The stability of the catalyst was another important indicator for the industrial catalyst. In a 100 hour stability test, the CO2 and toluene conversion maintained stable with time on stream (Fig. ), with the undesired C1-C7 products selectivity suppressed to ~25% and jet fuel maintained at ~75%. All of the above catalytic results demonstrated that the catalyst works efficiently in converting CO2 to jet fuels and suppressing C1-C7 hydrocarbons production in the meantime. The proximity of tandem catalysts could modulate the products distribution by altering the migration efficiency of intermediate products . With the appropriate increase of proximity of FeMnK and Z5 part (two-layer to granule mixing, Fig. ), the selectivity of C8-C16 products gradually increased from 67.7% to 75.0%, and the selectivity of C2-C7 showed an opposite trend. When focusing on the specific products distribution of the tandem catalysts with different packing modes (Fig. ), it could be observed that the main components in C8-C16 products are aromatics with the carbon number of 8-12. Besides, with the increase of the proximity of the two functions, the C9 selectivity decreases from 39.8% of two layered mode (FeI3Z5) to 33.0% of gradual mixing mode (Fe&3Z5). Oppositely, the C10 selectivity increased from 9.9% to 21.4%.