▎ 摘　　要

NOVELTY - Composite catalyst comprises component I and component II. The active component of component I is a metal oxide, and component II is a metal-modified MFI structure molecular sieve. The mixing method of the component I and the component II is mechanical mixing, or filling in separate beds, and placing the component II at downstream of the component I according to the flow direction of the raw material. The metal oxides in the component I comprising at least one of MnOy, MnCrxOy, MnAlxOy, MnZrxOy, MnInxOy, ZnMnxOy, ZnCrxOy, ZnAlxOy, ZnCrxAlzOy, ZnGaxOy, zinc oxide, cerium dioxide, ZnGaxAlzOy,In2O3, ZnInxOy, CeZrxOy, CoAlxOyand/or FeAlxOy. The value range of x is 0.01-100, the value range of z is 0.01-100, and the value range of y is 0.001-1000. The metal-modified MFI structure molecular sieve of the component II, the type of modified metal comprising at least one of zinc, gallium, nickel, iron, copper and/or indium. USE - The composite catalyst is useful for directly converting synthesis gas into gasoline (claimed). ADVANTAGE - The composite catalyst can carry synthesis gas conversion reaction in fixed bed or moving bed with high product yield and selectivity, reach selectivity of liquid fuel to 50-80%, and the selectivity of aromatics in C5-C11 is lower than 35% and selectivity of by-product methane is lower than 15%. DETAILED DESCRIPTION - Composite catalyst comprises component I and component II. The active component of component I is a metal oxide, and component II is a metal-modified MFI structure molecular sieve. The mixing method of the component I and the component II is mechanical mixing, or filling in separate beds, and placing the component II at downstream of the component I according to the flow direction of the raw material. The metal oxides in the component I comprising at least one of MnOy, MnCrxOy, MnAlxOy, MnZrxOy, MnInxOy, ZnMnxOy, ZnCrxOy, ZnAlxOy, ZnCrxAlzOy, ZnGaxOy, zinc oxide, cerium dioxide, ZnGaxAlzOy, In2O3, ZnInxOy, CeZrxOy, CoAlxOyand/or FeAlxOy. The value range of x is 0.01-100, the value range of z is 0.01-100, and the value range of y is 0.001-1000. The metal-modified MFI structure molecular sieve of the component II, the type of modified metal comprising at least one of zinc, gallium, nickel, iron, copper and/or indium. The metal modification method comprising at least one of impregnation method, ion exchange method, hydrothermal method and/or solid phase ion exchange method. An INDEPENDENT CLAIM is also included for directly converting synthesis gas into gasoline, comprising (i) taking synthesis gas as reaction raw material and carrying out conversion reaction on fixed bed or moving bed, where the synthesis gas is hydrogen/carbon monoxide mixed gas, where the ratio of hydrogen/carbon monoxide is 0.2-3.5, the pressure of the synthesis gas is 0.5-10 MPa, the reaction temperature is 300-600℃ and the space velocity is 300-15000ml/gcat/h.