Knowledge Management System Of Guangzhou Institute of Energy Conversion, CAS
| Probing the combustion and pyrolysis behaviors of polyurethane foam from waste refrigerators | |
Yao, Zhitong1; Yu, Shaoqi1; Su, Weiping1; Wu, Daidai2 ; Liu, Jie1; Wu, Weihong1; Tang, Junhong1
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| 2019-12-02 | |
| Source Publication | JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
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| ISSN | 1388-6150 |
| Pages | 12 |
| Corresponding Author | Yao, Zhitong(sxyzt@126.com) ; Tang, Junhong(tang_jhjh@163.com) |
| Abstract | Polyurethane foam (PUR) from waste refrigerators has long been recognized as a difficult-to-treat electronic waste, due to its bulkiness, low weight and chlorofluorocarbon content. In this work, the combustion and pyrolysis behaviors of PUR were investigated using a versatile thermogravimetric-Fourier infrared spectrum-mass spectrum (TG/FT-IR/MS) technique. The decomposition mechanisms in both thermal processes were determined, and the fate of halogens was probed well. TG analysis indicated that the PUR combustion could be divided into three main stages with peak temperatures of 328, 557 and 970 degrees C, respectively. As a comparison, its pyrolysis could be divided into two steps with peak temperatures of 332 and 970 degrees C. FT-IR results indicated that the PUR combusted vigorously at 400-600 degrees C, whereas it decomposed drastically at the lower temperature of 200-400 degrees C in pyrolysis. MS analysis revealed that the urethane bonds in the PUR molecules broke into isocyanates and polyols at 200-400 degrees C in combustion, which further decomposed at 400-650 degrees C and reacted with halogens. However, the ester bonds ruptured into aromatic nitro compounds and ethers at 200 degrees C below in pyrolysis. At higher temperature range of 200-500 degrees C, more halogenated derivatives were detected with lower intensity. In addition to the halogenated products such as chlorofluorocarbons, chlorobenzene, dichlorobenzene, o-chloroaniline, and trifluoroacetone, small molecules of hydrogen cyanide, ammonia, carbon dioxide, carbon monoxide were all detected. |
| Keyword | Polyurethane foam Combustion Pyrolysis Decomposition mechanism Fate of halogens |
| DOI | 10.1007/s10973-019-09086-8 |
| WOS Keyword | THERMAL-DEGRADATION ; EMISSIONS ; PRODUCTS ; DISPOSAL ; COMPLEX ; CFC-11 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Natural Science Foundation of China[51606055] ; National Natural Science Foundation of China[51911530460] ; Zhejiang Provincial Natural Science Foundation of China[LY19B070008] |
| WOS Research Area | Thermodynamics ; Chemistry |
| Funding Organization | National Natural Science Foundation of China ; Zhejiang Provincial Natural Science Foundation of China |
| WOS Subject | Thermodynamics ; Chemistry, Analytical ; Chemistry, Physical |
| WOS ID | WOS:000500206500001 |
| Publisher | SPRINGER |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.giec.ac.cn/handle/344007/25923 |
| Collection | 中国科学院广州能源研究所 |
| Corresponding Author | Yao, Zhitong; Tang, Junhong |
| Affiliation | 1.Hangzhou Dianzi Univ, Coll Mat & Environm Engn, Hangzhou 310018, Zhejiang, Peoples R China 2.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Guangdong, Peoples R China |
| Recommended Citation GB/T 7714 | Yao, Zhitong,Yu, Shaoqi,Su, Weiping,et al. Probing the combustion and pyrolysis behaviors of polyurethane foam from waste refrigerators[J]. JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY,2019:12. |
| APA | Yao, Zhitong.,Yu, Shaoqi.,Su, Weiping.,Wu, Daidai.,Liu, Jie.,...&Tang, Junhong.(2019).Probing the combustion and pyrolysis behaviors of polyurethane foam from waste refrigerators.JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY,12. |
| MLA | Yao, Zhitong,et al."Probing the combustion and pyrolysis behaviors of polyurethane foam from waste refrigerators".JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY (2019):12. |
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