Study of Direct Conversion of Syngas to Light Olefins over Fe based carbon sphere catalysts

摘要

Light olefins (C_2 to C_4) are extensively used in the chemical industry as building blocks to synthesize a wide range of products such as polymers, solvents, drugs, etc. Compared with or the traditional steam cracking of crude oil or two-step MTO route, the direct conversion of syngas to light olefins via Fischcr-Tropsch synthesis (FTO) route, without intermediate steps, sounds a promising solution. So far, many efforts [1,2] have been done to develop the catalysts to promote light olefins selectivity in the FTO reaction synthesis. Nanocarbon materials as the novel supports have exhibited the excellent selectivity of light olefins, however, the low mechanical stability iron supported catalyst hinders the large scale of application. In the present study, we use a simple and low-cost method to prepare Fe based carbon sphere for FTO reaction. The catalyst shows good mechanical stability and high selectivity for light olefins.