Freon gas detecting element

摘要

Freon gas detecting element for detecting the presence of freon gas with of a pair of electrodes, a gas detecting body made of a metal oxide semiconductor and covering the pair of electrodes, and a catalytic layer coated on the gas detecting body. The catalyst layer is made of at least one element selected from the group consisting of V, Mo and W supported by one catalyst carrier selected from the group consisting of Al2O3, SiO2, and SiO 2- Al2O3.