| abstract |
The present invention is directed to a process for producing sulfur tolerant alumina, which comprises from one or more water soluble aluminum salts, each containing an aluminum cation or aluminum anion and a counter-charged counter ion, in an aqueous medium. Forming an aluminum hydrate, contacting the aluminum hydrate with a silica precursor in the aqueous medium and in the presence of a counter ion of the one or more aluminum salts, silica from the aqueous medium Isolating the aluminum hydrate particles in contact with the precursor and firing the aluminum hydrate particles in contact with the silica precursor to form particles of the sulfur resistant alumina. |