通过催化将塑料废弃物中的邻苯二甲酸酯转化为苯甲酸和苯甲酸酯增塑剂

IF 4.3 2区化学 Q2 CHEMISTRY, MULTIDISCIPLINARY

Chemical Communications Pub Date : 2024-11-05 DOI:10.1039/d4cc05158k

Simon Windels , Dirk E. De Vos

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引用次数: 0

摘要

为了管理塑料废料流中的遗留添加剂，目前正在开发几种萃取工艺，以实现聚合物基体的安全再利用。在这种闭环方法中，同样重要的是制定提取成分的再增值战略，尤其是在邻苯二甲酸酯增塑剂等高用量添加剂的情况下。本研究展示了利用廉价的 Cu2O 和 H-Beta 沸石，在水这种安全环保的溶剂中，通过单锅水解-脱羧工艺，将实际塑料废料中提取的邻苯二甲酸酯催化转化为苯甲酸 (BA)。由于这两种反应都具有极佳的产物选择性，因此 BA 的定量收率高达 99%。对纯化的羧酸进行酯化处理后，可生产出一种苯甲酸酯类增塑剂替代品，总工艺收率高达 94%，为报废的邻苯二甲酸酯类增塑剂提供了一条潜在的再增值途径。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Catalytically transforming legacy phthalate esters from plastic waste into benzoic acid and benzoate plasticizers†

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Catalytically transforming legacy phthalate esters from plastic waste into benzoic acid and benzoate plasticizers†

This study demonstrates the catalytic conversion of real plastic waste-extracted phthalate plasticizers into benzoic acid (BA), via a one-pot hydrolysis–decarboxylation process based on inexpensive Cu₂O and H-beta zeolite, in water as a safe and environmentally benign solvent. As a result of the excellent product selectivity in both reactions, BA was obtained in quantitative yields (>99%). Esterification of the purified carboxylic acid resulted in the production of an alternative benzoate plasticizer, with a total process yield up to 94%.

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来源期刊

Chemical Communications 化学-化学综合

CiteScore

8.60

自引率

4.10%

发文量

2705

审稿时长

1.4 months

期刊介绍： ChemComm (Chemical Communications) is renowned as the fastest publisher of articles providing information on new avenues of research, drawn from all the world''s major areas of chemical research.