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揭示GdCe复合氧化物的协同效应,支持生物炭催化剂用于甲消除:提高性能和SO2耐受性

Yun Jiang¹, Lei Gao², Jianyong Dai³

¹School of Resources Environment and Safety Engineering, University of South China, Hengyang 421001, China; National & Local Joint Engineering Research Center for Airborne Pollutants Control and Radioactivity Protection in Buildings, Hengyang 421001, China.

Journal of environmental sciences (China)

|December 1, 2024

概括

这项研究开发了生物炭上的GdCe氧化物以去除甲. 最好的催化剂达到96.8%的效率,对工业空气净化所需的SO2和水分有很好的耐受性.

科学领域:

材料科学材料科学材料科学
环境化学环境化学
催化剂是一种催化剂.

背景情况:

甲 (HCHO) 是一种危险的室内空气污染物.
高效的催化分解HCHO对于环境修复至关重要.

研究的目的:

在生物炭 (Gd_yCe_1-y/MPBs) 上制造和评估用于甲催化分解的GdCe氧化物.
研究这些新型催化剂的结构性能关系.

主要方法:

从玉米和污水污泥中合成Gd_yCe_1-y/MPBs.
使用XPS,现场DRIFTS,BET,XRD,SEM和H-TPR进行表征.
在各种条件下测试催化性能 (温度,O₂,SO₂,H₂).

主要成果:

10%Gd_0.25Ce_0.75/MPB在200°C时显示出96.8%的HCHO去除效率,具有90.5%的选择性.
催化剂在广泛的温度范围 (160320 °C) 上对SO2和水分具有很好的耐受性.
GdO_x和CeO_x的协同效应增强了表面积,活性氧物种和氧化还原能力.

结论:

Gd_yCe_1-y/MPB是HCHO分解的有效催化剂.
层次性的多孔结构和协同作用的金属氧化物有助于优越的催化活性.
开发的催化剂显示了工业空气净化应用的巨大潜力.

关键词:

催化氧化的催化氧化.甲甲是一种形式的甲.在 GdCe 氧化物.层次性的多孔生物炭.

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Catalysis

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