A review on support design strategies for platinum-based catalysts in nonoxidative propane dehydrogenation: toward enhanced stability and anti-deactivation

Nonoxidative propane dehydrogenation (PDH) is a vital process in meeting the increasing demand for propylene. Platinum-based catalysts have become a research hotspot in this field due to their high propylene selectivity and catalytic activity; however, their stability is hindered by sintering, coking, and other deactivation issues. As a core component of platinum-based catalysts, the support can remarkably improve the catalyst’s resistance to deactivation by tailoring key properties, including acidity/basicity, morphology, metal-support interactions, and promoter anchoring sites. This paper systematically reviews the design principles and strategies for platinum-based catalyst supports, with a focus on the mechanisms through which the structural designs of oxide supports, zeolite supports, layered double hydroxide (LDH)-derived supports, and novel composite supports influence the stability of the nonoxidative propane dehydrogenation reaction. By integrating experimental data and theoretical calculations, this study examines the intrinsic mechanisms by which support optimization enhances catalyst stability from three key aspects: sintering resistance, coking resistance, and electronic effect regulation. Finally, the current challenges in support design are summarized, and future development directions for efficient and stable supports for platinum-based catalysts are outlined, offering a theoretical basis and technical guidance for the industrial upgrading of PDH processes.