Three platinum group metals (PGMs), platinum (Pt), palladium (Pd), and rhodium (Rh), are key components in automotive catalytic convertors, playing a pivotal role in controlling harmful emissions. The recycling and recovery of Pt, Pd, and Rh from spent automotive catalysts (SACs) have gained increasing attention as essential measures to mitigate resource depletion, supply risks, and environmental impacts. Due to the growing demand for automobiles and increasingly stricter environmental regulations, a substantial amount of spent automotive catalysts is generated annually, leading to increased interest in their efficient recycling and recovery of the PGMs they contain. Hydrometallurgical processes, particularly chloride leaching and ion exchange, have emerged as promising methods for efficient PGM extraction and separation from these discarded catalysts.

中文翻译：

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通过联合氯化物浸出和离子交换从废汽车催化剂中回收 Pt、Pd 和 Rh：综述


铂 (Pt)、钯 (Pd) 和铑 (Rh) 三种铂族金属 (PGM) 是汽车催化转化器的关键成分，在控制有害排放方面发挥着关键作用。从废汽车催化剂 (SAC) 中回收和回收 Pt、Pd 和 Rh 作为缓解资源枯竭、供应风险和环境影响的重要措施越来越受到关注。由于汽车需求的不断增长和环境法规的日益严格，每年都会产生大量的废汽车催化剂，这导致人们对其所含铂族金属的有效回收和回收越来越感兴趣。湿法冶金工艺，特别是氯化物浸出和离子交换，已成为从这些废弃催化剂中有效提取和分离铂族金属的有前途的方法。