Activated carbon fibers impregnated with Pd and Pt catalysts for toluene removal

作者：Liu Zhen Shu^*; Chen Jian Yuan; Peng Yu Hui

来源：Journal of Hazardous Materials, 2013, 256: 49-55.

DOI：10.1016/j.jhazmat.2013.04.007

• Activated carbon fiber
• Catalytic oxidation
• Palladium
• Platinum
• Toluene

Few studies have investigated the use of activated carbon fibers (ACFs) impregnated with noble metals for the catalytic oxidation of volatile organic compounds (VOCs). This study determined the removal efficiency of toluene as a function of time over ACF-supported metal catalysts. Two catalysts (Pt and Pd), five reaction temperatures (120, 150, 200, 250, and 300 degrees C), and three oxygen contents (6%, 10%, and 21%) were investigated to determine the removal of toluene. To study the effects of the characteristics of the catalysts on toluene removal, the composition and morphology of the ACFs were analyzed using the BET, XPS, ICP, and FE-SEM. The results showed that the 0.42%Pd/ACFs showed greater activity for toluene removal than did 2.68%Pt/ACFs at a reaction temperature of 200 degrees C and an oxygen content of 10%. The main removal mechanism of toluene over the 2.68%Pt/ACFs at reaction temperatures less than 200 degrees C was adsorption. The long-term catalytic activity of the 2.68%Pt/ACFs for toluene removal at a reaction temperature of 250 degrees C and an oxygen content of 10% could be obtained. Furthermore, toluene removal over the 2.68%Pt/ACFs at 200 degrees C could be enhanced with increasing oxygen content.

• 出版日期2013-7-15