Abstract At present, the total resources of C4/C5 olefins are large and there are few routes for the efficient utilization with the development of China’s refining and chemical integration and the rapid expansion of coal-to-olefin production capacity. Driven by rising demand for propylene worldwide, olefin catalytic cracking technology has broad prospects for converting low valued light olefins into high value-added propylene and ethylene. From the perspectives of olefin cracking catalysts and processes at home and abroad, the latest advances in olefin catalytic cracking technology are introduced in detail. It is believed that the key to the olefin catalytic cracking technology lies in the research and development of high-performance catalysts. Different technical routes also have their own characteristics. The R&D of the olefin catalytic cracking technology is also forecasted. The development of both highly selective catalysts and large-scale technologies needs to be carried out in depth in the future.
