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Hierarchical zeolites as catalysts for methanol conversion reactions
| Content Provider | Semantic Scholar |
|---|---|
| Author | Zhu, X. Xiaochun |
| Copyright Year | 2015 |
| Abstract | Zeolites find widespread application as microporous solid acid catalysts in the chemical industry. Their performance is often limited by slow molecular diffusion in the zeolite micropores. Hierarchical zeolites that contain intracrystalline mesopores can solve this problem because of increased diffusion rates. They can be prepared by using expensive templates or by applying tedious post-synthesis procedures. Here we present a novel and inexpensive approach to obtain hierarchical SSZ-13 zeolite (CHA topology) without additional organic additives. We show that fluoride anions in an alkaline synthesis gel alter zeolite growth in such way that fine grained zeolite crystals are obtained with additional micropores (~ 0.5 nm) that are larger than the inherent SSZ-13 micropores (0.38 nm). This dual porosity zeolite exhibits much increased lifetime in the industrially important methanol-to-olefins reaction. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | https://pure.tue.nl/ws/files/8809282/20151202_Zhu.pdf |
| Alternate Webpage(s) | https://pure.tue.nl/ws/portalfiles/portal/8809282/20151202_Zhu.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
