Superior Storage Performance for NO in Modified Natural Mordenite

作者：Wang Hui; Yu Qinqin; Xiao Liping; Liu Tong; Yu Wanjin; Jiang Xiaoyuan; Zhang Xuming; Zheng Xiaoming^*

来源：Chinese Journal of Chemistry, 2012, 30(7): 1511-1516.

DOI：10.1002/cjoc.201200102

• natural mordenite
• NOx adsorption
• flue gas
• NOx removal

Natural mordenite (NMOR), modified by acid treatment and ion-exchange, was employed for NO adsorption in the present study. The NO storage capacity of modified NMOR was greatly improved compared with its original correspondents, mainly due to the preservation of crystalline structure and the improvement of surface area of NMOR. Among all the modified NMOR, Ni-NMOR exhibited the highest adsorption capacity for NO (1.20 mmol center dot g-1) in the presence of 10% O2 at 308 K. The influence of the main ingredients in flue gas on the storage capacity of NMOR for NO had also been investigated. In general, H2O, CO2 and SO2 all displayed negative impact on NO adsorption due to their competitive adsorption on the surface of NMOR with NO, while the presence of O2 greatly improved the adsorption of NO because of the formation of NO2 and N2O3. Moreover, Ni-NMOR exhibited high efficiency for NOx removal through the NOx adsorption-plasma discharge process.

• 出版日期2012-7
• 单位浙江大学