Hydrophobic polyamide nanofilms provide rapid transport for crude oil separation

Author:

Li Siyao1ORCID,Dong Ruijiao12ORCID,Musteata Valentina-Elena3ORCID,Kim Jihoon145ORCID,Rangnekar Neel D.6ORCID,Johnson J. R.6ORCID,Marshall Bennett D.6ORCID,Chisca Stefan3ORCID,Xu Jia17,Hoy Scott6ORCID,McCool Benjamin A.6,Nunes Suzana P.3ORCID,Jiang Zhiwei15ORCID,Livingston Andrew G.15ORCID

Affiliation:

1. Barrer Center, Department of Chemical Engineering, Imperial College London, South Kensington Campus, London SW7 2AZ, UK.

2. Shanghai Center for Systems Biomedicine, Key Laboratory of Systems Biomedicine, Shanghai Jiao Tong University, Shanghai 200240, China.

3. King Abdullah University of Science and Technology, Biological and Environmental Science and Engineering Division, Advanced Membranes and Porous Materials Center, Thuwal 23955-6900, Saudi Arabia.

4. Process Design and Research Center, Chemical and Process Technology Division, Korea Research Institute of Chemical Technology, Daejeon 34114, South Korea.

5. School of Engineering and Materials Science, Queen Mary University of London, London E1 4NS, UK.

6. Corporate Strategic Research, ExxonMobil Research and Engineering, Annandale, NJ 08801, USA.

7. Key Laboratory of Marine Chemistry Theory and Technology (Ministry of Education), School of Materials Science and Engineering, College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, China.

Abstract

Hydrocarbon separation relies on energy-intensive distillation. Membrane technology can offer an energy-efficient alternative but requires selective differentiation of crude oil molecules with rapid liquid transport. We synthesized multiblock oligomer amines, which comprised a central amine segment with two hydrophobic oligomer blocks, and used them to fabricate hydrophobic polyamide nanofilms by interfacial polymerization from self-assembled vesicles. These polyamide nanofilms provide transport of hydrophobic liquids more than 100 times faster than that of conventional hydrophilic counterparts. In the fractionation of light crude oil, manipulation of the film thickness down to ~10 nanometers achieves permeance one order of magnitude higher than that of current state-of-the-art hydrophobic membranes while retaining comparable size- and class-based separation. This high permeance can markedly reduce plant footprint, which expands the potential for using membranes made of ultrathin nanofilms in crude oil fractionation.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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