硫酸铝铵-氯化氢反应制备六水氯化铝过程中晶体形貌的研究
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摘要
以十二水合硫酸铝铵为原料,采用氯化氢通气结晶法制备了六水氯化铝晶体,考察了通气速率、通气时间、反应温度、铝离子初始浓度对六水氯化铝晶体形貌的影响。结果表明,50 m L硫酸铝铵酸溶液中,当通气速率为60 mL/min、通气时间为2 h、反应温度为30℃、铝离子初始质量浓度为20 g/L时,可以得到形貌比较规整的棱柱形六水氯化铝晶体。该研究为提取、制备高品质六水氯化铝晶体提供了技术参考。
AlCl_3·6H_2O crystal was prepared from solution of ammonium aluminum sulfate using HCl gas sparging with ammonium aluminum sulfate dodecahydrate as raw material.The effects of sparging rate,sparging time of HCl gas,reaction temperature and initial concentration of Al~(3+) on the morphology of AlCl_3·6H_2O crystal were investigated.Results showed that when the sparging rate was 60 mL/min,the sparging time was 2 h and the initial mass concentration of Al~(3+)was 20 g/L in 50 mL ammonium sulfate aqueous solution, AlCl_3·6H_2O products with good shape could be obtained at 30 ℃ reaction temperature.It provided a technical reference for the extraction and preparation of high quality aluminum chloride hexahydrate crystals.
AlCl_3·6H_2O crystal was prepared from solution of ammonium aluminum sulfate using HCl gas sparging with ammonium aluminum sulfate dodecahydrate as raw material.The effects of sparging rate,sparging time of HCl gas,reaction temperature and initial concentration of Al~(3+) on the morphology of AlCl_3·6H_2O crystal were investigated.Results showed that when the sparging rate was 60 mL/min,the sparging time was 2 h and the initial mass concentration of Al~(3+)was 20 g/L in 50 mL ammonium sulfate aqueous solution, AlCl_3·6H_2O products with good shape could be obtained at 30 ℃ reaction temperature.It provided a technical reference for the extraction and preparation of high quality aluminum chloride hexahydrate crystals.
引文
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[2]年志高,李剑萍.三氯化铝应用性能探讨[J].无机盐工业,1985,17(4):40-42.
[3]Guo Y,Lv H,Yang X,et al.AlCl3·6H2O recovery from the acid leaching liquor of coal gangue by using concentrated hydrochloric inpouring[J].Separation&Purification Technology,2015,151:177-183.
[4]魏存弟,杨殿范,张东丽,等.循环流化床粉煤灰制备结晶氯化铝的方法:中国,101054192A[P].2007-10-17.
[5]郭昭华,王永旺,张小东,等.一种制备高纯结晶氯化铝的方法:中国,103979590A[P].2014-08-13.
[6]Maysilles J H,Traut D E,Sawyer D L.Aluminum chloride hexahydrate crystallization by HCl gas sparging[M].US:Bureau of Mine,1982.
[7]刘立新,杜卫民,朱晓燕,等.MoO3纳米材料的形貌控制合成及其可见光催化性能研究[J].化工新型材料,2015(6):184-187.
[8]王丽丽,李嘉荣,唐定中.矿化剂氧化铝的形貌对二氧化硅基陶瓷型芯性能的影响[J].航空材料学报,2015,35(1):8-12.
[9]徐涛,兰海平,杨超,等.粉磨酸浸-氯化氢通气结晶法提取粉煤灰中氧化铝[J].无机盐工业,2018,50(1):57-61.
[10]Wang P,Li C,Gong H,et al.Morphology control and growth mechanism of magnesium hydroxide nanoparticles via a simple wet precipitation method[J].Ceramics International,2011,37(8):3365-3370.
[11]Chojjati H,Rohani S.Cooling and seeding effect on supersaturation and final crystal size distribution(CSD)of ammonium sulphate in a batch crystallizer[J].Chemical Engineering&Processing Process Intensification,2005,44(9):949-957.
[12]徐阳,孙志丹,陈晓浪,等.结晶温度对左旋聚乳酸的晶体改性和晶体形貌的影响[J].功能材料,2012,43(16):2138-2141.
[13]王锦华,杨新亚,王守兴,等.Na4Ca(SO4)3复盐高温合成及温度对晶体形貌的影响[J].无机化学学报,2007,23(5):791-794.
[14]闫平科,田海山,高玉娟,等.反应物浓度对三水碳酸镁晶体生长形貌的影响研究[J].硅酸盐通报,2013,32(12):2568-2571.
[15]张建华,曹付明,张宏建,等.初始过饱和度对谷氨酸结晶的影响研究[J].高校化学工程学报,2013(1):43-49.