c-Oriented columnar MFI films made by secondary growth of randomly oriented seed monolayers, deposited using sonication-assisted covalent attachment, exhibit n-hexane/2,2-dimethylbutane separation factor of up to 10 4, n-/i-butane separation factor of up to 50, and p-/o-xylene separation factor of up to 2. A MFI film from a-oriented seed layer shows lower separation factors for the linear vs. branched isomers but higher separation factor for p-/o-xylene.
Bibliographical noteFunding Information:
Acknowledgments Funding from NSF (CTS-0522518) and UOP LLC through IPrime is gratefully acknowledged. All char- acterizations were performed at the University of Minnesota Characterization Facility supported from NSF through the National Nanotechnology Infrastructure Network (NNIN).
- Preferred orientation