Influence of metal cations on catalytic oxidation of NO over high-silica zeolites
ZHOU Fei-xiang, WANG Jun, QIAN Ding-li, WU Xiang-hao, LIU Hua-yan, LU Han-feng
State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China
A series of HZSM-5、Na-、K-、Co-、NiZSM-5catalysts were prepared by ion exchanged method and characterized by XRD、BET、ICP-MS and Py-IR. Their catalytic activities were investigated in the catalytic oxidation of NO. Results showed that the CoZSM-5possessed moderate surface acidity and was the most beneficial for NO oxidation, then performed highest activity to 47%. Meanwhile, the influences of space velocity, O2 concentration (5%~20%) and SO2 concentration (0~200×10-6) were investigated, under 600×10-6 inlet NO concentration and 100% RH. Experimental results revealed that SO2 concentration (below 200×10-6) had little impact on NO oxidation reaction and the NO oxidation conversion was maintained at 40% in 56h lifetime test, under 30℃、600ppm NO、18000h-1 SV and 100% RH.
周飞翔, 汪俊, 钱定利, 吴相浩, 刘华彦, 卢晗锋. 金属阳离子对高硅分子筛催化氧化NO的影响[J]. 中国环境科学, 2018, 38(4): 1287-1294.
ZHOU Fei-xiang, WANG Jun, QIAN Ding-li, WU Xiang-hao, LIU Hua-yan, LU Han-feng. Influence of metal cations on catalytic oxidation of NO over high-silica zeolites. CHINA ENVIRONMENTAL SCIENCECE, 2018, 38(4): 1287-1294.
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