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Title: | Influence of the Si/Al framework ratio on the microporosity of dealuminated mordenite as determined from N-2 adsorption |
Authors: | Petranovskii, V Portillo, R Rojas, F Lara, VH Hernández, MA Avalos, MA |
Issue Date: | 2006 |
Abstract: | 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 even though a slight structural collapse toward creation of mesopore zones occurred at high dealumination extents. |
URI: | http://hdl.handle.net/11154/1304 |
ISSN: | 0149-6395 |
Appears in Collections: | Ciencias
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