Unique catalytic performance of mesoporous molecular sieves containing zeolite units in transformation of m-xylene

Autor:	Rabindran J. Balasamy, Taiwo Odedairo, Sulaiman S. Al-Khattaf
Rok vydání:	2011
Předmět:	Chemistry Process Chemistry and Technology Inorganic chemistry Polymer chemistry Disproportionation Microporous material Zeolite Transalkylation Selectivity Mesoporous material Molecular sieve Catalysis
Zdroj:	Applied Catalysis A: General. :223-233
ISSN:	0926-860X
DOI:	10.1016/j.apcata.2011.10.007
Popis:	Integrating ZSM-5 zeolite units into two different mesostructured materials, led to high p-xylene selectivity in the transformation of m-xylene. The activity and selectivity of both composite materials were compared with those of Al-MCM-41, Al-MCM-48 and the conventional microporous ZSM-5. A bimolecular pathway involving disproportionation and transalkylation, together with the presence of ZSM-5 zeolite units in the composite materials, was responsible for this high p-xylene selectivity. The catalysts were characterized by powder XRD, TGA, SEM, nitrogen sorption and FT-IR of pyridine adsorption. The selectivity towards p-xylene over the different catalysts under study follows the order: conventional ZSM-5 E Z/48M-4 , E Z/41M-4 (transalkylation) > E Z/48M-3 , E Z/41M-3 (disproportionation) .
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::19fb3440e978729894a51f7e2c6d42e5 https://doi.org/10.1016/j.apcata.2011.10.007 Zobrazit plný text záznamu Full Text from ScienceDirect