Scholarlink

<p>The compositional heterogeneity of post-consumer plastic waste, exemplified by prevalent polyethylene (PE)/polypropylene (PP) mixtures (&gt;50% of the plastic market), severely complicates recycling. Kinetic disparities between PE and PP during chemical recycling create significant conversion gradients, limiting valued product yield and process viability. Here, leveraging strong interfacial coupling between ruthenium oxides and rutile TiO<sub>2</sub>, we construct highly active, epitaxial RuO<sub>x</sub> sites enabling efficient one-pot co-conversion of PE/PP mixtures with a high liquid yield of 95.02%, while maintaining a low 0.62% gas yield. Compared to conventional Ru nanoparticles, the epitaxial RuO<sub>x</sub> structure provides additional dehydrogenation sites for PP activation, which promotes carbon–metal back-donation to weaken C–C bonds, thus exhibiting comparable activation capabilities toward both <sup>3</sup>C–<sup>2</sup>C bond in PP and <sup>2</sup>C–<sup>2</sup>C bond in PE. This unique epitaxial catalyst enables highly efficient co-hydrogenolysis of mixed polyolefins, establishing a practical approach for their upcycling.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

One-pot co-upcycling of mixed polyolefin waste

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年3月2日

查看全文
  • Weilin Tu,
  • Mingyu Chu,
  • Tianran Yan,
  • Qingqing Zhang,
  • Xianpeng Wang,
  • Liang Zhang,
  • Muhan Cao,
  • Qiao Zhang,
  • Mingshan Zhu,
  • Mingxiu Zhan,
  • Jinxing Chen

摘要

The compositional heterogeneity of post-consumer plastic waste, exemplified by prevalent polyethylene (PE)/polypropylene (PP) mixtures (>50% of the plastic market), severely complicates recycling. Kinetic disparities between PE and PP during chemical recycling create significant conversion gradients, limiting valued product yield and process viability. Here, leveraging strong interfacial coupling between ruthenium oxides and rutile TiO2, we construct highly active, epitaxial RuOx sites enabling efficient one-pot co-conversion of PE/PP mixtures with a high liquid yield of 95.02%, while maintaining a low 0.62% gas yield. Compared to conventional Ru nanoparticles, the epitaxial RuOx structure provides additional dehydrogenation sites for PP activation, which promotes carbon–metal back-donation to weaken C–C bonds, thus exhibiting comparable activation capabilities toward both 3C–2C bond in PP and 2C–2C bond in PE. This unique epitaxial catalyst enables highly efficient co-hydrogenolysis of mixed polyolefins, establishing a practical approach for their upcycling.