CAJ | 학술논문

以锂皂石为层间黏士原料,通过微波插层反应,制备了水合氧化铈铝柱撑锂皂石新型层柱材料,采用FTIR、XRD、SEM等分析手段对材料的结构进行了表征,并研究了该材料对氟的吸附性能.结果表明,水合氧化铈铝进入锂皂石层间.形成具有层状微晶结构的柱撑锂皂石材料.随着铈铝柱化剂与锂皂石质量比(X_m)的增大,材料片层结构的层间距扩大、结晶度提高、表面结构更丰富.该材料对F的吸附率随X_m、吸附剂用量的增大而提高,吸附过程符合Langmuir等温吸附方程;当X_m达到0.1、吸附剂用量为0.2g/L时,该材料在60min内对F的吸附率可达到90%,吸附量达13.5mg/g,该吸附作用受温度、pH值的影响不大.
이리조석위층간점사원료,통과미파삽층반응,제비료수합양화시려주탱리조석신형층주재료,채용FTIR、XRD、SEM등분석수단대재료적결구진행료표정,병연구료해재료대불적흡부성능.결과표명,수합양화시려진입리조석층간.형성구유층상미정결구적주탱리조석재료.수착시려주화제여리조석질량비(X_m)적증대,재료편층결구적층간거확대、결정도제고、표면결구경봉부.해재료대F적흡부솔수X_m、흡부제용량적증대이제고,흡부과정부합Langmuir등온흡부방정;당X_m체도0.1、흡부제용량위0.2g/L시,해재료재60min내대F적흡부솔가체도90%,흡부량체13.5mg/g,해흡부작용수온도、pH치적영향불대.
The laponite pillared by hydrous ceria and alumina was prepared using synthetic laponite as interlayer clay by microwave intercalation reaction method. The micro-structure ofpillarcd laponite was characterized by FTIR, XRD, SEM, and its adsorption property of fluoride ion was investigated. Hydrous ceda and alumina could be intercalated into the structure of laponite and a layered microcrystalline structure could be formed. With the increase of mass ratio (X_m) of Ce-Al pillaring agent and lapenite, the d_(001) value of interlayer distance of the structure was enlarged, the crystallinity was improved and the delaminated layer structures were more abundant.As the X_m and sorbent dose were increased, the adsorption rate of fluodde ion was also increased, and the adsorption isotherm of the pillared laponite to fluoride ion could be well fitted by the Langmuir equation.When the X_m was 0.1, with 0.2g/L of the sorbent, the adsorption rate reached to 90%, and the adsorption capacity reached to 13.5 mg/g within 60min, while temperature and pH value had little effects on the adsorption process.