Effects of Surface Features on Sulfur Dioxide Adsorption on Calcined NiAl Hydrotalcite-like Compounds

被引：53
作者：
Zhao, Ling [1 ,2 ]
Li, Xinyong [1 ,2 ,3 ]
Quan, Xie [1 ,2 ]
Chen, Guohua [3 ]
机构：
[1] Dalian Univ Technol, Sch Environm Sci & Technol, Key Lab Ind Ecol & Environm Engn MOE, Dalian 116024, Peoples R China
[2] Dalian Univ Technol, Sch Environm Sci & Technol, State Key Lab Fine Chem, Dalian 116024, Peoples R China
[3] Hong Kong Univ Sci & Technol, Dept Chem & Biomol Engn, Kowloon, Hong Kong, Peoples R China
来源：
ENVIRONMENTAL SCIENCE & TECHNOLOGY | 2011年 / 45卷 / 12期
基金：
国家高技术研究发展计划(863计划);
关键词：
ACTIVATED CARBON; SIMULTANEOUS REMOVAL; MIXED OXIDES; FLUE-GAS; CHEMICAL-COMPOSITION; CATALYTIC REMOVAL; SO2; SPECTROSCOPY; MG; REDUCTION;
D O I：
10.1021/es200784e
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
The hydrotalcite-based NiAl mixed oxides were synthesized by coprecipitation and urea hydrolysis approaches and employed for SO(2) removal. The samples were well characterized by inductively coupled plasma (ICP) elemental analysis, X-ray diffraction (XRD), scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), and N(2) adsorption/desorption isotherm analyses. The acid-base properties were characterized by pyridine chemisorption and CO(2) temperature-programmed desorption (TPD). The calcined NiAlO from the urea method showed excellent SO(2) adsorption and its adsorption equilibrium showed a type I isotherm, which significantly improved the adsorption performance for low-concentration SO(2). Both the physical structure and the acidic-basic sites were found to play important roles in the SO(2) adsorption process. In situ Fourier transform infrared spectroscopy (FTIR) investigation revealed that adsorbed SO(2) molecules formed surface bisulfite, sulfite, and bidentate binuclear sulfate. The mechanisms for SO(2) adsorption and transformation are discussed in detail.
引用
收藏
页码：5373 / 5379
页数：7
相关论文
共 39 条
[1]   Thermal decomposition of precipitated low bulk density basic aluminium sulfate [J].
Bhattacharya, IN ;
Gochhayat, PK ;
Mukherjee, PS ;
Paul, S ;
Mitra, PK .
MATERIALS CHEMISTRY AND PHYSICS, 2004, 88 (01) :32-40
[2]   The surface acidity of solid oxides and its characterization by IR spectroscopic methods. An attempt at systematization [J].
Busca, G .
PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 1999, 1 (05) :723-736
[3]   SOx removal by calcined MgAIFe hydrotalcite-like materials:: Effect of the chemical composition and the cerium incorporation method [J].
Cantú, M ;
López-Salinas, E ;
Valente, JS .
ENVIRONMENTAL SCIENCE & TECHNOLOGY, 2005, 39 (24) :9715-9720
[4]   Behaviour of SOx-traps derived from ternary Cu/Mg/Al hydrotalcite materials [J].
Centi, Gabriele ;
Perathoner, Siglinda .
CATALYSIS TODAY, 2007, 127 (1-4) :219-229
[5]   Evaluation of crystalline structure and SO2 removal capacity of a series of MgAlFeCu mixed oxides as sulfur transfer catalysts [J].
Cheng, Wen Ping ;
Yang, Jian Guo ;
He, Ming Yuan .
CATALYSIS COMMUNICATIONS, 2009, 10 (06) :784-787
[6]  
Dalla Lana I. G., 1993, J PHYS CHEM-US, V97, P8005
[7]   Sulfate formation on SOx trapping materials studied by cu and SK-edge XAFS [J].
Dathe, H ;
Jentys, A ;
Lercher, JA .
PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 2005, 7 (06) :1283-1292
[8]   XPS comparative study of ceria/zirconia mixed oxides: powders and thin film characterisation [J].
Galtayries, A ;
Sporken, R ;
Riga, J ;
Blanchard, G ;
Caudano, R .
JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA, 1998, 88 :951-956
[9]   CA(OH)2/FLY ASH SORBENTS FOR SO2 REMOVAL [J].
HO, CS ;
SHIH, SM .
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 1992, 31 (04) :1130-1135
[10]   Novel Process of Simultaneous Removal of SO2 and NO2 by Sodium Humate Solution [J].
Hu, Guoxin ;
Sun, Zhiguo ;
Gao, Hanyang .
ENVIRONMENTAL SCIENCE & TECHNOLOGY, 2010, 44 (17) :6712-6717
1234