借助热天平与红外光谱仪联用仪、X射线衍射仪、扫描电镜分析手段研究柠檬酸铅Pb3(C6H5O7)2·3H2O的热分解过程和产物。结果表明：柠檬酸铅Pb3(C6H5O7)2·3H2O的热分解过程分水分脱除、无水物分解和燃烧3个阶段；结晶水在无水物分解阶段散失，温度达到100~200℃时产生部分有机物，超过此温度时产物主要是CO2，最终产物为氧化铅与金属铅；柠檬酸铅在空气中分解受焙烧温度影响较为显著，柠檬酸铅前驱物Pb3(C6H5O7)2·3H2O低温焙烧时产物的主要成分是α-PbO、β-PbO与金属铅，高温焙烧时产物主要成分是β-PbO。
Thermal decomposition behavior and product were systematically investigated by TG-FTIR, XRD, SEM analysis. The results show that the thermal decomposition process of lead citrate is divided into dewatering, organic constituent decomposition and burning stages. The dehydrating crystal water occurs in the initial decomposition followed by the generation of intermediate organic matters at 100?200℃. Subsequently, the ultimate gas and solid products from this decomposition process are CO2 and a mixture mainly containing PbO and Pb, respectively. The major products of Pb3(C6H5O7)2?3H2O at relatively low temperature areα-PbO,β-PbO and Pb, whereas,β-PbO is the dominant product at relatively higher temperature.
参考文献
| [1] | Luiz C. Ferracin;Abel E. Chacon-Sanhueza;Rogerio A. Davoglio.Lead recovery from a typical Brazilian sludge of exhausted lead-acid batteries using an electrohydrometallurgical process[J].Hydrometallurgy,20022/3(2/3):137-144. |
| [2] | Z. Vaysgant;A. Morachevsky;A. Demidov;E. Klebanov.A low-temperature technique for recycling lead/acid battery scrap without wastes and with improved environmental control[J].Journal of Power Sources,19952(2):303-306. |
| [3] | Xinfeng Zhu;Lei Li;Xiaojuan Sun.Preparation of basic lead oxide from spent lead acid battery paste via chemical conversion[J].Hydrometallurgy,2012:24-31. |
| [4] | Lei Li;Xinfeng Zhu;Danni Yang;Linxia Gao;Jianwen Liu;R. Vasant Kumar;Jiakuan Yang.Preparation and characterization of nano-structured lead oxide from spent lead acid battery paste[J].Journal of hazardous materials,2012Feb.15(Feb.15):274-282. |
| [5] | Jianwen Liu;Danni Yang;Linxia Gao;Xinfeng Zhu;Lei Li;Jiakuan Yang.Effect of iron doped lead oxide on the performance of lead acid batteries[J].Journal of Power Sources,201120(20):8802-8808. |
| [6] | 朱新锋;杨家宽;杨丹妮;孙晓娟;郭一飞;陈松涛.从废铅膏制备超细碳酸铅的表征及热分解性能研究[J].功能材料,2012(17):2343-2346. |
| [7] | 朱新锋;杨家宽;胡雨辰;李磊;汪潇;张伟;孙晓娟;郭一飞;陈松涛.柠檬酸铅Pb（C6H6O7）·H2O热分解特性研究[J].材料热处理学报,2014(6):10-14. |
| [8] | 朱新锋;刘万超;杨海玉;李磊;杨家宽.以废铅酸电池铅膏制备超细氧化铅粉末[J].中国有色金属学报,2010(1):132-136. |
| [9] | Xinfeng Zhu;XiongHe;Jiakuan Yang;LinxiaGao;JianwenLiu$Danni Yang;Xiaojuan Sun;Wei Zhang;Qin Wang;R Vasant Kumar.Leaching of spent lead acid battery paste components by sodium citrate and acetic acid[J].Journal of hazardous materials,2013Apr.15(Apr.15):387-396. |
| [10] | Kourgiantakis M.;Raptopoulou CP.;Terzis A.;Salifoglou A.;Matzapetakis M..Lead-citrate chemistry. Synthesis, spectroscopic and structural studies of a novel lead(II)-citrate aqueous complex[J].Inorganica Chimica Acta,20001/2(1/2):134-138. |
| [11] | 石晶;徐家宁;张萍;范勇;王莉;毕明辉;马奎蓉;宋天佑.[Pb6（H2O）2（cit）4]·3H2O和Pb（tar）（H2O）2两种柔性酸和铅的配位聚合物的水热合成与表征[J].高等学校化学学报,2007(9):1617-1621. |
| [12] | M.S. Sonmez;R.V. Kumar.Leaching of waste battery paste components. Part 2: Leaching and desulphurisation of PbSO_4 by citric acid and sodium citrate solution[J].Hydrometallurgy,20091/2(1/2):82-86. |
| [13] | Bassilakis R.;Wojtowicz MA.;Carangelo RM..TG-FTIR analysis of biomass pyrolysis[J].Fuel,200112(12):1765-1786. |
| [14] | W. de Jong;A. Pirone;M.A. Wojtowicz.Pyrolysis of Miscanthus Giganteus and wood pellets: TG-FTIR analysis and reaction kinetics[J].Fuel,20039(9):1139-1147. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%