CAS OpenIR
Alcoholysis of polyethylene terephthalate to produce dioctyl terephthalate using choline chloride-based deep eutectic solvents as efficient catalysts
Zhou, Lei1,2; Lu, Xingmei2,3; Ju, Zhaoyang2; Liu, Bo2; Yao, Haoyu2; Xu, Junli2; Zhou, Qing2,3; Hu, Yufeng1; Zhang, Suojiang2,3
2019-02-21
Source PublicationGREEN CHEMISTRY
ISSN1463-9262
Volume21Issue:4Pages:897-906
AbstractDioctyl terephthalate (DOTP) is a new kind of green and non-toxic plasticizer. The traditional process to prepare DOTP is costly and complicated, thus it is very necessary to find an efficient and environmentally-friendly way to obtain DOTP. In this study, we prepared DOTP from the alcoholysis of polyethylene terephthalate (PET) by using 2-ethyl-1-hexanol (2-EH) as the solvent, and used choline chloride-based deep eutectic solvents (ChCl-based DESs) as the catalysts due to their cheapness, low toxicity and ease of preparation. Under the optimized conditions (ChCl/Zn(Ac)(2) 1:1, 5 wt%, 180 degrees C, 60 min, PET:2-EH 1:5 molar ratio), the conversion of PET and the yield of DOTP were 100% and 84.7%, respectively. Furthermore, the possible mechanism was proposed through density functional theory (DFT) calculations and experimental results. It revealed that the hydrogen bonds (H-bonds) formed between 2-EH and DESs played a key role in accelerating the degradation process. Furthermore, the kinetics of the reaction was also investigated, and the results indicated that the alcoholysis of PET is a first-order reaction with an activation energy of 95.05 kJ mol(-1). This work confirmed that ChCl-based DESs are favorable for the degradation of PET to prepare DOTP under mild conditions, which can also be used for other polymer degradation strategies.
DOI10.1039/c8gc03791d
Language英语
WOS KeywordCONTAINING IONIC LIQUIDS ; ISOOCTYL ALCOHOL ; WASTE PET ; POLY(ETHYLENE-TEREPHTHALATE) ; GLYCOLYSIS ; EXTRACTION ; DEPOLYMERIZATION ; POLYMERIZATION ; DEGRADATION ; KINETICS
Funding ProjectNational Basic Research Program of China (973 Program)[2015CB251401] ; Key Research Program of Frontier Sciences, CAS[QYZDY-SSW-JSC011] ; National Natural Scientific Fund of China[21878292] ; National Natural Scientific Fund of China[21476234] ; National Natural Scientific Fund of China[21776289] ; Strategic Priority Research Program of the Chinese Academy of Science[XDA21060300] ; K. C. Wong Education Foundation
WOS Research AreaChemistry ; Science & Technology - Other Topics
WOS SubjectChemistry, Multidisciplinary ; Green & Sustainable Science & Technology
Funding OrganizationNational Basic Research Program of China (973 Program) ; Key Research Program of Frontier Sciences, CAS ; National Natural Scientific Fund of China ; Strategic Priority Research Program of the Chinese Academy of Science ; K. C. Wong Education Foundation
WOS IDWOS:000459890600017
PublisherROYAL SOC CHEMISTRY
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/28336
Collection中国科学院过程工程研究所
Corresponding AuthorHu, Yufeng; Zhang, Suojiang
Affiliation1.China Univ Petr, State Key Lab Heavy Oil Proc, Beijing 102249, Peoples R China
2.Chinese Acad Sci, Beijing Key Lab Ionic Liquids Clean Proc, State Key Lab Multiphase Complex Syst, CAS Key Lab Green Proc & Engn,Inst Proc Engn, Beijing 100190, Peoples R China
3.Univ Chinese Acad Sci, Coll Chem & Engn, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Zhou, Lei,Lu, Xingmei,Ju, Zhaoyang,et al. Alcoholysis of polyethylene terephthalate to produce dioctyl terephthalate using choline chloride-based deep eutectic solvents as efficient catalysts[J]. GREEN CHEMISTRY,2019,21(4):897-906.
APA Zhou, Lei.,Lu, Xingmei.,Ju, Zhaoyang.,Liu, Bo.,Yao, Haoyu.,...&Zhang, Suojiang.(2019).Alcoholysis of polyethylene terephthalate to produce dioctyl terephthalate using choline chloride-based deep eutectic solvents as efficient catalysts.GREEN CHEMISTRY,21(4),897-906.
MLA Zhou, Lei,et al."Alcoholysis of polyethylene terephthalate to produce dioctyl terephthalate using choline chloride-based deep eutectic solvents as efficient catalysts".GREEN CHEMISTRY 21.4(2019):897-906.
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