Effect of alumina particle size on Ni/Al2O3 catalysts for p-nitrophenol hydrogenation

Abstract

Abstract: The catalytic hydrogenation of p-nitrophenol to p-aminophenol was investigated over Ni/Al2O3 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/Al2O3 catalyst, but little influence on the selec-tivity. At a comparable amount of Ni loading, the catalytic activity of Ni/Al2O3 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/Al2O3 catalyst. The supported nickel catalyst 10.3Ni/Al2O3-3 improves the life span of the membrane by reducing fouling on the membrane surface compared to nano-sized nickel.

Key words: p-nitrophenol, catalytic hydrogenation, p-aminophenol, Ni/Al2O3 catalysts, ceramic membrane filtration

摘要： The catalytic hydrogenation of p-nitrophenol to p-aminophenol was investigated over Ni/Al2O3 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/Al2O3 catalyst, but little influence on the selec-tivity. At a comparable amount of Ni loading, the catalytic activity of Ni/Al2O3 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/Al2O3 catalyst. The supported nickel catalyst 10.3Ni/Al2O3-3 improves the life span of the membrane by reducing fouling on the membrane surface compared to nano-sized nickel.

关键词: p-nitrophenol;catalytic hydrogenation;p-aminophenol;Ni/Al₂O₃ catalysts;ceramic membrane filtration

CHEN Rizhi, DU Yan, XING Weihong, XU Nanping. Effect of alumina particle size on Ni/Al₂O₃ catalysts for p-nitrophenol hydrogenation[J]. .

陈日志, 杜艳, 邢卫红, 徐南平. 载体氧化铝的粒径对对硝基苯酚加氢催化剂Ni/Al₂O₃的影响[J]. CIESC Journal.

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Effect of alumina particle size on Ni/Al₂O₃ catalysts for p-nitrophenol hydrogenation

载体氧化铝的粒径对对硝基苯酚加氢催化剂Ni/Al₂O₃的影响

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