Zhang Lei, Wen Xin, Zhang Lei, Sha Xiangling, Wang Yusu, Chen Jihao, Luo Min, Li Yonghui
School of Geology and Environment, Xi'an University of Science and Technology, Xi'an 710054, China.
China National Heavy Machinery Research Institute Co., Ltd., Xi'an 710032, China.
Materials (Basel). 2018 Jun 20;11(6):1047. doi: 10.3390/ma11061047.
Fly ash and bentonite were mixed in a certain proportion as raw materials to prepare a denitration catalyst. In previous studies, it has been concluded that fly ash-type catalysts can provide significant catalytic activity for denitrification after being modified with oxygen. In this study, the effect of plasma conditions on the denitration performance of the catalyst was investigated from the aspects of plasma modification power, modification time, and the flow rate of the gas. Boehm titration and infrared analysis systems were used to characterize the performance of the catalyst. The experimental results show that the optimal modification power is 60 W, the optimal modification time is 20 min, and the optimal gas flow rate is 40 mL/min.
将粉煤灰和膨润土按一定比例混合作为原料制备脱硝催化剂。在以往的研究中，已经得出结论，粉煤灰型催化剂经氧气改性后可对脱硝提供显著的催化活性。在本研究中，从等离子体改性功率、改性时间和气体流速等方面研究了等离子体条件对催化剂脱硝性能的影响。采用 Boehm 滴定法和红外分析系统对催化剂的性能进行了表征。实验结果表明，最佳改性功率为 60 W，最佳改性时间为 20 min，最佳气体流速为 40 mL/min。
