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Superior Storage Performance for NO in Modified Natural Mordenite
Author(s) -
Wang Hui,
Yu Qinqin,
Xiao Liping,
Liu Tong,
Yu Wanjin,
Jiang Xiaoyuan,
Zhang Xuming,
Zheng Xiaoming
Publication year - 2012
Publication title -
chinese journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.28
H-Index - 41
eISSN - 1614-7065
pISSN - 1001-604X
DOI - 10.1002/cjoc.201200102
Subject(s) - chemistry , adsorption , mordenite , ion exchange , chromatography , chemical engineering , organic chemistry , ion , zeolite , catalysis , engineering
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·g −1 ) in the presence of 10% O 2 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, H 2 O, CO 2 and SO 2 all displayed negative impact on NO adsorption due to their competitive adsorption on the surface of NMOR with NO, while the presence of O 2 greatly improved the adsorption of NO because of the formation of NO 2 and N 2 O 3 . Moreover, Ni‐NMOR exhibited high efficiency for NO x removal through the NO x adsorption‐plasma discharge process.