| abstract |
The invention belongs to the field of preparation of liquid fuel and co-production of low-carbon olefin by synthesis gas, and particularly relates to a method for preparing liquid fuel and co-production of low-carbon olefin by direct conversion of a catalyst and synthesis gas. The synthesis gas is used as a reaction raw material, and the reaction is carried out on a fixed bed or a moving bed, the catalyst contains A and B components, the component A is an active metal oxide, and the component B is one or more than two of a molecular sieve with an FER layer structure or a molecular sieve with a metal modified FER layer structure; the distance between the geometric centers of the catalyst A and the catalyst B is 2nm-20 mm; the weight ratio of the catalyst A to the catalyst B is 0.1-20. The pressure of the synthesis gas is 0.1-6MPa, the reaction temperature is 300- ‑1 . The main product of the reaction is octylThe gasoline with high value of the octane number produces olefin in parallel, and meanwhile, the selectivity of the byproduct methane is low (less than 10 percent), so that the method has good application prospect. |