石油化工2025，Vol.54Issue(8)：1106-1115,10.DOI:10.3969/j.issn.1000-8144.2025.08.007
响应面法优化可循环钛系催化剂高效醇解聚对苯二甲酸乙二醇酯
Optimization of recyclable titanium-based catalysts for efficient glycolysis of polyethylene terephthalate using response surface method
摘要
Abstract
Based on the organic-inorganic hybrid titanium-based catalyst,an ethylene glycolysis reaction system for polyethylene terephthalate(PET)was established.Single-factor experiments were conducted to investigate the effect of reaction time,reaction temperature,and raw material feed ratio on the conversion rate of PET and the yield of bis(2-hydroxyethyl)terephthalate(BHET).Response surface method was then employed to optimize the depolymerization process to obtain the best depolymerization conditions.The recyclability of the catalyst was also explored.The results show that the catalyst has a uniform size and exhibits good catalytic activity and recyclability in the depolymerization reaction.When the catalyst dosage is 0.5%of the PET mass,the PET conversion rate reaches 100%,with a BHET yield of 81.47%and a purity of 98.70%.After being recycled for five times,the catalyst still maintains high catalytic activity.It aligns with the principles of green chemistry and demonstrates a promising application prospect in industrial polyester recycling.关键词
聚对苯二甲酸乙二醇酯/钛系催化剂/响应面法/醇解/循环/回收Key words
polyethylene terephthalate/titanium-based catalyst/response surface method/glycolysis/recycling/recovery分类
化学化工引用本文复制引用
程铭,沈静,曾志宏,韩翎,吉亚丽,孙宾..响应面法优化可循环钛系催化剂高效醇解聚对苯二甲酸乙二醇酯[J].石油化工,2025,54(8):1106-1115,10.基金项目
中国石油化工股份有限公司合作经费资助项目(14-22ZS0420) （14-22ZS0420）
国家重点研发计划(2020YFC1910300). （2020YFC1910300）
