| 喷雾热解法制备氢氧化镧 |
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| 引用本文： | 边雪,王振峰,王金玉,吴文远.喷雾热解法制备氢氧化镧[J].东北大学学报(自然科学版),2015,36(7):966-969. |
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| 作者姓名： | 边雪 王振峰 王金玉 吴文远 |
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| 作者单位： | (东北大学 材料与冶金学院， 辽宁 沈阳110819) |
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| 基金项目： | 国家科技支撑计划项目(2012BAE01B02)； 国家自然科学基金资助项目(51274060). |
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| 摘 要： | 以H2O2为助剂,对氯化镧溶液通过喷雾热解法制备氢氧化镧的工艺进行了研究,首先通过热力学分析获得了H2O2与氯化镧反应的起始温度为288℃,并进一步研究了热解温度、氯化镧溶液质量浓度、H2O2添加量及载气压力对氢氧化镧转化率的影响.通过氯含量测定,XRD及SEM分析,获得了优化的工艺条件为:热解温度600℃,氯化镧溶液质量浓度400 g/L,H2O2加入量5%,载气压力0.4 MPa,在此条件下得到了转化率为99.96%的碎片状La(OH)3.
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| 关 键 词： | 氯化镧 喷雾焙烧 H2O2 氢氧化镧 热力学 |
Preparation of Lanthanum Hydroxide by Spray Pyrolysis of Lanthanum Chloride |
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| BIAN Xue,WANG Zhen-feng,WANG Jin-yu,WU Wen-yuan.Preparation of Lanthanum Hydroxide by Spray Pyrolysis of Lanthanum Chloride[J].Journal of Northeastern University(Natural Science),2015,36(7):966-969. |
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| Authors: | BIAN Xue WANG Zhen-feng WANG Jin-yu WU Wen-yuan |
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| Institution: | School of Materials & Metallurgy， Northeastern University， Shenyang 110819， China. |
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| Abstract: | Using H2O2 as auxiliary reagent， the preparation of lanthanum hydroxide by spray pyrolysis of lanthanum chloride was studied. The thermodynamic principle was used to calculate the starting temperature of lanthanum chloride reaction with H2O2， and it is 288℃. The effect of pyrolysis temperature，LaCl3 solution concentration， H2O2 addition and carrier gas pressure on the conversion ratio of La(OH)3 was experimentally studied. The Cl concent analysis， XRD and SEM indicate that the optimum conditions for the pyrolysis are temperature of 600℃， LaCl3 solution concentration of 400g/L， H2O2 addition of 5% and carrier gas pressure of 0.4MPa， resulting in the conversion of 99.96% with debris shape La(OH)3. |
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| Keywords: | lanthanum chloride spray pyrolysis H2O2 lanthanum hydroxide thermodynamics |
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