A catalyst support, a supported group VIII metal catalyst and a precursor thereof, processes for their preparation, and a use of the supported group VIII metal catalyst

摘要

A process for preparing a catalyst support or a supported Group VIII metal catalyst or a precursor of the supported Group VIII metal catalyst, the process comprising: (a) exerting mechanical power on a mixture comprising a refractory oxide and a first liquid to obtain a dough in which the ratio of the particle size is 0.02 to 0.5, (b) admixing the dough obtained from step (a) with a second liquid to obtain a slurry, (c) shaping and drying the slurry obtained from step (b), and (d) calcining, Wherein if a supported Group VIII metal catalyst or precursor is prepared, a precursor compound of the Group VIII metal or the Group VIII metal itself is present as an additional component in step (a) or step (b), and that the catalyst or supported Group VIII metal catalyst does not contain cerium.