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Preparation of Na ‐ P 1‐Type Zeolite and its Composite Material with Nanosized Magnetite
Author(s) -
Aono Hiromichi,
Tamura Kazumasa,
Johan Erni,
Yamamoto Toru,
Matsue Naoto,
Henmi Teruo
Publication year - 2013
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/jace.12557
Subject(s) - zeolite , fly ash , composite number , ion exchange , adsorption , chemical engineering , magnetite , cation exchange capacity , chemistry , crystallite , materials science , nuclear chemistry , catalysis , ion , metallurgy , composite material , geology , organic chemistry , soil science , engineering , soil water
The Na ‐ P 1‐type zeolite having a high cation‐exchange capacity ( CEC ) was obtained using the waste coal fly ash from thermal power stations and a 2 M NaOH solution at 100°C. The Na ‐ P 1‐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 NaAlO 2 to the fly ash was also effective for improving the CEC value. A new composite material consisting of the Na ‐ P 1‐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.