Advances in lower olefin production over cobalt-based catalysts via the Fischer-Tropsch process

The increasing demand in the chemical commodity industry and recognition of global warming, necessitates a continuous search for alternative feedstocks and processes that can fulfil the worlds demand. In this regard, the thermocatalytic conversion of carbon monoxide to high value-added chemicals have achieved significant breakthroughs. The present work focuses on providing a critical review of the most recent achievements in direct carbon monoxide hydrogenation to light olefins, describing the modified Fischer-Tropsch pathway with the influence of structural-relationship performances focusing on various influencing parameters, i.e. promoters, supports, preparation and pre-treatments routes. Also, mechanisms over these catalysts are discussed. To date, it is concluded that the Co2C quadrangular nanoprism phase with (101) and (020) exposed facets, play a pivotal role in the high lower-olefin yield. More efforts are needed to reach better control of the surface phases and interactions within the functionalities of the catalyst, as well as the understanding of the reaction mechanism to avoid deactivation. The challenges remaining in this field are also analysed and future directions associated with direct synthesis of olefins from syngas are outlined. This work provides effective strategies for future Fischer-Tropsch to olefins (FTO) catalyst design to effectively enhance the carbon efficiency of the FTO process.

Automated summary

This paper provides a critical review of the recent achievements in direct carbon monoxide hydrogenation to light olefins, highlighting the influencing factors and catalyst mechanisms. It also outlines future research directions in this field.