Abstract: Against the backdrop of continuously growing global propylene demand and the drive toward carbon neutrality, propane dehydrogenation (PDH) has emerged as a key route for propylene production due to its significant energy-saving advantages. In recent years, critical breakthroughs have been achieved in both catalyst design and reaction engineering: Pt-based catalysts achieve high selectivity and long-term stability through dynamic active site regulation; the zeolite confinement strategy effectively suppresses sintering; non-noble metal Co-based catalysts maintain high activity while reducing costs. In terms of reaction engineering, the chemical looping oxygen supply coupled with hydrogen combustion technology has broken through the thermodynamic equilibrium limitation, enabling efficient energy recycling, and intelligent integrated processes have significantly reduced carbon emissions. Future efforts should focus on directions such as multiscale simulation, reactor-catalyst synergistic design, and green electricity coupling to promote the development of PDH technology towards low carbonization and high performance, thereby supporting the green transformation of the olefin industry.

Key words: propane dehydrogenation, propylene, catalyst