由微量水性碳酸盐激活的交叉链接的凝衍生碳,用于二氧化碳吸附
Soniya Mariya Varghese1, Additi Roy Chowdhury2, Dali Naidu Arnepalli3
1Department of Chemistry, Indian Institute of Technology Madras, Chennai 600036, India; Department of Civil Engineering, Indian Institute of Technology Madras, Chennai 600036, India.
使用最小的碳酸 (K2CO3) 来从奇托水凝中绿色合成活性碳,可以产生高表面积的材料. 这些新型碳具有出色的二氧化碳 (CO2) 吸附能力,为二氧化碳捕获提供了可持续的解决方案.
科学领域:
- 材料科学 材料科学 材料科学
- 绿色化学 绿色化学
- 环境科学 环境科学
背景情况:
- 活性炭对于二氧化碳捕获至关重要,但传统的合成方法可能是能源密集型和环境负担.
- 开发高性能活性炭的可持续前体和合成路径是一个持续的研究挑战.
研究的目的:
- 报告一种新型的绿色合成方法,用于使用基托基水凝的活性炭.
- 研究微量碳酸 (K2CO3) 作为活性剂的使用.
- 为了评估合成活性炭的二氧化碳吸附性能.
主要方法:
- 从稀释水溶液中合成并浸了微量K2CO3的基托桑基凝.
- 浸的水凝经过冷干燥,然后进行单步热解,以产生活性炭.
- 鉴定了活性炭的孔隙结构,表面积和孔隙体积.
- 在25°C和1bar时测量了CO2吸附能力.
主要成果:
- 活性炭的表面积高达2026 m2/g,孔积为0.76 cm3/g,已成功合成.
- 使用低K2CO3度 (每克基托水凝0.23g) 实现了最佳结果.
- 合成的活性炭具有4.2mmol/g的最大二氧化碳吸附能力.
结论:
- 用微量K2CO3浸的生物聚合物水凝是绿色活性碳合成的有效前体.
- 开发的方法提供了一条可持续的途径,以获得高表面积的碳,适合用于二氧化碳捕获应用.
- 这种方法提供了可调节的孔隙结构,以提高吸附性能.
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