Synthesis, Characterization, and Catalytic Performance of Highly Dispersed Supported Nickel Catalysts from Ni–Al Layered Double Hydroxides

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), temperatur...

Full description

Saved in:
Bibliographic Details
Published inIndustrial & engineering chemistry research Vol. 50; no. 24; pp. 13717 - 13726
Main Authors Wang, Jia, Fan, Guoli, Wang, Hui, Li, Feng
Format Journal Article
LanguageEnglish
Published Washington, DC American Chemical Society 21.12.2011
Subjects
Aluminides
Applied sciences
Catalysis
Catalysts
Catalytic reactions
Chemical engineering
Chemistry
Dispersions
Exact sciences and technology
General and physical chemistry
Intermetallic compounds
Intermetallics
Kinetics, Catalysis, and Reaction Engineering
Nickel
Nickel base alloys
Nickel compounds
Reactors
Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry
Catalytic reaction
Catalyst
Online AccessGet full text

Cover

More Information
Summary: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.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:0888-5885
1520-5045
DOI:10.1021/ie2015087