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Colorless BHET obtained from PET by modified mesoporous catalyst ZnO/SBA-15

文献类型：期刊论文

作者Yao, Haoyu1,2; Liu, Lifei1,2; Yan, Dongxia1,2; Zhou, Qing1,2; Xin, Jiayu1,2,3; Lu, Xingmei1,2,3,4; Zhang, Suojiang1,2,3,4
刊名CHEMICAL ENGINEERING SCIENCE
出版日期2022-02-02
卷号248页码:7
关键词Chemical degradation Ethylene glycol Bis-2-hydroxyethyl terephthalate Poly(ethylene terephthalate) ZnO SBA-15 Chroma
ISSN号0009-2509
DOI10.1016/j.ces.2021.117109
英文摘要Bis(2-hydroxyethyl terephthalate) (BHET) obtained by poly(ethylene terephthalate) (PET) catalytic glycolysis often has a slight color, which results in the subsequent preparation of repolymerized PET (rPET) with a darker color. The darker rPET is unable to be utilized in a high value. In order to obtain BHET with good chroma, a series of mesoporous catalysts were proposed and synthesized. Compared with traditional catalysts, the developed catalysts have obvious advantages to obtain BHET with a good chroma. The chromaticity values of BHET obtained through ZnO/SBA-15 catalyst are 96.64, 0.16 and 1.39 (L, a and b), and the chromaticity values of rPET after polymerization are 93.69, 0.86 and 1.31. The 5% ZnO/SBA-15 catalyst displayed prominent capabilities to degrade PET into BHET. The key factors influencing the reaction were further studied. Under the conditions of reaction temperature 197 degrees C, reaction time 1 h, mass ratio of Cat./PET 5% and mass ratio of ethylene glycol (EG)/PET 4:1, the catalytic efficiency reached the optimal one where conversion of PET is 100% and yield of BHET is 91.0%. The PET degradation kinetic was studied and conforms to the first order reaction kinetics. The reaction mechanism was deduced by in situ infrared reaction and theoretical calculation. The mechanism of ester bond breaking catalyzed by ZnO/SBA-15 was proposed. Mesoporous catalyst still has excellent catalytic activity through multiple recycling. (c) 2021 Elsevier Ltd. All rights reserved.
WOS关键词CONTAINING IONIC LIQUIDS ; POLYETHYLENE TEREPHTHALATE ; HIGHLY EFFICIENT ; GLYCOLYSIS ; POLY(ETHYLENE-TEREPHTHALATE) ; NANOPARTICLES ; DEGRADATION ; COBALT
资助项目National Key Research and Development Program of China[2019YFC1908204] ; National Natural Scientific Fund of China[21878292] ; National Natural Scientific Fund of China[21978291] ; National Natural Scientific Fund of China[21776289] ; National Natural Scientific Fund of China[21908232] ; National Natural Scientific Fund of China[22178364] ; National Natural Scientific Fund of China[22178343] ; National Natural Scientific Fund of China[NSFC22178358] ; International Part-nership Program of Chinese Academy of Sciences[122111KYSB20190060] ; K. C. Wong Education Foundation[GJTD-2018-04] ; Strategic Priority Research Program of Chinese Academy of Science[XDA21060300] ; Innovation Academy for Green Manufacture, Chinese Academy of Sciences[IAGM-2019-A06]
WOS研究方向Engineering
语种英语
WOS记录号WOS:000704369200005
出版者PERGAMON-ELSEVIER SCIENCE LTD
资助机构National Key Research and Development Program of China ; National Natural Scientific Fund of China ; International Part-nership Program of Chinese Academy of Sciences ; K. C. Wong Education Foundation ; Strategic Priority Research Program of Chinese Academy of Science ; Innovation Academy for Green Manufacture, Chinese Academy of Sciences
源URL[http://ir.ipe.ac.cn/handle/122111/50439]  
专题中国科学院过程工程研究所
通讯作者Lu, Xingmei; Zhang, Suojiang
作者单位1.Chinese Acad Sci, Inst Proc Engn, CAS Key Lab Green Proc & Engn, Beijing Key Lab Ion Liquids Clean Proc,State Key, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Sch Chem & Engn, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Innovat Acad Green Manufacture, Beijing 100190, Peoples R China
4.Univ Chinese Acad Sci, Sino Danish Coll, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714		 Yao, Haoyu,Liu, Lifei,Yan, Dongxia,et al. Colorless BHET obtained from PET by modified mesoporous catalyst ZnO/SBA-15[J]. CHEMICAL ENGINEERING SCIENCE,2022,248:7.
APA Yao, Haoyu.,Liu, Lifei.,Yan, Dongxia.,Zhou, Qing.,Xin, Jiayu.,...&Zhang, Suojiang.(2022).Colorless BHET obtained from PET by modified mesoporous catalyst ZnO/SBA-15.CHEMICAL ENGINEERING SCIENCE,248,7.
MLA Yao, Haoyu,et al."Colorless BHET obtained from PET by modified mesoporous catalyst ZnO/SBA-15".CHEMICAL ENGINEERING SCIENCE 248(2022):7.

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来源：过程工程研究所

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