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The catalytic hydrogenation of p-nitrophenol to p-aminophenol was investigated over Ni/Al_2O_3 catalyst on alumina support with different particle size. It is found that support particle size has significant influences on physiochemical properties and catalytic activity of the resulting Ni/Al_2O_3 catalyst, but little influence on the selec- tivity. At a comparable amount of Ni loading, the catalytic activity of Ni/Al_2O_3 prepared with alumina support of smaller particle size is lower. The reduction behavior of the catalyst is a key factor in determining the catalytic ac- tivity of Ni/Al_2O_3 catalyst. The supported nickel catalyst 10.3Ni/Al_2O_3-3 improves the life span of the membrane by reducing fouling on the membrane surface compared to nano-sized nickel.
The catalytic hydrogenation of p-nitrophenol to p-aminophenol was investigated over Ni / Al 2 O 3 catalyst on alumina support with different particle size. It is found that supporting particle size has significant influences on physiochemical properties and catalytic activity of the resulting Ni / Al 2 O 3 catalyst. but little influence on the selec- tivity. At a comparable amount of Ni loading, the catalytic activity of Ni / Al_2O_3 prepared with alumina support of smaller particle size is lower. The reduction behavior of the catalyst is a key factor in determining the catalytic ac - tivity of Ni / Al_2O_3 catalyst. The supported nickel catalyst 10.3Ni / Al_2O_3-3 improves the life span of the membrane by reducing fouling on the membrane surface compared to nano-sized nickel.