Metal-Organic Framework Supporting Fe3O4 Prepared by Microwave in Couple With NTP to Eliminate VOCs From Biofuel

• Published in: Frontiers in energy research Vol. 10
• Main Authors: Gao, Yan, Cao, Qing, Guan, Ning, Zhang, Zhanchao, Fan, Guolan, Dou, Huawei, Li, Shijie, Wang, Qiang, Chen, Baoming
• Format: Journal Article
• Language: English
• Published: Frontiers Media S.A 18.07.2022
• Subjects: biofuel; magnetic; metal-organic framework; microwave; non-thermal plasma; VOCs
• ISSN: 2296-598X; 2296-598X
• DOI: 10.3389/fenrg.2022.936493

In the production process of briquette biofuel, terpenes such as pinene and camphene, as well as non-terpenoid VOCs such as formic acid, acetaldehyde, and benzene, are generated during conditioning, drying and other procedures. Different catalysts of Fe 3 O 4 supported by CoFe-ZIFs were prepared by thermal dissolution method and microwave dissolution method with changing the doping amount of iron. The structures of these catalysts were characterized by X-ray Diffraction (XRD), Fourier transform infrared spectrometer Fourier-Transformed InfraRed, thermogravimetric analysis (TG), and scanning electron microscope and the catalytic performance for α-pinene was tested on a fixed bed. The results show that, compared with the thermal dissolution method, the microwave dissolution method was easier to induce iron to form Fe 3 O 4 grains with higher activity. At the same time, the grains did not affect the formation of CoFe-ZIFs structure. Fe 3 O 4 supported on CoFe-ZIFs enhanced the catalytic activity and energy efficiency of the catalysts for α-pinene. Among the test samples, CoFe14-ZIF-W prepared by microwave method with Fe doping 14% mol exhibited the stable structural characteristics and the highest catalytic efficiency of 94.3% and energy efficiency of 8.11 g·kWh −1 , which provided a further possibility of practical application for the removal of VOCs from biomass.