화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Korean Journal of Chemical Engineering, Vol.28, No.3, 717-722, March, 2011
DOI10.1007/s11814-010-0424-z  Export Citation
Preparation of well-dispersed and anti-oxidized Ni nanoparticles using polyamioloamine dendrimers as templates and their catalytic activity in the hydrogenation of p-nitrophenol to p-aminophenol
Zhenye Ma1, 2, †, Rujun Wu1, Qiaorong Han1, Rizhi Chen2, and Zhenggui Gu1
  • 1College of Chemistry and Material Science, Nanjing Normal University, Nanjing, Jiangsu 210097, China
  • 2State Key Laboratory of Materials-Oriented Chemical Engineering; College of Chemistry and Chemical Engineering, Nanjing University of Technology, Nanjing 210009, China
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p-Aminophenol was synthesized by catalytic hydrogenation of p-nitrophenol on Ni nanoparticles prepared by a chemical reduction method using polyamidoamine (PAMAM) dendrimers as templates. The as-prepared Ni nanoparticles were characterized by XRD, LRS, EDS, FTIR, FESEM, HRTEM and N2 sorption analysis. Smaller-sized, better-dispersed and more active Ni nanoparticles can be successfully achieved using PAMAM dendrimers as templates. Analysis results show the as-prepared Ni nanoparticles are pure f.c.c. nickel. In hydrogenation reactions of p-nitrophenol, Ni nanoparticles show higher catalytic activity than that of Ni nanoparticles prepared in the absence of PAMAM dendrimers. The weight ratio of PAMAM/Ni2+ is proved to be an important parameter on the catalytic activity of Ni nanoparticles and the optimal ratio is 15%. The reason proposed for higher catalytic activity of Ni nanoparticles is a combination effect of smaller particle size, better dispersion and more active Ni nanoparticles.
Keywords:Ni Nanoparticles;PAMAM Dendrimers;Hydrogenation;p-Nitrophenol;Catalytic Activity
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