Dual functional zeolite catalytic adsorbents for VOCs destruction

• Main Authors: Liu, Kai, 劉凱
• Other Authors: Bai, Hsun-Ling
• Format: Others
• Language: zh-TW
• Published: 2010
• Online Access: http://ndltd.ncl.edu.tw/handle/57314738734257063129

碩士 === 國立交通大學 === 環境工程系所 === 98 === VOCs are the major contaminants emission from the semiconductor and optoelectronic industries. This study is focused on the treatment of VOCs with acetone as the target species by dual functional adsorption/catalytic oxidation using Cu and Ce-supported on zeolites. The catalysts are characterized by SEM、TEM、XRD、UV-Vis、ICP、BET and ESCA analysis. The result shows that bimetallic copper and cerium loading at 4.73wt% and 10.5wt%, respectively, on ZSM-5 by impregnation has the best activity for VOCs removal. This could be due to that metal oxide disperses uniformly on ZSM-5 surface and increases the surface’s active sites. When the acetone concentration is 500ppm, the conversion reaches about 100% at temperature above 200℃. Under the condition of 260℃ and acetone of 1000ppm, the efficiency can remain 95% for 36 hours. The results demonstrated that bimetallic copper and cerium supported on ZSM-5 by impregnation method shows excellent activity for VOCs removal.