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使用DMSO和乙醇修改蒙莫里隆尼特的新方法
Adriana Stoski1, Bruno Rafael Machado2, Bruno Henrique Vilsinski3
1Interfacial Science Laboratory, Department of Chemistry, Midwestern State University, Guarapuava 85040-080, PR, Brazil.
Materials (Basel, Switzerland)
|June 27, 2024
概括
这项研究引入了一种新的方法,用二甲基硫氧化物 (DMSO) 来修改蒙莫里隆尼特粘土 (Na-Mt),显著缩短干燥时间至30分钟. 修改后的粘土,DMSO-SMAT,显示了层间间距的增加和热稳定性,对各种应用有用.
科学领域:
- 材料科学 材料科学 材料科学
- 纳米技术纳米技术
- 粘土科学 粘土科学
背景情况:
- 含有有机分子的改性粘土具有多种应用,包括污染物吸附,催化和药物输送.
- 现有的粘土间隔方法通常涉及漫长的过程.
- 蒙莫里隆石 (Na-Mt) 是一个广泛研究的粘土矿物质,具有显著的修饰潜力.
研究的目的:
- 开发和研究一种新的,更快的方法来用有机分子,特别是二甲基硫氧化物 (DMSO) 来修改Na-Mt.
- 通过使用先进的分析技术来描述由此产生的改性粘土 (DMSO-SMAT).
- 评估DMSO度,温度和超声波时间对修饰过程的影响.
主要方法:
- 在磁下使用乙醇,DMSO和Na-Mt混合物对Na-Mt进行修改.
- 使用X射线衍射 (XRD),富里埃变换红外光谱学 (FTIR),BET表面积分析和热重力测量分析 (TG/DTG) 进行改性粘土 (DMSO-SMAT) 的表征.
- 统计分析采用2 ^ 3因子设计来评估过程参数.
主要成果:
- XRD和FTIR证实了DMSO在Na-Mt结构中的插入,使得平面间距离平均增加0.57nm.
- BET分析表明,表面积显著减少 (从41.89m2/g降至2.16m2/g),孔隙性增加.
- 热分析证明了DMSO-SMAT的热稳定性,其 Na[Al5Mg]Si12O30(OH) 6 · 0.54 DMSO 的计算公式. 干燥时间在室温下缩短到30分钟.
结论:
- 开发的方法提供了一种快速有效的方法,可以将DMSO插入Na-Mt,从而产生热稳定的材料.
- 确定DMSO的数量是影响层间空间增加的重要因素.
- 由此产生的DMSO-SMAT材料对需要改造的粘土结构,具有增强的性能和更快的处理的应用具有前景.
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