| Title: | Variation behavior of organic compounds in melamine-urea-formaldehyde impregnated bond paper in different pyrolysis stages |
| Author(s): | Chen Q; Dong Z; Zhang C; Yue Y; Xu Q; |
| Address: | "Shenzhen Engineering Laboratory for Eco-efficient Recycled Materials, School of Environment and Energy, Peking University Shenzhen Graduate School, China. Shenzhen Engineering Laboratory for Eco-efficient Recycled Materials, School of Environment and Energy, Peking University Shenzhen Graduate School, China. Electronic address: qiyongxu@pkusz.edu.cn" |
| DOI: | 10.1016/j.jhazmat.2022.129237 |
| ISSN/ISBN: | 1873-3336 (Electronic) 0304-3894 (Linking) |
| Abstract: | "Melamine-urea-formaldehyde impregnated bond paper (MUF) is widely used as panel coating and decorative raw paper. Inappropriate treatment of MUF may lead to environmental pollution. In this study, routine MUF and MUF treated with additional titanium (MUF-T) were subjected to fast pyrolysis, and the product properties at different temperatures were investigated. The pyrolysis temperature was selected considering the reaction stages determined by Gaussian curve-fitting on thermogravimetric analysis curves. It was found that the presence of additional titanium changed the decomposition order of the organic components at 220 degrees C. Urea-formaldehyde in MUF could be decomposed at 220 degrees C, which had little effect on other components (melamine and cellulose). However, in terms of MUF-T, the decomposition temperature of urea-formaldehyde was postponed to 244 degrees C, which means that the pyrolysis strategy needs to choose a temperature higher than 244 degrees C. The volatiles in MUF-T are more easily converted to bio-gas or bio-oil than those in MUF. However, only CH(4) was observed in the bio-gas generated of MUF-T at 220 degrees C, indicating that titanium did not catalyze the fracture of oxygen-containing functional groups at low temperatures. Titanium condensed at 550 degrees C, and the utilization of bio-char may face a problem of titanium particle shedding" |
| Keywords: | Formaldehyde/chemistry Hot Temperature *Pyrolysis Titanium Triazines *Urea Fast pyrolysis Melamine-urea-formaldehyde impregnated bond paper Organic component Products distribution Structure variation; |
| Notes: | "MedlineChen, Qindong Dong, Zihang Zhang, Chao Yue, Yuanmao Xu, Qiyong eng Research Support, Non-U.S. Gov't Netherlands 2022/06/25 J Hazard Mater. 2022 Aug 15; 436:129237. doi: 10.1016/j.jhazmat.2022.129237. Epub 2022 May 26" |
