An efficient and mild recycling of waste melamine formaldehyde foams by alkaline hydrolysis

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外文摘要：Melamine formaldehyde foam(MFF)generates many poisonous chemicals through the traditional recycling methods for organic resin wastes.Herein,a high MFF degradation ratio of ca.97 wt.％was achieved under the mild conditions(160 ℃)in a NaOH-H2O system with ammelide and ammeline as the main degradation products.The alkaline solvent had an obvious corrosion effect for MFF,as indicated by scanning electron microscopy(SEM).The reaction process and products distribution were studied by Fourier-transform infrared spectroscopy(FTIR),X-ray photoelectron spectroscopy(XPS),and 13C nuclear magnetic resonance(NMR).Besides,the MFF degradation products that have the similar chemical structures and bonding performances to those of melamine can be directly used as the raw material for synthesis of melamine urea-formaldehyde resins(MUFs).Moreover,the degradation system demonstrated here showed the high degradation efficiency after reusing for 7 times.The degradation process generated few harmful pollutants and no pre-or post-treatments were required,which proves its feasibility in the safe removal or recovery of waste MFF.

外文关键词：

Melamine formaldehyde foamDegradationAlkaline hydrolysisRecycling

作者：

Shaodi Wu、Ning Zhang、Chizhou Wang、Xianglin Hou、Jie Zhao、Shiyu Jia、Jiancheng Zhao、Xiaojing Cui、Haibo Jin、Tiansheng Deng

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作者单位：

Shanxi Engineering Research Center of Biorefinery,Institute of Coal Chemistry,Chinese Academy of Sciences,27 South Taoyuan Road,Taiyuan,030001,China

Center of Materials Science and Optoelectronics Engineering,University of Chinese Academy of Sciences,Beijing,100049,China

Department of Chemistry and Chemical Engineering,Taiyuan Institute of Technology,Taiyuan,Shanxi,030008,China

Beijing Key Laboratory of Fuels Cleaning and Advanced Catalytic Emission Reduction Technology/College of New Materials and Chemical Engineering,Beijing Institute of Petrochemical Technology,Beijing,102617,China

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基金：

国家自然科学基金Key Research and Development Program of Shanxi Province,Chinaspecial fund of Beijing Key Laboratory of Clean Fuels and Efficient Catalytic Emission Reduction Technology山西省"1331工程"建设项目

项目编号：

21774139202102040201009

出版年：

2024

DOI：

10.1016/j.gee.2022.10.008

绿色能源与环境(英文)

CSTPCD

ISSN：

年,卷(期)：2024.9(5)

参考文献量31