释放光老化聚烯烃在陆地和水域中的可持续潜力：一种用于生产烃类燃料和蜡的类海胆状Ru/CeO催化策略
{"_":"Unlocking sustainable potential of photo-aged polyolefins in land and sea: An urchin-like Ru/CeO catalytic strategy for production of hydrocarbon fuels and waxes.","sub":["2"]}
摘要(中文译文)
将视角从催化剂转向危险废物的内在物理化学状态，我们揭示了一种大分子催化范式，其中聚合物基体的老化诱导修饰决定了其催化氢解路径。通过利用太阳光作为强大驱动力，光老化过程将“含氧官能团、微裂纹和链交联”的特征性改变植入聚烯烃中，形成特定的薄弱环节，从而重新编程其升级回收选择性。借助定制的海胆状Ru/CeO催化剂，我们展示了来自实验室光老化塑料的差异化产物流：空气老化聚乙烯生成熔程为94.7-101.8 °C的窄分布蜡（PDI = 1.64），而湿老化聚乙烯则产生富含燃料范围烃类的液态烷烃流（C5-C17）。这种路径分叉延伸至聚苯乙烯的氢解，其中老化塑料升级为脂肪族烷烃和饱和环烷烃等潜在航空燃料组分。与原始塑料相比，光老化微塑料首次从一种新兴的全球危害物转变为高价值燃料和化学品的可持续来源。
Abstract
Shifting the lens from the catalyst to the intrinsic physicochemical state of hazardous wastes, we unveil a macromolecular catalysis paradigm where the aging-induced modifications in polymer substrates dictate their catalytic hydrogenolysis pathways. By harnessing sunlight as a powerful engine, photo-aging process implants the signature alterations of "oxygenated functional groups, microcracks, and chain crosslinks" into polyolefins, creating specific weak links that reprogram their upcycling selectivity. With a tailored urchin-like Ru/CeO catalyst, we demonstrate divergent product streams from laboratory photoaged plastics: air-aged polyethylene yields narrow-distribution wax with a melting range of 94.7-101.8 °C (PDI = 1.64), whereas wet-aged polyethylene produces a liquid alkane stream (C5-C17) rich in fuel-range hydrocarbons. This pathway divergence extends to the hydrogenolysis of polystyrene, where aged plastics upgrades into potential aviation-fuel components of aliphatic alkanes and saturated cycloalkanes. Compared with the pristine plastics, the photo-aged microplastics were for the first time transformed from an emerging global hazard into a sustainable source for high-value fuels and chemicals.
如何引用
AMA
Zeyuan Zhu, Dong Liang, Na Zhu, Junhong Liu, Qiuyi Zhang, Lei Wang, et al. {"_":"Unlocking sustainable potential of photo-aged polyolefins in land and sea: An urchin-like Ru/CeO catalytic strategy for production of hydrocarbon fuels and waxes.","sub":["2"]}. Journal of hazardous materials. 2026; doi:10.1016/j.jhazmat.2026.142694.
APA
Zeyuan Zhu, Dong Liang, Na Zhu, Junhong Liu, Qiuyi Zhang, Lei Wang, et al (2026). {"_":"Unlocking sustainable potential of photo-aged polyolefins in land and sea: An urchin-like Ru/CeO catalytic strategy for production of hydrocarbon fuels and waxes.","sub":["2"]}. Journal of hazardous materials. https://doi.org/10.1016/j.jhazmat.2026.142694
GB/T 7714
Zeyuan Zhu, Dong Liang, Na Zhu, Junhong Liu, Qiuyi Zhang, Lei Wang, et al. {"_":"Unlocking sustainable potential of photo-aged polyolefins in land and sea: An urchin-like Ru/CeO catalytic strategy for production of hydrocarbon fuels and waxes.","sub":["2"]}[J]. Journal of hazardous materials, 2026 doi:10.1016/j.jhazmat.2026.142694.
在 PubMed增强版 阅读全文
翻译全文 · AI 文献问答 · PDF 原文下载 · 引用导出