Microwave-assisted effective and rapid regeneration of honycomb type synthetic zeolite

2014 Fiscal Year Final Research Report

• Project/Area Number: 24561032
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Nuclear fusion studies
• Research Institution: National Institute for Fusion Science
• Principal Investigator: TANAKA MASAHIRO 核融合科学研究所, ヘリカル研究部, 准教授 (00435520)
• Co-Investigator(Renkei-kenkyūsha): TAKAYAMA Sadatsugu 核融合科学研究所, ヘリカル研究部, 准教授 (40435516)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: トリチウム安全取扱い / マイクロ波加熱 / シングルモード共振器 / 電場加熱 / 磁場加熱 / ハニカム型合成ゼオライト / 誘電特性

Outline of Final Research Achievements

A synthetic honeycomb type A zeolite adsorbent was regenerated through microwave irradiation in a single-mode cavity microwave at 2.46 GHz.The regeneration mechanism was investigated by comparing the heating properties, thermogravimetric properties, and dielectric properties of the synthetic zeolite samples. The hydrated zeolite sample was easily heated to over 200 oC by dielectric heating method. The adsorbed water in the hydrated zeolite initially acted as a heating agent by absorbing microwave energy, because the dielectric loss factor of water is higher than that of synthetic zeolite around 2.5 GHz. On the other hands, in the case of the inductive heating, the zeolite sample was only heated to a temperature of 71 oC and the regeneration process of zeolite was not complete. A comparison of dielectric heating by an electric field with inductive heating by a magnetic field showed that the regeneration process by microwave irradiation was particularly beneficial in dielectric heating.

Free Research Field

核融合理工学