Improving the Efficiency for the Production of Bis-(2-Hydroxyethyl) Terephtalate (BHET) from the Glycolysis Reaction of Poly(Ethylene Terephtalate) (PET) in a Pressure Reactor

被引：31

作者：

Mendiburu-Valor, Eider ^{[1
]}

Mondragon, Gurutz ^{[1
]}

Gonzalez, Nekane ^{[2
]}

Kortaberria, Galder ^{[1
]}

Eceiza, Arantxa ^{[1
]}

Pena-Rodriguez, Cristina ^{[1
]}

机构：

[1] Univ Basque Country UPV EHU, Chem & Environm Engn Dept, Mat Tecnol Res Grp, Fac Engn, Plaza Europa 1, Donostia San Sebastian 20018, Spain

[2] Antex Josep Hereu i Aulet 8, Angles 17160, Spain

来源：

POLYMERS | 2021年 / 13卷 / 09期

关键词：

PET; glycolysis; BHET; pressure reactor; POLYETHYLENE TEREPHTHALATE; THERMAL-DEGRADATION; POLY(ETHYLENE-TEREPHTHALATE); DEPOLYMERIZATION; KINETICS; WASTE; BOTTLES;

D O I：

10.3390/polym13091461

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The depolymerization process of PET by glycolysis into BHET monomer is optimized in terms of reaction temperature and time, by carrying out the process under pressure to be faster for reducing the energy required. Almost pure BHET has been obtained by working in a pressure reactor at 3 bar both at 220 and 180 degrees C after short reaction times, while for longer ones a mixture of oligomers and dimers is obtained. Depending on the potential application required, the obtention of different reaction products is controlled by adjusting reaction temperature and time. The use of a pressure reactor allows work at lower temperatures and shorter reaction times, obtaining almost pure BHET. To the best of our knowledge, except for microwave-assisted procedures, it is the first time in which pure BHET is obtained after such short reaction times, at lower temperatures than those usually employed.

引用

页数：13

共 34 条

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