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Prof. Hisham M. Aly :: Publications: |
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| Title: | Alteration of aluminum pillared clays for enhanced catalytic activity |
| Authors: | A. Clearfield, H.M. Aly, R.A. Cahill, G.P.D. Serrette, W.-L. Shea and T.-Y. Yen |
| Year: | 1994 |
| Keywords: | Not Available |
| Journal: | Zeolites and Microporous Crystals |
| Volume: | Not Available |
| Issue: | Not Available |
| Pages: | 433-442 |
| Publisher: | Elsevier |
| Local/International: | International |
| Paper Link: | Not Available |
| Full paper | Not Available |
| Supplementary materials | Not Available |
| Abstract: |
Saponite and Montmorillonite AI13 pillared clays were subjected to heat treatments up to 750°C. The pillars were found to rehydrate and exhibit enhanced cation and anion exchange capacities. Treatment of the pillared clays with dilute HCI solubilized increased amounts of aluminum accompanied by an increase in surface area and pore size. Treatment of the pillared clays with sulfate or phosphate ion increased the number of Bronsted and Lewis acid sites. 27Al solid-state NMR spectra indicated formation of a "tAlz03 type structure for the pillars. |
