Influence of the Si/Al framework ratio on the microporosity of dealuminated mordenite as determined from N-2 adsorption
Dealuminated mordenites depicting SiO2/Al2O3 molar ratios in the range 10-206 were analyzed through adsorption methods. The Type I-IV hybrid shape of the N-2 adsorption isotherms at 76 K on dealuminated mordenites indicated rather high micropore contents, though some amount of mesopores of slit-like...
| Autores: | , , , , , |
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| Tipo de documento: | artigo |
| Estado: | Versão publicada |
| Data de publicação: | 2006 |
| País: | México |
| Recursos: | Universidad Nacional Autónoma de México |
| Repositório: | Sistema de Información de la Facultad de Ciencias, UNAM |
| OAI Identifier: | oai:repositorio.fciencias.unam.mx:11154/1304 |
| Acesso em linha: | http://hdl.handle.net/11154/1304 |
| Access Level: | Acceso aberto |
| Palavra-chave: | Chemistry, Multidisciplinary Engineering, Chemical dealuminated mordenite high-resolution alpha s plots supermicropores ultramicropores Dubinin-Astakhov |
| Resumo: | Dealuminated mordenites depicting SiO2/Al2O3 molar ratios in the range 10-206 were analyzed through adsorption methods. The Type I-IV hybrid shape of the N-2 adsorption isotherms at 76 K on dealuminated mordenites indicated rather high micropore contents, though some amount of mesopores of slit-like geometry was also present. Micropore volumes and sizes were measured through alpha(S) , t , and DA-plots, as well as by the NLDFT approach. Results indicated that mordenite dealumination caused micropore opening and widening as well as the emergence of further slit-like mesopores |
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