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<p>In this work, we have developed a green and sustainable strategy for the synthesis of ethylene glycol, which is a highly valuable compound in chemical industry. In contrast to the currently applied energy-intensive process based on petroleum resources, this work demonstrates the photocatalytic pathway of methanol dehydrogenative coupling to produce ethylene glycol, utilizing methyl <i>tert</i>-butyl ether as the substrate to protect the hydroxyl group against oxidation. Photocatalytic tests reveal efficient C-C coupling of methyl <i>tert</i>-butyl ether with Pt/C-TiO(B)-650 catalyst under light irradiation, with the target product 1,2-di-<i>tert</i>-butoxyethane at a selectivity of 67% and a Pt-based turnover frequency of 2754 h<sup>−1</sup>. Scale up test demonstrates high stability of the system, reaching an accumulated turnover number of 120 000 as well as isolation of 13 g of the coupling product after 130 h irradiation. The target ethylene glycol is&#xa0;obtained by the hydrolysis of the dimer using the regenerable acidic resin catalyst.</p>

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Photocatalytic synthesis of ethylene glycol and hydrogen from methyl tert-butyl ether

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年4月28日

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  • Yong Peng,
  • Nils Rockstroh,
  • Jabor Rabeah,
  • Stephan Bartling,
  • Xingchao Dai,
  • Xuetao Qin,
  • Trang Minh Pham,
  • Annette-Enrica Surkus,
  • Robert Thomas,
  • Hermann Seitz,
  • Henrik Junge,
  • Matthias Beller

摘要

In this work, we have developed a green and sustainable strategy for the synthesis of ethylene glycol, which is a highly valuable compound in chemical industry. In contrast to the currently applied energy-intensive process based on petroleum resources, this work demonstrates the photocatalytic pathway of methanol dehydrogenative coupling to produce ethylene glycol, utilizing methyl tert-butyl ether as the substrate to protect the hydroxyl group against oxidation. Photocatalytic tests reveal efficient C-C coupling of methyl tert-butyl ether with Pt/C-TiO(B)-650 catalyst under light irradiation, with the target product 1,2-di-tert-butoxyethane at a selectivity of 67% and a Pt-based turnover frequency of 2754 h−1. Scale up test demonstrates high stability of the system, reaching an accumulated turnover number of 120 000 as well as isolation of 13 g of the coupling product after 130 h irradiation. The target ethylene glycol is obtained by the hydrolysis of the dimer using the regenerable acidic resin catalyst.