Advances in the synthesis of durable Pt-zeolite catalysts for propane dehydrogenation
摘要
Driven by the global energy transition and the rapid expansion of shale gas exploitation, propane dehydrogenation (PDH) has become the leading technology for on-purpose propylene production. This process is widely recognized for its abundant feedstock supply, high propylene selectivity, and cost-effective operation. However, conventional Pt-based catalysts in industrial applications suffer from rapid deactivation due to metal sintering and coke deposition under high-temperature conditions. Therefore, improving the high-temperature stability of PDH catalysts remains a significant scientific and technological challenge. In this context, this review comprehensively summarizes recent advances in the design and synthesis of coke- and sintering-resistant Pt-zeolite catalysts for PDH. The synthetic methodologies are systematically classified into six distinct categories according to the nature of the interaction between Pt species and the zeolite support. For each category, the synthesis concept, structural characteristics, and catalytic performance are thoroughly discussed. The established synthesis-structure-performance relationships provide pivotal guidance for the rational design of next-generation high-performance PDH catalysts. Finally, the review concludes with a perspective on remaining challenges and potential future research directions.