实验研究 SO2和 NH3 通过在室温下低度使用单金属活性位点的活性碳对SO2和NH3的吸附
Guozhi Zeng1, Siyi Guo1, Xiaoqiang Zhai1
1School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China.
ACS omega
|February 12, 2024
概括
一种新的铜改性活性炭 (Cu/AC-0.05) 在低度下有效捕获二氧化硫 (SO2) 和氨 (NH3). 这种吸附剂表现出高容量,为空气中的分子污染物清除提供了简单有效的解决方案.
科学领域:
- 材料科学 材料科学 材料科学
- 环境化学环境化学
- 化学工程是化学工程的重要组成部分.
背景情况:
- 二氧化硫 (SO2) 和氨 (NH3) 是空气中的重要分子污染物 (AMC),即使在低度下,也会导致设备腐蚀和产品产量降低.
- 有效捕获SO2和NH3需要具有高吸附能力和简单加工的材料.
- 现有的方法可能缺乏有效性或简单性,用于联合去除SO2和NH3.
研究的目的:
- 开发和评估一种用于同时捕获SO2和NH3.3的新型吸附材料.
- 为了研究铜改性活性炭 (Cu/AC-0.05) 的吸附能力和性能.
- 为了阐明SO2和NH3吸附在改性材料上的表面反应机制.
主要方法:
- 动态吸附突破实验在23°C进行,污染物度为90ppm.
- 使用BET,SEM-EDX,XRD和TG-DSC进行吸附剂和消耗吸附剂的表征.
- 协同吸附分析以确定吸附能力.
主要成果:
- Cu/AC-0.05 呈现出高吸附能力: 1.03 mmol SO2 / g 和 1.45 mmol NH3 / g.
- 鉴定证实了对活性炭的均铜附着.
- 该研究确定了SO2和NH3吸附的表面反应机制.
结论:
- 活性炭的铜修饰为SO2和NH3捕获提供了一种有效的方法.
- 开发的吸附剂在低度和室温下去除这些有毒空气污染物的高性能.
- 这项工作为减轻空气中的分子污染物提供了一个可行的吸附剂选择.
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