Solid-state ion exchange between Na and Cs chloride and two NH 4 -b zeolites with different SiO 2 /Al 2 O 3 ratios proceeding during heat treatment in He has been studied. Temperature-programmed gas evolution monitored by mass spectrometry ( TPE/MS ) and thermogravimetric analysis combined with 1-pr
✦ LIBER ✦
Solid-state ion exchange in beta zeolites. II: Systems ammonium chloride/Na-, Cs- and H-β
✍ Scribed by Vesselina P. Mavrodinova
- Publisher
- Elsevier Science
- Year
- 1998
- Tongue
- English
- Weight
- 209 KB
- Volume
- 24
- Category
- Article
- ISSN
- 1387-1811
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Lanthanum-exchanged beta zeolites have been prepared by a solid-state ion-exchange procedure which consists of calcining in static conditions a mechanical mixture of LaCl 3 .7H 2 O and H-beta zeolite. The exchanged samples have been characterized at various steps of their preparation by XRD, BET, F