Iodine Adsorption of Shaped Silicalite-1 Silica Zeolite
Jia Zhou1, Pu Bai2,Tianchi
Li1, Qi Chen1,Tian
Lan1, Fang Liu1, Zhongwei
Yuan1, Weifang Zheng1, Wenfu
Yan3*, Taihong Yan1*
(1. China Institute of Atomic Energy, 102413,Beijing, China 2. Luoyang
Jalon Micro-Nano New Materials Co., Ltd,471900, Luoyang, China 3. Jilin
University,130012,Changchun,China)
First corresponding author : Taihong Yan, e-mail: yanth@ciae.ac.cn
Second corresponding author : Wenfu Yan, e-mail:
YANW@JLU.EDU.CN
Abstract: Nuclear energy is one of the most promising clean energy
sources in the future. The effective adsorption capture of iodine
produced in the spent fuel reprocessing is an effective way to avoid the
harm of iodine to the ecological environment and human health. Efforts
have been made to devise materials, which can effectively capture
radioactive iodine without being damaged by moisture and nitric acid. In
the investigation described herein, a new kind of shaped silicalite-1
all-silica zeolite with a binder which was for direct industrial
application other than power was synthesized and tested for iodine
adsorption performance. Although the existence of binder in shaped
silicalite-1 all-silica zeolite, it still exhibited high iodine
adsorption capacities of 507 mg g-1, which was
superior to inorganic adsorbents such as silver-containing zeolite
mainly used currently, and was comparable with that of power
silicalite-1 reported previously. Moreover, the shaped silicalite-1
all-silica zeolite could be cyclic utilization due to its reversible
adsorption. All these show that the shaped silicalite-1 all-silica
zeolite provides the possibility for the application of iodine
adsorption in industrial post-processing conditions.
Key words: spent fuel reprocessing; iodine adsorption; shaped all-silica
zeolite