Design of efficient bifunctional catalysts for direct conversion of syngas into lower olefins via methanol/dimethyl ether intermediates.

ABSTRACT: The direct conversion of syngas into lower olefins is a highly attractive route for the synthesis of lower olefins. The selectivity of lower olefins via the conventional Fischer-Tropsch (FT) synthesis is restricted to ∼60% with high CH₄ selectivity due to the limitation by the Anderson-Schulz-Flory (ASF) distribution. Here, we report the design of bifunctional catalysts for the direct conversion of syngas into lower olefins with selectivity significantly breaking the ASF distribution. The selectivity of C₂-C₄ olefins reached 87% at a CO conversion of 10% and was sustained at 77% by increasing CO conversion to 29% over a bifunctional catalyst composed of Zn-doped ZrO₂ nanoparticles and zeolite SSZ-13 nanocrystals. The selectivity of CH

SUBMITTER: Liu X 

PROVIDER: S-EPMC5969498 | biostudies-literature | 2018 May

REPOSITORIES: biostudies-literature