Chemical recycling and upcycling offer promising approaches for the management of plastic wastes. Hydrodeoxygenation (HDO) is one of the appealing ways for conversion of oxygen‐containing plastic wastes, including PET, PBT, PC, PPO, and PEEK, into cyclic alkanes and aromatics in high yields under mild reaction conditions. The challenge lies in achieving C‐O activation while preserving C‐C bonds. In this review, we highlight the recent advancements in catalytic strategies and catalysts for the conversion of these oxygen‐containing plastic wastes into cycloalkanes and aromatics. The reaction systems, including multi‐step routes, direct HDO and transfer HDO methods, are exemplified. The design and performance of HDO catalysts are systematically summarized and compared. We comprehensively discuss the functions of the catalysts’ components, reaction pathway and mechanism to gain insights into the HDO process for efficient valorization of oxygen‐containing plastic wastes. Finally, we provide perspectives for this field, with specific emphasis on the non‐noble metal catalyst design, selectivity control, reaction network and mechanism studies, mixed plastic wastes management and product functionalization. We anticipate that this review will inspire innovations on the catalytic process development and rational catalyst design for the HDO of oxygen‐containing aromatic plastics to establish a low‐emission circular economy.

中文翻译：

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含氧芳香塑料废物加氢脱氧成环烷烃和芳香烃

化学回收和升级回收为塑料废物的管理提供了有前景的方法。加氢脱氧 (HDO) 是将含氧塑料废物（包括 PET、PBT、PC、PPO 和 PEEK）在温和的反应条件下以高产率转化为环烷烃和芳烃的一种颇具吸引力的方法。挑战在于在保留 C-C 键的同时实现 C-O 活化。在这篇综述中，我们重点介绍了将这些含氧塑料废物转化为环烷烃和芳烃的催化策略和催化剂的最新进展。举例说明了反应体系，包括多步路线、直接HDO法和转移HDO法。对HDO催化剂的设计和性能进行了系统的总结和比较。我们全面讨论了催化剂组分的功能、反应途径和机制，以深入了解 HDO 工艺，以有效地增值含氧塑料废物。最后，我们提供了该领域的前景，特别强调非贵金属催化剂设计、选择性控制、反应网络和机理研究、混合塑料废物管理和产品功能化。我们预计本次综述将激发含氧芳香族塑料 HDO 催化工艺开发和合理催化剂设计的创新，以建立低排放循环经济。