Abstract
The impact of surface-selective coatings on water permeation through a membrane when exposed to catalytic fast pyrolysis (CFP) vapor products was studied by tailoring the surface properties of the membrane coating from superhydrophilic to superhydrophobic. Our approach used high-performance architectured surface-selective (HiPAS) membranes that were inserted after a CFP reactor. At this insertion point, the inner wall surface of a tubular membrane was exposed to a mixture of water and upgraded product vapors, including light gases and deoxygenated hydrocarbons. Under proper membrane operating conditions, a high selectivity for water over one-ring upgraded biomass pyrolysis hydrocarbons was observed as a result of a surface-enhanced capillary condensation process. Owing to this surface-enhanced effect, HiPAS membranes have the potential to enable high flux separations, suggesting that water can be selectively removed from the CFP product vapors.
| Original language | American English |
|---|---|
| Pages (from-to) | 8343-8348 |
| Number of pages | 6 |
| Journal | Energy and Fuels |
| Volume | 30 |
| Issue number | 10 |
| DOIs | |
| State | Published - 20 Oct 2016 |
Bibliographical note
Publisher Copyright:© 2016 American Chemical Society.
NREL Publication Number
- NREL/JA-5900-66719
Keywords
- catalytic fast pyrolysis
- inorganic membrane
- porous membrane
- superhydrophilic
- superhydrophobic
- upgraded pyrolysis vapors