Preparation of Mesoporous Molecular Sieve Supported CoOx Catalyst and Its Improvement on the Performance of Synthetic Gas to Aviation Kerosene

Global demand for aviation kerosene has grown steadily over the past few decades. The preparation of aviation kerosene from syngas through Fischer–Tropsch synthesis is a promising alternative process for aviation kerosene production. Developing a new high-performance catalyst to achieve one-step high-selectivity preparation of aviation kerosene from syngas has been a cutting-edge scientific research issue that has attracted widespread attention in recent years. In this work, different series of Co/Al-SBA-15 catalysts were prepared by melt infiltration method and impregnation method using highly ordered mesoporous Al-SBA-15 molecular sieve as carriers, taking advantage of its high specific surface area and good diffusivity, and the cobalt species existing in the catalysts were characterized and studied. The Co/Al-SBA-15 catalyst prepared by melt infiltration method shows smaller CoO_x nanoparticle size, more suitable acid properties and pore properties, and shows better catalytic performance in the preparation of aviation kerosene from synthetic gas.