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Effect of high-energy ball milling on the structural stability, surface and catalytic properties of small-, medium- and large-pore zeolites

✍ Scribed by P.A. Zielinski; A. Van Neste; D.B. Akolekar; S. Kaliaguine

Publisher: Elsevier Science
Year: 1995
Tongue: English
Weight: 617 KB
Volume: 5
Category: Article
ISSN: 0927-6513
DOI: 10.1016/0927-6513(95)00050-j

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✦ Synopsis

Samples of NaA, CaA, KL, Silicalite-1, H-ZSM-5 and HY zeolites were submitted to high-energy ball milling and their properties were examined as functions of milling time. BET surface area, micropore volumes and external surface area as well as x-ray diffraction crystallinity and catalytic activity in the micropulse conversion of hydrocarbons with various kinetic diameters (n-hexane, isooctane and toluene) were monitored. The results indicate that the mechanical resistance of the zeolite lattice is clearly correlated with its Si/A1 ratio. For small-pore zeolites an initial increase in catalytic activity is associated with an increase of the accessible surface area.

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