CAJ | 학술논문

为获得一种分散性好、载体酸性易调变和高热稳定性的新型催化材料，该研究采用插层法和原位法制备NiAl-LDH/MMT复合材料，并借助XRD、IR、TG-DTA、BET、SEM等手段对合成材料进行了表征。插层法是先将NiAl-LDH 进行剥离形成带正电荷的无机层片，然后与蒙脱土进行插层复合；原位法是先将蒙脱土的层间阳离子Na+交换为Ni2+和Al3+，然后加碱使Ni2+、Al3+在蒙脱土层间反应生成 NiAl-LDH。结果表明，两种方法均合成出了晶型良好的复合材料，形成单层 LD H 层板与单层蒙脱土层板交替排列结构；复合材料的LDH 层板羟基脱除温度达525℃。
위획득일충분산성호、재체산성역조변화고열은정성적신형최화재료，해연구채용삽층법화원위법제비NiAl-LDH/MMT복합재료，병차조XRD、IR、TG-DTA、BET、SEM등수단대합성재료진행료표정。삽층법시선장NiAl-LDH 진행박리형성대정전하적무궤층편，연후여몽탈토진행삽층복합；원위법시선장몽탈토적층간양리자Na+교환위Ni2+화Al3+，연후가감사Ni2+、Al3+재몽탈토층간반응생성 NiAl-LDH。결과표명，량충방법균합성출료정형량호적복합재료，형성단층 LD H 층판여단층몽탈토층판교체배렬결구；복합재료적LDH 층판간기탈제온도체525℃。
To obtain a new catalytic materials with good dispersion,easy acid modulation of carrier and high thermal stability,the composites of NiAl-LDH/MMT was prepared respectively by intercalation method and in situ method.The compounds was characterized by XRD,IR,TG-DTA,BET and SEM measurement.The in-tercalation method was as follows.First,exfoliated the NiAl-LDH to get the LDH layers,then inserted the ex-foliated NiAl-LDH layers into the interlayers of MMT.The in situ method was first to change the Na-MMT in-to NiAl-MMT,then add alkali into NiAl-MMT fluid to form a composite.The results showed that both of the two methods could prepared composites with good crystallization.The LDH layers and MMT layers were layer by layer staggered alternately.The LDH layer’s hydroxyl removal temperature of the composites reached 525℃.