| abstract |
Alumina support compositions containing at least 0.1% by weight of silica are described. The alumina support is characterized by a pore volume greater than 0.60 cm3 / g, a median pore size ranging from about 70 to about 120, a pore size distribution so that at least 90% of the total pore volume falls within the range of about 20 to about 250, and an amplitude of the pore size distribution of not less than about 40. The alumina compositions of the present invention exhibit a primary peak mode in a pore diameter smaller than the median pore diameter. Catalysts prepared from alumina supports and the processes for preparing and using the supports and catalysts are also provided. |