Hydrothermal synthesis of zeolites from pumice in alkaline and saline environment

✍ Scribed by R. Ottanà; L.M. Saija; N. Burriesci; N. Giordano

• Book ID: 104290423
• Publisher: Elsevier Science
• Year: 1982
• Tongue: English
• Weight: 344 KB
• Volume: 2
• Category: Article
• ISSN: 0144-2449
• DOI: 10.1016/s0144-2449(82)80073-0

✦ Synopsis

Lipari pumice has selectively been transformed into zeolites in NaOH/NaCI media. The influence of NaCI and retention times on the degree of zeolitization is discussed for different NaOH concentrations. In the absence of NaCI, the high SIO2/AI203 ratio zeolites ZK-19 and phillipsite appear after long induction periods, whereas the SiO2/AI2Ojich hydroxysodalite and faujasite are formed exclusively for [NaOH] = 120 g 1-1 in the presence of NaCI.