改性活性碳纤维制备及脱除NO的实验研究.pdf

32 8 Vol.32 No.8 Mar.15, 2012 64 2012 3 15 Proceedings of the CSEE ©2012 Chin.Soc.for Elec.Eng. 0258-8013 (2012) 08-0064-07 O 643 A 470·10 NO (() 430074) Experimental Study of NO Removal by Modified Activated Carbon Fiber LIU Zihong, QIU Jianrong, TAN Zengqiang, ZENG Hancai, LIU Hao, HU Xin, ZHANG Manna (State Key Laboratory of Coal Combustion (Huazhong University of Science and Technology), Wuhan 430074, Hubei Province, China) ABSTRACT: Activated carbon fiber (ACF) has high specific surface area, good pore structure and narrow pore size ACF NO distribution. To increase the denitration efficiency, ACF was NO2NO modified with H O , KMnO /NaOH and NaClO/KOH. It is 0.030.1 KMnO4/NaOH 2 2 4 found that the specific surface area and pore volume decrease NO at different degrees, while the average pore diameter increases X after modification. X-ray photoelectron spectrometry (XPS) NO analysis indicates that all kinds of oxygenous groups on the 0 surface of the modified ACFs increase to a certain extent. The removal mechanism of NO by the modified ACFs includes the [1] (NO ) x early stage dominated by physical adsorption and the following NONO N ONO N O N O 2 2 3 2 3 2 4 stage dominated by chemical adsorption and oxidation. During [2] N2O5 NO the chemical adsorption, NO is oxidized into NO2 by the