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

来源：

JOURNAL OF ENVIRONMENTAL SCIENCES | 2012年 / 24卷 / 03期

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

页码：488 / 493

页数：6

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

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