Advances in Dehydrogenation of Ethane/Propane in the CO₂ Atmosphere on Pt-Based Catalysts.

Ethylene and propylene serve as the basic platform chemicals in the chemical industry. Research on their production has garnered significant interest. One of them is the dehydrogenation of light alkanes with the oxidative promotion of CO₂. This process can simultaneously produce light olefins and achieve resource utilization of CO₂. Pt-based catalysts, extensively used in the direct dehydrogenation of light alkanes, are expected to show activity potential in the CO₂ oxidative dehydrogenation (CO₂-ODH) of light alkanes. However, research on Pt-based catalysts for CO₂-ODH of light alkanes remains limited, and no systematic review has been reported yet. Here, the advancements in Pt-based catalysts for the CO₂-ODH of ethane and propane are reviewed, including (i) reaction mechanisms, (ii) rational design strategies for efficient and stable Pt-based catalysts, and (iii) emerging reaction processes and optimization methods. Perspectives on fundamental challenges and future research are proposed. Among them, machine learning-guided design of Pt-based catalysts will be an important research direction in the future.