Novel Co-Mg-Al-Ti-O catalyst derived from hydrotalcite-like compound for NO storage/decomposition

被引:11
作者
Cheng, Jie [1 ]
Wang, Xiaoping [1 ]
Ma, Chunyan [1 ]
Hao, Zhengping [1 ]
机构
[1] Chinese Acad Sci, Ecoenvironm Sci Res Ctr, Beijing 100085, Peoples R China
基金
中国国家自然科学基金;
关键词
NO decomposition; storage; hydrotalcite-like compounds; STORAGE CATALYST; MIXED-OXIDE; DECOMPOSITION; REDUCTION; ADSORPTION; OXYGEN; STEPS;
D O I
10.1016/S1001-0742(11)60796-1
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Catalysts of Co1.5Mg1.5/Al0.9Ti0.1O and Co1.5Mg1.5/AlO were successfully prepared by calcinations of corresponding hydrotalcite-like compounds at 800 degrees C for 4 hr. The derived oxides were of spinel phase and a small quantity of Ti substitution did not change the crystal purity. Their catalytic performance for the NO storage/decomposition was investigated. Ti incorporation enhanced the NO decomposition activity while has an opposite effect on the storage capacity of catalyst. In situ FT-IR spectra of the catalysts showed that the final adsorption species on the catalysts was coordinated nitrates/nitrites. In addition, NO storage/decomposition mechanism has been discussed on the basis of these observations.
引用
收藏
页码:488 / 493
页数:6
相关论文
共 28 条
[1]  
[Anonymous], 2013, HLTH ENV COMM RISKS
[2]  
Braterman P.S., 2004, Handbook of layered materials, Ed, P373
[3]   HYDROTALCITE-TYPE ANIONIC CLAYS: PREPARATION, PROPERTIES AND APPLICATIONS [J].
Cavani, F. ;
Trifiro, F. ;
Vaccari, A. .
CATALYSIS TODAY, 1991, 11 (02) :173-301
[4]   Sulfur-Resistant NO Decomposition Catalysts Derived from Co-Ca/Ti-Al Hydrotalcite-like Compounds [J].
Cheng, Jie ;
Wang, Xiaoping ;
Yu, Junjie ;
Hao, Zhengping ;
Xu, Zhi Ping .
JOURNAL OF PHYSICAL CHEMISTRY C, 2011, 115 (14) :6651-6660
[5]  
Cotton F A, 1999, ADV INORG CHEM, P326
[6]  
Deeck J, 2006, APPL CATAL A-GEN, V307, P156
[7]   Mechanism of NOx decomposition [J].
Garin, F .
APPLIED CATALYSIS A-GENERAL, 2001, 222 (1-2) :183-219
[8]   Direct Decomposition of NO on Ba/Ba-Y-O Catalyst [J].
Goto, Kazuya ;
Matsumoto, Hiroshige ;
Ishihara, Tatsumi .
TOPICS IN CATALYSIS, 2009, 52 (13-20) :1776-1780
[9]   Direct Decomposition of NO on Ba Catalysts Supported on Ce-Fe Mixed Oxides [J].
Hong, Won-Jong ;
Iwamoto, Shinji ;
Inoue, Masashi .
CATALYSIS LETTERS, 2010, 135 (3-4) :190-196
[10]   A highly sulfur resistant Pt-Rh/TiO2/Al2O3 storage catalyst for NOx reduction under lean-rich cycles [J].
Huang, HY ;
Long, RQ ;
Yang, RT .
APPLIED CATALYSIS B-ENVIRONMENTAL, 2001, 33 (02) :127-136