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具有吸附和催化氧化能力的双功能化生物炭的设计,用于增强二烯排放控制

Md Wahad Uz Zaman¹, Ajit Dattatray Phule¹, Thillai Govindaraja Senthamaraikannan²

¹Department of Environmental & IT Engineering, Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon, 34134, Republic of Korea.

Environmental research

|January 20, 2025

概括

这项研究开发了一种双功能化生物炭 (NDB),用于去除有害空气污染物托卢烯. 优化的NDB有效地吸附和催化氧化,为挥发性有机化合物 (VOC) 控制提供可持续的解决方案.

科学领域:

环境化学环境化学
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.

背景情况:

像烯这样的挥发性有机化合物 (VOC) 是具有重大环境和健康风险的危险空气污染物.
有效的补救策略对于减少VOC排放和减轻其影响至关重要.
生物炭是一种可持续的碳酸性材料,显示出对VOC控制的潜力,但通常需要修改以提高其性能.

研究的目的:

开发一种用氧化 (NaOH) 激活的双功能化生物炭 (NDB),用于同时吸附和催化氧化.
优化NDB合成参数 (激活剂和热解温度) 以提高二烯整治.
为了研究结构-属性关系,控制NDB材料的吸附和催化性能.

主要方法:

在不同温度下通过NaOH激活和热解合成NDB.
描述NDB属性,包括表面积,孔隙结构和物种.
使用动态吸附试验评估二烯吸附能力.
在高温下对二烯转化的催化氧化性能的评估.

主要成果:

用NaOH激活的NDB表现出显著的中孔体积和高表面积.
最佳的NDB样品 (BUN-900) 达到422.25 mg/g的高托吸附能力,与其较大的特定表面积 (1321.72 m2/g) 有关.
另一种NDB样本 (BU-800) 通过催化氧化在450°C完成了烯转化,这种转化归因于pyridinic-N物种;然而,它具有较低的吸附能力.

结论:

氧化激活和兴奋剂显著增强生物炭对挥发性有机物控制的双功能性质.
在开发的NDB材料中,吸附和催化氧化性能之间存在一个权衡.
这种双功能的NDB呈现出一个有希望的和可持续的材料,用于二烯排放的联合吸附和催化氧化.

关键词:

吸附方式吸附方式吸附方式双功能材料是一种双功能材料.催化氧化的催化氧化.亚物种是有气的物种.用气杂的生物炭.托卢去除的方法

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