%0 Journal Article %T Asphaltene Cross-flow Membrane Ultrafiltration on a Preparative Scale and Feedstock Reconstitution Method %+ IFP Energies nouvelles (IFPEN) %+ Laboratoire de catalyse en chimie organique (LACCO) %A Marques, J. %A Guillaume, D. %A Merdrignac, I. %A Espinat, D. %A Barré, L. %A Brunet, S. %< avec comité de lecture %@ 1294-4475 %J Oil & Gas Science and Technology - Revue d'IFP Energies nouvelles %I Institut Français du Pétrole (IFP) %V 64 %N 6 %P 795-806 %8 2009-11 %D 2009 %R 10.2516/ogst/2009053 %Z Physics [physics]Journal articles %X In order to understand asphaltene reactivity under hydrotreatment conditions,a new strategy is proposed. A cross-flow membrane ultrafiltration method is applied in order to control asphaltene aggregate size polydispersity. At the same time, a feedstock reconstitution method that allowsasphaltene dispersion in maltenes is established. Catalytic tests are carried out, showing that thedeveloped feedstock reconstitution method allows one to preserve asphaltenes' natural reactivity underhydrotreatment conditions. In further studies, the developed methodology will allow the study of the effectof asphaltene aggregate size on hydrotreatment activities by the reconstitution of feedstocks containingcontrolled aggregate size. %G English %2 https://ifp.hal.science/hal-02001587/document %2 https://ifp.hal.science/hal-02001587/file/ogst08134.pdf %L hal-02001587 %U https://ifp.hal.science/hal-02001587 %~ IFP %~ CNRS %~ UNIV-POITIERS %~ INC-CNRS %~ OGST %~ TEST2-HALCNRS