The invention provides an aluminum
oxide carrier and a preparation method thereof. The aluminum
oxide carrier takes a mixture prepared by mixing pseudo-
boehmite powder prepared by the
carbonization method and pseudo-
boehmite powder prepared by the aluminum
sulfate method according to a weight proportion of 1:0.1 to 5 as a precursor and a complex acid as a peptizing agent; substances such as
zirconium,
titanium,
silicon, alkali metals, alkaline-earth metals, rare-earth metals,
carbon black, and the like, are added during kneading process; then the aluminum
oxide carrier is obtained after forming,
drying and
roasting. The physical properties of the carrier are as follows: pore volume is 0.4 to 1.2ml / g; specific surface area is 180 to 370m<2> / g; pores with the
diameter being more than 100nm accounts for more than 90 percent of total pore volume; the amount of B acid is 0.1 to 0.3mmol / g; the amount of L acid is 0.2 to 0.5mmol / g. The carrier is especially applicable to the preparation of 1, 4-
butanediol catalysts in the two-stage hydrogenation catalytic synthesis of 1, 4-butynediol.