Improved catalytic performance of hierarchical ZSM-5 synthesized by desilication with surfactants
Publikation: Beitrag in Fachzeitschrift › Forschungsartikel › Beigetragen › Begutachtung
Beitragende
Abstract
Hierarchical ZSM-5 zeolites were synthesized by alkaline desilication and a surfactant induced re-assembly. Contrary to the purely alkaline desilicated zeolites a strong increase in external surface area, a narrow pore size distribution of 3-10 nm and a decreased Brönsted acidity could be achieved when using CTAB as a surfactant throughout the alkaline treatment. The hierarchical pore system and the decreased acidity lead to an improved catalyst lifetime in the methanol to hydrocarbon conversion. A further improvement could be accomplished by increasing the surfactant concentration during the desilication re-assembly preparation. Tailoring of mesopore size and specific surface area was achieved using surfactants with different chain lengths.
Details
Originalsprache | Englisch |
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Seiten (von - bis) | 148-157 |
Seitenumfang | 10 |
Fachzeitschrift | Microporous and mesoporous materials |
Jahrgang | 165 |
Publikationsstatus | Veröffentlicht - 1 Jan. 2013 |
Peer-Review-Status | Ja |
Schlagworte
ASJC Scopus Sachgebiete
Schlagwörter
- Hierarchical ZSM-5, Improved catalytic lifetime, Mesoporous ZSM-5, Methanol to hydrocarbon, Surfactant assisted desilication