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| 焙烧水滑石去除氯离子性能研究 | |
| 引用本文： | 任志峰,何静,张春起,段雪.焙烧水滑石去除氯离子性能研究[J].精细化工,2002,19(6):339-342. |
| 作者姓名： | 任志峰 何静 张春起 段雪 |
| 作者单位： | 1. 北京化工大学,可控化学反应科学与技术基础教育部重点实验室,北京,100029;北京燕山石油化工公司,研究院,北京,102500 2. 北京化工大学,可控化学反应科学与技术基础教育部重点实验室,北京,100029 3. 北京燕山石油化工公司,研究院,北京,102500 |
| 摘 要： | 利用水滑石 (LDH)焙烧后在一定条件下可重新吸收水和阴离子从而部分恢复层状结构的结构记忆效应 ,研究了 3种工业级LDH不同温度下的焙烧产物即焙烧水滑石 (CLDH)去除Cl-的行为。射线粉末衍射仪表征了它们的结构特征。CLDH对氯离子的去除实验表明 ,n(Mg)∶n(Al)比值为 3和 4的LDH在 5 0 0～ 6 0 0℃下焙烧的CLDH对氯离子的去除率达到 95 %以上 ,1gCLDH去除氯离子的最大量约 5 9 6mg。 |
| 关 键 词： | LDH 氯离子 结构记忆效应 |
| 文章编号： | 1003-5214(2002)06-0339-04 |
Removal of Chloride Anion by Calcined Layered Double Hydroxides |
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| REN Zhi feng ,HE Jing ,ZHANG Chun qi ,DUAN Xue.Removal of Chloride Anion by Calcined Layered Double Hydroxides[J].Fine Chemicals,2002,19(6):339-342. | |
| Authors: | REN Zhi feng HE Jing ZHANG Chun qi DUAN Xue |
| Affiliation: | REN Zhi feng 1,2,HE Jing 1,ZHANG Chun qi 2,DUAN Xue 1 |
| Abstract: | The calcined products of carbonate containing layered double hydroxides (LDH) are shown to reconstitute their original layered structure after adsorption of various anions.In the light of this so-called "memory effect", the removal of Cl - was studied using the calcined products of three commercial LDH.Their crystalline structures were characterized by X ray powder diffraction. The products of Mg/Al LDH with molar ratio 3 and 4 calcined at 500-600 ℃ were shown to have the highest degree of removal, and the maximum removal of Cl - was about 59 6 mg using 1 g calcined products. |
| Keywords: | layered double hydroxides (LDH) chloride ion memory effect |
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