EARTH

[1901-09-05] Effect of roasting on the catalytic activity to elemental mercury of low-loading CuCl₂/γ-Al₂O₃

○Shu Yang¹, Liyuan Chai^1,2, Cao Liu¹, Kaisong Xiang¹, Hui Liu^1,2 (1. Central South University, 2. Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution)

Chairman：Naoki Hiroyoshi（Hokkaido University）

Keywords:Elemental Mercury, Catalyst, Cupric chloride, Roasting, Copper aluminate

Mercury pollution from flue gas has drawn attention worldwide. To achieve efficient catalytic oxidation of Hg, a low-loading catalyst CuCl₂/γ-Al₂O₃ was designed. This catalyst synthesized from impregnation and roasting process shows high activity up to 8% for selective catalytic oxidation. The roasting process during synthetic stage affects the CuCl₂ forms and the catalytic activity. Only a small amount of inactive copper aluminate is generated after roasting of CuCl₂/γ-Al₂O₃ in air and results in more catalytic active substance CuCl₂ in the surface of the carrier.