Monolithic Catalyst of Ni Foam-Supported MnOx for Boosting Magnetocaloric Oxidation of Toluene,Environmental Science & Technology

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Monolithic Catalyst of Ni Foam-Supported MnOx for Boosting Magnetocaloric Oxidation of Toluene
Environmental Science & Technology ( IF 10.8 ) Pub Date : 2023-12-29 , DOI: 10.1021/acs.est.3c09541
Chunqi Wang _{1,

2,

3,

4,

5} , Shuangyong Su _{1,

2,

3,

4,

5} , Qiang Li _{1,

2,

3,

4} , Xuelong Lv _{1,

2,

3,

4} , Zhen Xu _{1,

2,

3,

4} , Jin Chen _{1,

2,

3,

4,

5} , Hongpeng Jia _{1,

2,

3,

4}

Affiliation

Catalytic oxidation has been considered an effective technique for volatile organic compound degradation. Development of metal foam-based monolithic catalysts coupling electromagnetic induction heating (EMIH) with efficiency and low energy is critical yet challenging in industrial applications. Herein, a Mn_18.2-NF monolithic catalyst prepared by electrodeposition exhibited superior toluene catalytic activity under EMIH conditions, and the temperature of 90% toluene conversion decreased by 89 °C compared to that in resistance furnace heating. Relevant characterizations proved that the skin effect induced by EMIH encouraged activation of gaseous oxygen, leading to superior low-temperature redox properties of Mn_18.2-NF under the EMIH condition. In situ Fourier transform infrared spectroscopy results showed that skin effect-induced activation of oxidizing species further accelerated the conversion of intermediates. As a result, the Mn_18.2-NF monolithic catalyst under EMIH demonstrated remarkable performance for the toluene oxidation, surpassing the conventional nonprecious metal catalyst and other reported monolithic catalysts.

中文翻译：

泡沫镍负载MnOx整体式催化剂促进甲苯磁热氧化

催化氧化被认为是降解挥发性有机化合物的有效技术。开发基于泡沫金属的整体式催化剂，将电磁感应加热 (EMIH) 与高效和低能耗相结合，在工业应用中至关重要但又充满挑战。其中，电沉积制备的Mn _18.2 -NF整体式催化剂在EMIH条件下表现出优异的甲苯催化活性，与电阻炉加热相比，90%甲苯转化率的温度降低了89℃。相关表征证明，EMIH引起的趋肤效应促进了气态氧的活化，导致Mn _18.2 -NF在EMIH条件下具有优异的低温氧化还原性能。原位傅里叶变换红外光谱结果表明，集肤效应诱导的氧化物质的活化进一步加速了中间体的转化。结果，EMIH下的Mn _18.2 -NF整体式催化剂在甲苯氧化中表现出卓越的性能，超越了传统的非贵金属催化剂和其他报道的整体式催化剂。

更新日期：2023-12-29

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