Abstract
Presently, almost all the olefins are produced from petroleum by thermal cracking. Therefore, it is desired to develop novel routes for olefin production from other resources. Olefin synthesis from synthesis gas is a most promising route because syngas can be obtained from many types of carbon resources including natural gas and biomass. In this study, the fixed bed reactor is superior at production of lower olefins than the slurry reactor. These results suggest that solvent less condition should suppress the secondary reactions of olefins formed such as hydrogenation and chain growth reactions in slurry reactor. Then the selectivity to the lower olefins can be improved by the addition of manganese. These results suggest that added manganese species should suppress the secondary reactions of olefins formed such as hydrogenation and chain growth reactions.