Xiu, Fu-Rong; Wang, Yixiao; Yu, Xuan; Li, Yifan; Lu, Yongwei; Zhou, Ke; He, Jiahuan; Song, Zhiqi; Gao, Xiang published the artcile< Novel safety treatment strategy of DEHP-rich flexible polyvinyl chloride waste through low-temperature critical aqueous ammonia treatment>, Application In Synthesis of 104-76-7, the main research area is easte flexible polyvinyl chloride critical aqueous ammonia plasticizer dechlorination; Dechlorination; Low-temperature critical aqueous ammonia; Plasticizer recovery; Waste flexible polyvinyl chloride.
Flexible polyvinyl chloride (f-PVC) contains high content of plasticizers and chlorine. Improper treatment of waste f-PVC can easily lead to resource wasting and bring environmental risks. In this work, a novel strategy for resource recycling and dechlorination of waste f-PVC containing high content of di-(2-ethylhexyl) phthalate (DEHP) was developed by using low-temperature critical aqueous ammonia (LCA) process. The LCA treatment of waste DEHP-rich f-PVC (WDP) was performed at the temperature range of 200-400°C with the ammonia concentration of 1%-5%. The results indicated that the LCA temperature had a significant effect on the chem. composition of decomposition products. High concentration of 2-ethyl-1-hexanol (86.12%), which is an important chem. feedstock and is derived from the decomposition of DEHP, could be obtained from WDP by the LCA process at 250°C, and the concentration of 2-ethyl-1-hexanol decreased markedly with increasing the temperature Benzaldehyde and acetophenone were generated when the temperature increased to 300°C, and their concentrations increased with the rise of temperature The increase of the ammonia concentration and the temperature could enhance the dechlorination efficiency of WDP. The dechlorination could reach 98.7% at 300°C. This result showed that the LCA process was a promising and high-efficiency strategy for the sustainable management of WDP.
Science of the Total Environment published new progress about Dechlorination. 104-76-7 belongs to class alcohols-buliding-blocks, and the molecular formula is C8H18O, Application In Synthesis of 104-76-7.
Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts