorption/deposition inhibitory action are not of an acid−base nature. Maximum inhibitory action in minimizing the asphaltene adsorption/deposition was observed corresponding to a molar ratio (amphiphile/asphaltenes) of ∼0.10, despite this molar ratio being insufficient to prevent asphaltene precipitation. Similarly, the amphiphile also displayed an ability to remove 90−95 wt % of asphaltenes already adsorbed/deposited on stainless steel under precipitating conditions, thereby showing its effectiveness as both an asphaltene inhibitor (AI) and an asphaltene dispersant (AD) under good solvent conditions, as well as precipitating conditions.nb_NO
dc.language.isoengnb_NO
dc.publisherAmerican Chemical Societynb_NO
dc.relation.urihttps://pubs.acs.org/doi/10.1021/acs.energyfuels.8b00059
dc.titleInfluence of Fatty-Alkylamine Amphiphile on the Asphaltene Adsorption/Deposition at the Solid/Liquid Interface under Precipitating Conditionsnb_NO
dc.typeJournal articlenb_NO
dc.typePeer reviewednb_NO
dc.description.versionacceptedVersionnb_NO
dc.source.journalEnergy & Fuelsnb_NO
dc.identifier.doi10.1021/acs.energyfuels.8b00059
dc.identifier.cristin1572221
dc.relation.projectNorges forskningsråd: 234112nb_NO
dc.description.localcode© American Chemical Society 2018. This is the authors accepted and refereed manuscript to the article. Locked until 26.2.2019 due to copyright restrictions.nb_NO
cristin.unitcode194,66,30,0
cristin.unitnameInstitutt for kjemisk prosessteknologi
cristin.ispublishedtrue
cristin.fulltextoriginal
cristin.fulltextpreprint
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cristin.qualitycode2


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