Abstract
The cobalt-based ZIF-67 has been evaluated for the adsorptive propylene/propane separation in a fixed bed. Characterization techniques and dynamic measurements have been performed over ZIF-67 to evaluate its potential in this defiant process. Cobalt promotes a more rigid framework than zinc in the isostructural ZIF-8. Although the adsorption affinity of ZIF-67 for both hydrocarbons is similar, the lower flexibility of the framework makes ZIF-67 behave with a clear preference towards propane. This inverse selectivity promotes the enrichment in propylene content upon breakthrough, and may simplify the separation scheme. Therefore, ZIF-67 adsorptive separation is presented as an alternative to energy-demanding distillation.
Original language | English (US) |
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Pages (from-to) | 10-14 |
Number of pages | 5 |
Journal | Chemical Engineering Journal |
Volume | 360 |
DOIs | |
State | Published - Mar 15 2019 |
Keywords
- Adsorption
- Propane
- Propylene
- Separation
- ZIF-67
- Zeolitic Imidazolate Framework
ASJC Scopus subject areas
- General Chemistry
- Environmental Chemistry
- General Chemical Engineering
- Industrial and Manufacturing Engineering