A HIGHLY EFFICIENT INORGANIC ADSORBER FOR AIRBORNE IODINE SPECIES (SILVER ZEOLITE DEVELOPMENT STUDIES)

摘要

A synthetic zeolite, Linde Molecular Sieve 13X, converted to the silver form strongly adsorbs inorganic and organic species of airborne iodine. As a filter material for the cleanup of iodine from reactor con-tainment atmospheres, it has ideal properties of non-flammability, high temperature operability with adsorp¬tion of iodine up to 500°C, retention of iodine up to 1000°C, and a rapid reaction time. Retentions of greater than 99.98% have been measured for elemental iodine and for methyl iodide for a variety of conditions vary¬ing from dry flows at room temperature, dry flows at 500°C, and steam-air mixtures. Other promising applications of this type of material to the nuclear industry include (a) cleanup of dissolver off-gas from chemical processing plant operations, (b) filter materials for health physics safety devices such as face masks and air monitors, and (c) adsorbing filters in sampling devices.