Construction of spinel/biochar film/honeycomb monolithic catalyst for photothermal catalytic oxidation of VOCs

IF 4.3 3区工程技术 Q2 ENGINEERING, CHEMICAL

Frontiers of Chemical Science and Engineering Pub Date : 2024-05-31 DOI:10.1007/s11705-024-2453-x

Xikai Lu, Chunyan Zhang, Meng Wu, Wenjie Liu, Bin Xue, Chao Yao, Xiazhang Li

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Abstract

Photothermal catalytic oxidation emerges as a promising method for the removal of volatile organic compounds (VOCs). Herein, via sol-gel impregnation method, spinel CuMn₂O₄ was coated on attapulgite honeycombs with integrating biochar (BC) film as the second carrier, using chestnut shell as complexation agent. Various mass ratios of CuMn₂O₄ to chestnut shell was modulated to investigate the catalytic toluene degradation performance. Results indicated that the monolithic CuMn₂O₄/BC/honeycomb catalyst demonstrated superior photothermal catalytic toluene degradation with a low T₉₀ (temperature at 90% degradation) of 263 °C when the mass ratio of CuMn₂O₄ to biomass was 1:4. The addition of BC film substantially increased the honeycomb’s specific surface area and improved the photothermal conversion of spinel, leading to enhanced photothermal catalytic activity. This study presents a cost-effective strategy for eliminating industrial VOCs using clay-biomass based monolithic catalyst.

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构建用于 VOC 光热催化氧化的尖晶石/生物炭薄膜/蜂窝状整体催化剂

光热催化氧化是一种去除挥发性有机化合物（VOC）的有效方法。在此，通过溶胶-凝胶浸渍法，将尖晶石 CuMn2O4 涂覆在阿塔蓬石蜂窝上，并以栗壳作为络合剂，以整合生物炭（BC）薄膜作为第二载体。通过调节 CuMn2O4 与栗壳的不同质量比来研究甲苯的催化降解性能。结果表明，当 CuMn2O4 与生物质的质量比为 1:4 时，整体式 CuMn2O4/BC/ 蜂窝催化剂表现出优异的光热催化甲苯降解性能，T90（90% 降解温度）低至 263 ℃。BC 膜的加入大大增加了蜂窝的比表面积，提高了尖晶石的光热转化率，从而增强了光热催化活性。这项研究提出了一种利用基于粘土-生物质的整体催化剂消除工业挥发性有机化合物的经济有效的策略。

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来源期刊

Frontiers of Chemical Science and Engineering ENGINEERING, CHEMICAL-

CiteScore

7.60

自引率

6.70%

发文量

868

审稿时长

1 months

期刊介绍： Frontiers of Chemical Science and Engineering presents the latest developments in chemical science and engineering, emphasizing emerging and multidisciplinary fields and international trends in research and development. The journal promotes communication and exchange between scientists all over the world. The contents include original reviews, research papers and short communications. Coverage includes catalysis and reaction engineering, clean energy, functional material, nanotechnology and nanoscience, biomaterials and biotechnology, particle technology and multiphase processing, separation science and technology, sustainable technologies and green processing.