Ceramic Fiber Paper-Based Manganese Oxides Catalyst for Room Temperature Formaldehyde Oxidation

IF 2.3 4区化学 Q3 CHEMISTRY, PHYSICAL

Catalysis Letters Pub Date : 2025-01-02 DOI:10.1007/s10562-024-04898-2

Xiuxiu Wang, Jiawei Zhao, Chuanjun Zhao, Yexin Zhang, Sakil Mahmud, Jian Zhang

{"title":"Ceramic Fiber Paper-Based Manganese Oxides Catalyst for Room Temperature Formaldehyde Oxidation","authors":"Xiuxiu Wang, Jiawei Zhao, Chuanjun Zhao, Yexin Zhang, Sakil Mahmud, Jian Zhang","doi":"10.1007/s10562-024-04898-2","DOIUrl":null,"url":null,"abstract":"<div><p>The catalytic removal of trace formaldehyde (HCHO) at ambient temperatures is crucial for improving indoor air quality, necessitating the use of monolithic catalysts over traditional powder forms for real-world applications. In this study, an aluminosilicate fiber-woven ceramic filter paper (CFP) was selected as the substrate, onto which a Mn<sub>2</sub>O<sub>3</sub> catalyst was in situ coated via a combustion method utilizing Mn(NO<sub>3</sub>)<sub>2</sub> as the oxidant and glycine as the fuel. The resulting monolithic Mn<sub>2</sub>O<sub>3</sub>/CFP catalyst was compared to a MnO<sub>2</sub>/CFP catalyst, prepared by direct decomposition of Mn(NO<sub>3</sub>)<sub>2</sub> on the same substrate. The Mn<sub>2</sub>O<sub>3</sub>/CFP catalyst exhibited superior characteristics for HCHO oxidation, including a more porous architecture, higher redox capability, and an abundance of surface-active oxygen species with enhanced mobility of surface lattice oxygen. These features enabled the Mn<sub>2</sub>O<sub>3</sub>/CFP catalyst to achieve significantly higher HCHO conversion at room temperature (90%) compared to the MnO<sub>2</sub>/CFP catalyst (21%). Additionally, in a durability test carried out in a mode of dynamic flow at room temperature, the Mn<sub>2</sub>O<sub>3</sub>/CFP catalyst maintained a high HCHO conversion rate of 66% over 11 days, demonstrating its potential for practical indoor air purification applications.</p><h3>Graphical abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":508,"journal":{"name":"Catalysis Letters","volume":"155 2","pages":""},"PeriodicalIF":2.3000,"publicationDate":"2025-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Catalysis Letters","FirstCategoryId":"92","ListUrlMain":"https://link.springer.com/article/10.1007/s10562-024-04898-2","RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}

引用次数: 0

Abstract

The catalytic removal of trace formaldehyde (HCHO) at ambient temperatures is crucial for improving indoor air quality, necessitating the use of monolithic catalysts over traditional powder forms for real-world applications. In this study, an aluminosilicate fiber-woven ceramic filter paper (CFP) was selected as the substrate, onto which a Mn₂O₃ catalyst was in situ coated via a combustion method utilizing Mn(NO₃)₂ as the oxidant and glycine as the fuel. The resulting monolithic Mn₂O₃/CFP catalyst was compared to a MnO₂/CFP catalyst, prepared by direct decomposition of Mn(NO₃)₂ on the same substrate. The Mn₂O₃/CFP catalyst exhibited superior characteristics for HCHO oxidation, including a more porous architecture, higher redox capability, and an abundance of surface-active oxygen species with enhanced mobility of surface lattice oxygen. These features enabled the Mn₂O₃/CFP catalyst to achieve significantly higher HCHO conversion at room temperature (90%) compared to the MnO₂/CFP catalyst (21%). Additionally, in a durability test carried out in a mode of dynamic flow at room temperature, the Mn₂O₃/CFP catalyst maintained a high HCHO conversion rate of 66% over 11 days, demonstrating its potential for practical indoor air purification applications.

Graphical abstract

Abstract Image

查看原文本刊更多论文

陶瓷纤维纸基锰氧化物室温甲醛氧化催化剂

在环境温度下催化去除微量甲醛（HCHO）对于改善室内空气质量至关重要，因此在实际应用中需要使用整体催化剂而不是传统的粉末形式。本研究选择硅酸铝纤维编织陶瓷滤纸（CFP）作为衬底，采用Mn(NO3)2为氧化剂，甘氨酸为燃料的燃烧方法，在其上原位涂覆Mn2O3催化剂。将所制得的整体式Mn2O3/CFP催化剂与在同一衬底上直接分解Mn(NO3)2制备的MnO2/CFP催化剂进行了比较。Mn2O3/CFP催化剂表现出优异的HCHO氧化特性，包括更多孔的结构、更高的氧化还原能力、丰富的表面活性氧和增强的表面晶格氧迁移率。这些特性使得Mn2O3/CFP催化剂在室温下的HCHO转化率（90%）明显高于MnO2/CFP催化剂（21%）。此外，在室温动态流动模式下进行的耐久性测试中，Mn2O3/CFP催化剂在11天内保持了66%的高HCHO转化率，证明了其在实际室内空气净化应用中的潜力。图形抽象

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Catalysis Letters 化学-物理化学

CiteScore

5.70

自引率

3.60%

发文量

327

审稿时长

1 months

期刊介绍： Catalysis Letters aim is the rapid publication of outstanding and high-impact original research articles in catalysis. The scope of the journal covers a broad range of topics in all fields of both applied and theoretical catalysis, including heterogeneous, homogeneous and biocatalysis. The high-quality original research articles published in Catalysis Letters are subject to rigorous peer review. Accepted papers are published online first and subsequently in print issues. All contributions must include a graphical abstract. Manuscripts should be written in English and the responsibility lies with the authors to ensure that they are grammatically and linguistically correct. Authors for whom English is not the working language are encouraged to consider using a professional language-editing service before submitting their manuscripts.

文献相关原料

公司名称

产品信息

阿拉丁

Manganese nitrate solution