[article]
| Titre : |
Synthesis, characterization, and catalytic performance of highly dispersed supported nickel catalysts from Ni – Al layered double hydroxides |
| Type de document : |
texte imprimé |
| Auteurs : |
Jia Wang, Auteur ; Guoli Fan, Auteur ; Hui Wang, Auteur |
| Année de publication : |
2012 |
| Article en page(s) : |
pp. 13717–13726 |
| Note générale : |
Chimie industrielle |
| Langues : |
Anglais (eng) |
| Mots-clés : |
Catalysts Hydroxides |
| Résumé : |
Highly dispersed nickel nanoparticles were successfully prepared by reduction of Ni–Al layered double hydroxide precursor (NiAl-LDH) supported on nitric acid modified carbon nanotubes (HCNTs). The physicochemical properties of materials were investigated by powder X-ray diffraction (XRD), temperature programmed reduction (TPR), temperature programmed decomposition (TPDE), temperature programmed desorption (TPD), transmission electron microscopy (TEM), low-temperature nitrogen adsorption–desorption experiments, and X-ray photoelectron spectroscopy (XPS). The results revealed that in the synthesis process of NiAl-LDH and HCNTs composite, l-cysteine could improve the attachment of NiAl-LDH on the HCNTs as bridging linker and inhibit the growth of NiAl-LDH crystallites, thus leading to the formation of highly dispersed and uniform Ni nanoparticles with the small particle sizes. Compared with HCNTs-supported Ni catalyst prepared without the addition of l-cysteine, this highly dispersed Ni catalyst exhibited enhanced catalytic performance in liquid phase hydrogenation of o-chloronitrobenzene to o-chloroaniline. |
| DEWEY : |
660 |
| ISSN : |
0888-5885 |
| En ligne : |
http://pubs.acs.org/doi/abs/10.1021/ie2015087 |
in Industrial & engineering chemistry research > Vol. 50 N° 24 (Décembre 2011) . - pp. 13717–13726
[article] Synthesis, characterization, and catalytic performance of highly dispersed supported nickel catalysts from Ni – Al layered double hydroxides [texte imprimé] / Jia Wang, Auteur ; Guoli Fan, Auteur ; Hui Wang, Auteur . - 2012 . - pp. 13717–13726. Chimie industrielle Langues : Anglais ( eng) in Industrial & engineering chemistry research > Vol. 50 N° 24 (Décembre 2011) . - pp. 13717–13726
| Mots-clés : |
Catalysts Hydroxides |
| Résumé : |
Highly dispersed nickel nanoparticles were successfully prepared by reduction of Ni–Al layered double hydroxide precursor (NiAl-LDH) supported on nitric acid modified carbon nanotubes (HCNTs). The physicochemical properties of materials were investigated by powder X-ray diffraction (XRD), temperature programmed reduction (TPR), temperature programmed decomposition (TPDE), temperature programmed desorption (TPD), transmission electron microscopy (TEM), low-temperature nitrogen adsorption–desorption experiments, and X-ray photoelectron spectroscopy (XPS). The results revealed that in the synthesis process of NiAl-LDH and HCNTs composite, l-cysteine could improve the attachment of NiAl-LDH on the HCNTs as bridging linker and inhibit the growth of NiAl-LDH crystallites, thus leading to the formation of highly dispersed and uniform Ni nanoparticles with the small particle sizes. Compared with HCNTs-supported Ni catalyst prepared without the addition of l-cysteine, this highly dispersed Ni catalyst exhibited enhanced catalytic performance in liquid phase hydrogenation of o-chloronitrobenzene to o-chloroaniline. |
| DEWEY : |
660 |
| ISSN : |
0888-5885 |
| En ligne : |
http://pubs.acs.org/doi/abs/10.1021/ie2015087 |
|
Synthesis, characterization, and catalytic performance of highly dispersed supported nickel catalysts from Ni – Al layered double hydroxides in Industrial & engineering chemistry research, Vol. 50 N° 24 (Décembre 2011)
