Preparation of Na‐P1‐Type Zeolite and its Composite Material with Nanosized Magnetite |
| |
Authors: | Hiromichi Aono Kazumasa Tamura Erni Johan Toru Yamamoto Naoto Matsue Teruo Henmi |
| |
Affiliation: | 1. Graduate School of Science and Engineering, Ehime University, , Matsuyama, 790‐8577 Japan;2. Faculty of Agriculture, Ehime University, , Matsuyama, 790‐8566 Japan |
| |
Abstract: | The Na‐P1‐type zeolite having a high cation‐exchange capacity (CEC) was obtained using the waste coal fly ash from thermal power stations and a 2M NaOH solution at 100°C. The Na‐P1‐type zeolite was formed with the reaction time of 6 h at 100°C, and its CEC value increased with an increase in the reaction time. The addition of a suitable amount of NaAlO2 to the fly ash was also effective for improving the CEC value. A new composite material consisting of the Na‐P1‐type zeolite and magnetite was synthesized from the fly ash and iron chlorides because the magnetic collection was possible using this composite material after radioactive Cs+ ion adsorption. The existence of nanosized magnetites in the polycrystalline zeolite (several micrometers) was confirmed by TEM observations. The CEC and magnetic property of these composite materials were characterized. |
| |
Keywords: | |
|
|