Lu Chi-Yuan, Tseng Hui-Hsin, Wey Ming-Yen, Chuang Kui-Hao, Kuo Jia-Hong
Department of Public Health, Chung Shan Medical University, Taichung, Taiwan, ROC.
J Environ Manage. 2009 Apr;90(5):1884-92. doi: 10.1016/j.jenvman.2008.12.017. Epub 2009 Feb 8.
This study investigated the use of Cu/Al(2)O(3), Co/Al(2)O(3), Fe/Al(2)O(3), and Ni/Al(2)O(3) catalysts for the growth of carbon nanotubes (CNTs). These CNTs were used as support for Co catalyst preparation and Co/CNT catalysts were applied to a catalytic reaction to remove BTEX, PAHs, SO(2), NO, and CO simultaneously in a pilot-scale incineration system. The analyzed results of EDS and XRD showed low metal content and good dispersion characteristics of the Al(2)O(3)-supported catalysts by excess-solution impregnation. FESEM analyzed results showed that the CNTs that were synthesized from Co, Fe, and Ni catalysts had a diameter of 20nm, whereas those synthesized from Cu/Al(2)O(3) had a diameter of 50nm. Pilot-scale test results demonstrated that the Co/CNT catalyst effectively removed air pollutants in the catalytic reaction and that there was no obvious deactivation by Pb, water vapor, and coke deposited in the process. The thermal stabilization at 250 degrees C and hydrophobicity properties of CNTs enhanced the application of CNT catalysts in flue gas.
本研究考察了Cu/Al₂O₃、Co/Al₂O₃、Fe/Al₂O₃和Ni/Al₂O₃催化剂用于碳纳米管（CNT）生长的情况。这些碳纳米管被用作制备Co催化剂的载体，并且Co/CNT催化剂被应用于催化反应，以在中试规模的焚烧系统中同时去除苯系物、多环芳烃、SO₂、NO和CO。EDS和XRD的分析结果表明，通过过量溶液浸渍法制备的Al₂O₃负载型催化剂具有低金属含量和良好的分散特性。FESEM分析结果显示，由Co、Fe和Ni催化剂合成的碳纳米管直径为20nm，而由Cu/Al₂O₃合成的碳纳米管直径为50nm。中试规模的测试结果表明，Co/CNT催化剂在催化反应中能有效去除空气污染物，并且在该过程中不会因Pb、水蒸气和焦炭沉积而明显失活。碳纳米管在250℃的热稳定性和疏水性增强了碳纳米管催化剂在烟气中的应用。
