Ca-Mg-Al-Fe层状金属氢氧化物材料的制备及应用  

Preparation and Application of Ca-Mg-Al-Fe Layered Metal Hydroxides Materials

作　　者：马安瑞 马向荣[2] 闫龙 郭延红[1] 付峰[1] Ma Anrui;Ma Xiangrong;Yan Long;Guo Yanhong;Fu Feng(College of Chemistry and Chemical Engineering,Yan'an University,Yan'an,Shaanxi 716000;College of Chemistry and Chemical Engineer­ing,Yulin University,Yulin,Shaanxi 719000)

机构地区：[1]延安大学化学与化工学院,陕西延安716000 [2]榆林学院化学与化工学院,陕西榆林719000

出　　处：《非金属矿》2022年第6期34-38,43,共6页Non-Metallic Mines

基　　金：国家自然科学基金(22168043);陕西省重点科技创新团队项目(2020TD-031);陕西省科技厅重点研发计划项目(2021GY-165);陕西省教育厅产业化项目(20JC039);陕西省教育厅科研计划项目(21JP148);陕西省科技资源开放共享平台项目(2019PT-18)。

摘　　要：以镁渣酸浸液为原料,采用共沉淀法制备Ca-Mg-Al-Fe层状金属氢氧化物(LDHs),探究pH值、晶化温度和时间对制备Ca-Mg-Al-Fe层状金属氢氧化物及其吸附性能的影响。结果表明,pH值为11.9,晶化温度和时间分别为150℃和16 h时,制得试样结晶度较高,且具有层状金属氢氧化物的特定结构。LDHs试样用量为0.02 g,对100 mL 100 mg/L甲基橙溶液的吸附量为268.815 mg/g。本研究拓展了层状金属氢氧化物在有机染料废水处理领域的应用价值,为镁渣的综合利用奠定了基础。In this paper,Ca-Mg-Al-Fe layered double hydroxides was prepared by co-precipitation method employing acid leaching solution using magnesium slag as raw materials,the influences of pH value,crystallization temperature and time on the preparation and the adsorption properties were explored.The results show that when the pH value is 11.9,the crystallization temperature is 150℃and the crystallization time is 16 h,the product has high crystallinity and a typical layered double hydroxides structure.Use 0.02 g Ca-Mg-Al-Fe layered double hydroxides to adsorb 100 mL 100 mg/L methyl orange solution,the adsorption capacity can reach 268.815 mg/g.The research extends the application value of layered double hydroxides in the field of organic dye wastewater treatment,and also lays a foundation for the comprehensive utilization of magnesium slag.

关 键 词：镁渣 Ca-Mg-Al-Fe 层状金属氢氧化物 甲基橙 吸附 

分 类 号：O614[理学—无机化学] TF09[理学—化学]