硅酸盐通报2017，Vol.36Issue(3)：833-838,6.
以煤矸石为铝源制备镁铝层状双金属氢氧化物
Preparation of Mgnesia-Alumina Double-layered Metal Hydroxides with Coal Gangue as Aluminum Source
摘要
Abstract
Obtained from coal gangue as raw matcrials of boehmite was through mechanical activation, thermal activation and acid extraction.Mg-Al layered double metal hydroxides(LDHs) was produced by co-precipitation method.The products were characterized by XRD,IR and scanning electron microscopy (SEM) measurements.Experimental results show that: Coal gangue is activated at the calcination temperature of 700 ℃, leaching temperature is 100 ℃, extraction time is 150 min,the quality ratio between solvent and sample is 2∶10,the concentration of sulfuric acid is 4 mol/L,the ratio between liquid and solid is 15∶1,the extraction rate of Al2O3 is 0.937.When the molar ratio of Mg and Al is 2∶1,pH is 10 and the reaction temperature is 60 ℃,Mg-Al layered double hydroxides with interlamellar spacing d(003) of 0.798 nm are prepared by co-precipitation method.关键词
煤矸石/一水软铝石/层状双金属氢氧化物/共沉淀法Key words
coal gangue/boehmite/layered double metal hydroxides(LDHs)/co-precipitation分类
矿业与冶金引用本文复制引用
秦华,马晓燕,徐岩,付佳琳..以煤矸石为铝源制备镁铝层状双金属氢氧化物[J].硅酸盐通报,2017,36(3):833-838,6.基金项目
黑龙江省教育厅科学技术研究项目(12521463) （12521463）
