| Study on Sulfation of CeO2/γ-Al2O3 Sorbent in Simulated Flue Gas |
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| 引用本文： | 郁青春,张世超,王新东,张杰,卢振明.Study on Sulfation of CeO2/γ-Al2O3 Sorbent in Simulated Flue Gas[J].中国稀土学报(英文版),2007,25(2):184-188. |
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| 作者姓名： | 郁青春 张世超 王新东 张杰 卢振明 |
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| 作者单位： | Department of Physical Chemistry University of Science and Technology Beijing，School of Material Science and Engineering Beijing University of Aeronautics and Astronautics，Department of Physical Chemistry University of Science and Technology Beijing，Institute of Nuclear and Energy Technology Tsinghua University，Institute of Nuclear and Energy Technology Tsinghua University，Beijing 100083 China，Beijing 100083 China Beijing 100083 China，Beijing 102201 China，Beijing 102201 China |
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| 基金项目： | Project supported by the National Natural Science Foundation of China （90210003） and Natural Science Foundation of Beijing City （2012010） |
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| 摘 要： | It is well known that sulfur dioxide(SO2) , morethan50%of which arise fromcombustion of fossil fu-els ,are precursors of acidrain andtheir emission pos-es a global threat tothe atmosphere .Environmental a-gencies have ,therefore ,regulated emissions of SO…
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| 关 键 词： | 模拟烟道气 CeO2/γ-Al2O3 吸附剂 硫酸盐化作用 |
| 文章编号： | 1002-0721（2007）02-0184-05 |
| 收稿时间： | 2006-09-30 |
| 修稿时间： | 2006-10-30 |
Study on Sulfation of CeO2/γ-Al2O3 Sorbent in Simulated Flue Gas |
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| Qingchun , Shichao Zhang, Xindong Wang, Jie Zhang,Zhenming Lu.Study on Sulfation of CeO2/γ-Al2O3 Sorbent in Simulated Flue Gas[J].Journal of Rare Earths,2007,25(2):184-188. |
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| Authors: | Qingchun Shichao Zhang Xindong Wang Jie Zhang Zhenming Lu |
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| Affiliation: | aDepartment of Physical Chemistry, University of Science and Technology Beijing, Beijing 100083, China;bSchool of Material Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100083, China;cInstitute of Nuclear and Energy Technology, Tsinghua University, Beijing 102201, China |
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| Abstract: | The sulfation of CeO2/γ-Al2O3 sorbent in simulated flue gas was studied. A series of CeO2/γ-Al2O3 sorbents with different CeO2 loadings were prepared by impregnation and characterized by X-ray diffraction. Thermogravimetric technique was used to study the sulfation of CeO2/γ-Al2O3 sorbents, mainly on the CeO2 loading, sulfation cycles, and intrinsic kinetics. The study revealed that monolayer coverage of CeO2 supported on γ-Al2O3 was 0.125 g CeO2/g (γ-Al2O3). Below monolayer coverage, CeO2 was highly dispersed on γ-Al2O3. The optimal CeO2 loading on sulfation was 0.03 g CeO2/g (γ-Al2O3). CeO2/γ-Al2O3 sorbent was recyclable by controlling sulfation time. Intrinsic kineticd equation was R = 1.1394 × 10−4 × exp (−1,508.39/T) mg·mg−1·s−1. Activation energy and reaction order were 12.54 kJ·mol−1 and first order, respectively. |
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| Keywords: | CeO2/γ -Al2O3 SO2 intrinsic kinetics recyclable rare earths |
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