| abstract |
PURPOSE: To enhance iodine adsorbing capacity in a wide temp. range by adding and depositing an iodine adsorbing metal or a salt thereof to a carrier having small pores with an average pore size of 40W200Å on a surface of large pores with an average pore size of 200W2,000Å. n CONSTITUTION: Plural particles having small pores with an average pore size of 40W200Å is prepared and, by binding said particles to form plural large pores with an average pore size of 200W2,000Å between aforementioned particles, the carrier is formed and an iodine adsorbing metal or a salt thereof is added and deposited to the resulting carrier to prepare the iodine adsorbing material. As a carrier material, alumina or silica gel can be used and said carrier can be used in a shape of a particle form or, in addition, a honeycomb like integral structure. As the iodine adsorbing metal, there is Ag, Cu or Pb. The obtained adsorbing material is effective against radioactive iodine in a waste gas of a nuclear power plant or, in addition, effective in removing SO 2 , NO 2 in a wide range waste gas. n COPYRIGHT: (C)1981,JPO&Japio |