活性炭金属改性对吸附能力的影响
Nurlan Idrissov1,2, Nursultan Aidarbekov3, Zhengisbek Kuspanov1,2
1Department of Materials Science, Nanotechnology and Engineering Physics, Satbayev University, Almaty 050032, Kazakhstan.
来自大米的未经修改的活性炭显示出优越的储能能力. 金属修改降低了性能,表明孔隙结构和表面积是有效吸附的关键.
科学领域:
- 材料科学 材料科学 材料科学
- 化学工程是化学工程的重要组成部分.
- 储能 储能 储能 储能 储能 储能
背景情况:
- 是一种清洁的能源载体,但高效的储存仍然是一个挑战.
- 活性炭 (AC) 是由于其高表面积而成为储存的潜在材料.
- 米提供了一种可持续的活性碳生产来源.
研究的目的:
- 为了评估从米中提取的活性炭的吸附性能.
- 为了研究 (Mg) 和 (Ni) 盐的修饰对储能能力的影响.
- 了解孔隙结构,表面特性和吸收之间的关系.
主要方法:
- 从米中合成活性炭.
- 用Mg和Ni盐对活性炭进行修改.
- 在25°C和50°C高达80bar的温度下进行吸附异温测量.
- 使用FTIR,拉曼和XRD分析进行表征.
主要成果:
- 未经修改的交流电表现出最高的吸收率 (在25°C时为0.62 wt%),这与其高表面积和超微度有关.
- 和的修改通常会降低吸附能力,这可能是由于孔隙堵塞和表面化学变化.
- 所有样本都显示稳定的循环吸附-脱附,修饰样本中的歇斯底里表明了毛细血管凝结.
结论:
- 微孔尺寸分布和可访问的表面功能对于AC中的储能能力至关重要.
- 从大米中获得的未经修改的活性炭是低温储存的有希望的材料.
- 优化金属含量对于改性材料至关重要,Mg改性ACM10在改性样本中表现最好.
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