EDTA-柠檬酸法合成的SrCo0.8Fe0.2O3-δ钙钛矿的结构及制氧性能研究

沈秋婉; 郑瑛; 罗聪; 郑楚光

EDTA-柠檬酸法合成的SrCo_0.8Fe_0.2O_3-δ钙钛矿的结构及制氧性能研究

沈秋婉^1,2,
郑瑛^1,,
罗聪¹,
郑楚光¹

1.
华中科技大学煤燃烧国家重点实验室, 湖北武汉 430074;
2.
Department of Energy Sciences, Lund University, Lund SE-221 00, Sweden

基金项目: 国家自然科学基金 (51276078); 国家重点基础研究发展规划(973计划, 2011CB707301)。

详细信息

通讯作者:
郑瑛

中图分类号: TK91
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出版历程
- 收稿日期: 2014-11-27
- 修回日期: 2015-02-23
- 刊出日期: 2015-07-30

Oxygen production performance and structure of SrCo_0.8Fe_0.2O_3-δ synthesized by combined EDTA-citrate complexing process

1.
Huazhong University of Science and Technology, State Key Laboratory of Coal Combustion, Wuhan 430074, China;
2.
Department of Energy Sciences, Lund University, Lund SE-221 00, Sweden

摘要

摘要: 采用EDTA-柠檬酸联合络合法合成了钙钛矿型金属氧化物SrCo_0.8Fe_0.2O_3-δ(SCF182)粉体。通过XRD和ESEM研究了前驱体溶液不同的pH值对合成的SCF182粉体的晶体结构和微观形貌的影响。并采用固定床实验研究前驱体溶液pH值对SCF182的氧吸附/脱附性能的影响。结果表明,pH值对SCF182晶胞结构和参数影响不大,但影响SCF182的晶粒粒径和微观形貌,当pH值为8的弱碱性条件下时,能够合成蓬松多孔网状纳米结构的钙钛矿粉体。固定床实验显示,前驱体溶液的pH值影响合成的粉体SCF182的氧吸附速率;且SCF182的氧脱附性能随pH值的增大先升高后降低,pH值为8时氧脱附量达到峰值为42.2 mg/g。
- 钙钛矿载氧体 /
- SrCo_0.8Fe_0.2O_3-δ /
- pH值 /
- EDTA-柠檬酸联合络合 /
- 氧吸附/脱附
Abstract: Perovskite-type metal oxides SrCo_0.8Fe_0.2O_3-δ(SCF182) powder was synthesized by combined EDTA-citrate complexing process. The effects of the pH value of precursor solution on the crystal structure and morphology of synthesized SCF182 powder were investigated by X-ray diffraction and environmental scanning electron microscopy. Fixed-bed experiments were conducted to study the oxygen adsorption/desorption performance of SCF182. The results show that the pH values do not affect the forming of main crystal phase of SCF182 but affect the grain size and microstructure. The net-like porous structure is formed in the system when the pH value of the precursor is 8.The fixed-bed experimental results indicate that the pH value of precursor solution has effects on the oxygen adsorption reaction rate of SCF182. Furthermore, the maximum oxygen desorption amount of SCF182, 42.2 mg/g, can be obtained when the pH value is 8.
- perovskite-type oxygen carrier /
- SrCo_0.8Fe_0.2O_3-δ /
- pH value /
- combined EDTA-citrate complexing /
- oxygen adsorption/desorption

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参考文献(15)

杨伟进, 赵海波, 梅道锋, 郑楚光. Cu 修饰的 Fe₂O₃/Al₂O₃ 氧载体的循环反应稳定性研究[J]. 燃料化学学报, 2014, 42(1): 121-128. (YANG Wei-jin, ZHAO Hai-bo, MEI Dao-feng, ZHENG Chu-guang.Reactivity and stability of Cu-decorated Fe₂O₃/Al₂O₃ oxygen carrier for chemical looping combustion[J].J Fuel Chem Technol, 2014, 42(1): 121-128.)

丁宁, 郑瑛, 罗聪, 吴琪珑, 傅培舫, 郑楚光. 化学链燃烧中 CaSO₄ 复合载氧体的实验研究[J]. 燃料化学学报, 2011, 39(3): 161-168. (DING Ning, ZHENG Ying, LUO Cong, WU Qi-long, FU Pei-fang, ZHENG Chu-guang. Investigation into compound CaSO₄ oxygen carrier for chemical-looping combustion[J]. J Fuel Chem Technol, 2011, 39(3): 161-168.)

罗聪, 郑瑛, 丁宁, 吴琪珑, 郑楚光. 纳米复合钙基高温CO₂ 吸收剂的合成与性能[J]. 中国电机工程学报, 2011, 31(8): 45-50. (LUO Cong, ZHENG Ying, DING Ning, WU Qi-long, ZHENG Chu-guang. Synthesis and performance of a nano synthetic Ca-based sorbent for high temperature CO₂ capture[J]. Proc CSEE, 2011, 31(8): 45-50.)

吴黎明, 潘卫国, 郭瑞堂. 富氧燃烧技术的研究进展与分析[J]. 锅炉技术, 2011, 42(1): 36-39. (WU Li-ming, PAN Wei-guo, GUO Rui-tang. The research and analysis of oxygen combustion technology[J]. Boiler Technol, 2011, 42(1): 36-39.)

YANG Q, LIN Y S, BULOW M. High temperature sorption separation of air for producing oxygen-enriched carbon dioxide stream[J]. AIChE J, 2006, 52: 574-581.

YANG Q, LIN Y S. Fixed-bed performance for production of oxygen-enriched carbon dioxide stream by perovskite-type ceramic sorbent[J]. Sep Purif Technol, 2006, 49(1): 27-35.

YANG Q, LIN Y S. Improved sorbent for high-temperature production of oxygen-enriched carbon dioxide stream[J]. Ind Eng Chem Res, 2007, 46(18): 6025-6031.

KUSABA H, SAKAI G, SHIMANOE K, MIURA N. Oxygen-sorptive and desorptive properties of perovskites related oxides under temperature swing condition for oxygen enrichment[J]. Solid State Ionics, 2002, 152-153: 689-694.

KUSABA H, SAKAI G, SHIMANOE K, MIURA N, YAMAZOE N. Temperature swing based oxygen enrichment by using perovskites-type oxide[J]. J Mater Sci Lett, 2002, 21(5): 407-409.

张腾, 李振山, 蔡宁生. 利用钙钛矿型金属氧化物制取O₂/CO₂的实验研究[J]. 工程热物理学报, 2008, 29(9): 1591-1594. (ZHANG Teng, LI Zhen-shan, CAI Ning-sheng. Experimental study of O₂-CO₂ mixed stream production based on perovskite[J]. J Eng Thermophys, 2008, 29(9): 1591-1594.)

郑瑛, 边关, 罗聪, 吴琪珑, 郑楚光. 钙钛矿型复合载氧体的制备及释氧性能研究[J]. 中国电机工程学报, 2011, 31(35): 90-96. (ZHENG Ying, BIAN Guan, LUO Cong, WU Qi-long, ZHENG Chu-guang. Investigation on the preparation and oxygen desorption ability of different perovskite-type sorbents[J]. Proc CSEE, 2011, 31(35): 90-96.)

SHEN Q W, ZHENG Y, LUO C, ZHENG C G. Characteristics of SrCo₁_-xFe_xO_3-_δ perovskite powders with improved O₂/CO₂ production performance for oxyfuel combustion[J]. Bull Korean Chem Soc, 2014, 35(6): 1613-1616.

沈秋婉, 郑瑛, 马飞艳, 丁宁, 郑楚光. 钙钛矿氧载体SrCo_0.8Fe_0.2O_3-δ制氧性能的实验研究[J]. 工程热物理学报, 2014, 35(1): 192-195. (SHEN Qiu-wan, ZHENG Ying, MA Fei-yan, DING Ning, ZHENG Chu-guang. Experimental study of SrCo_0.8Fe_0.2O_3-_δperovskite-type for oxygen production[J]. J Eng Thermophys, 2014, 35(1): 192-195.)

王艳. 钙钛矿型氧化物的制备方法及应用[J]. 天津化工, 2008, 22(3): 39-42. (WANG Yan. The perovskite oxide preparation methods and applications[J]. Tianjin J Chem Eng, 2008, 22(3): 39-42.)

乔梁, 徐天添, 郑精武, 蔡伟, 姜力强. pH值对溶胶凝胶法制备La_0.65Sr_0.35MnO₃的影响[J]. 稀有金属材料与工程, 2010, 39(2): 343-346. (QIAO Liang, XU Tian-tian, ZHENG Jing-wu, CAI Wei, JIANG Li-qiang. Effects of pH value on preparation of La_0.65Sr_0.35MnO₃by sol-gel process[J]. Rare Metal Mater Eng, 2010, 39(2): 343-346.)

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