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Novel, uniform nanostructured catalytic membranes |
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| Authors: | P C Stair C Marshall G Xiong H Feng M J Pellin J W Elam L Curtiss L Iton H Kung M Kung H-H Wang |
| Affiliation: | (1) Department of Chemistry and Center for Catalysis and Surface Science, Northwestern University, Evanston, IL 60208, USA;(2) Chemistry Division, Argonne National Laboratory, Argonne, IL 60439, USA;(3) Materials Science Division, Argonne National Laboratory, Argonne, IL 60439, USA;(4) Chemical Engineering Division, Argonne National Laboratory, Argonne, IL 60439, USA;(5) Energy Systems Division, Argonne National Laboratory, Argonne, IL 60439, USA;(6) Chemical Engineering Department, Northwestern University, Evanston, IL 60208, USA |
| Abstract: | Nanostructured membrane structures have been fabricated by a combination of anodic aluminum oxidation (AAO) and atomic layer deposition (ALD) for use as platforms for the synthesis of highly uniform heterogeneous catalysts. The ALD method makes it possible to control pore diameters on the Angstrom scale even when the overall pore diameter is 10’s to 100’s of nanometers. AAO membranes imbedded in an aluminum sealing ring have been tested for flow properties and found to follow Knudsen diffusion behavior. Vanadia-coated membranes have been tested for the catalytic oxidative dehydrogenation of cyclohexane and show improved selectivity at the same conversion compared to conventional powdered alumina supported vanadia catalysts. |
| Keywords: | nanostructured membranes anodic aluminum oxidation (AAO) atomic layer deposition (ALD) |
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