Química Nova | |
Síntese, caracterização e estudo das propriedades catalíticas e magnéticas de nanopartículas de Ni dispersas em matriz mesoporosa de SiO2 | |
Neftalí L. V. Carreño2  Edson R. Leite2  Luís P. S. Santos2  Paulo N. Lisboa-filho2  Elson Longo2  Geórgia C. L. Araújo1  Andersson Barison1  Antônio G. Ferreira1  Antoninho Valentini1  Luiz Fernando D. Probst1  | |
[1] ,Universidade Federal de São Carlos Centro Multidisciplinar de Desenvolvimento de Materiais Cerâmicos São Carlos SP | |
关键词: nanoparticles; catalyst; magnetism; | |
DOI : 10.1590/S0100-40422002000600010 | |
来源: SciELO | |
【 摘 要 】
Nickel nanoparticles supported on amorphous silica ceramic matrix were synthesized by the polymeric precursor method. The nanostructure was characterized by NMR, BET, XRD, SEM, TEM, and flame atomic absorption spectrometry techniques. It was observed a dependence of the crystallite size on the thermal annealing, under a N2 atmosphere. The materials presented a high catalytic activity and selectivity upon the beta-pinene hydrogenation reaction. The magnetic hystereses were also correlated with the morphology of the processed material.
【 授权许可】
CC BY-NC
All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License
【 预 览 】
Files | Size | Format | View |
---|---|---|---|
RO202005130061105ZK.pdf | 1685KB | download |