English
 
User Manual Privacy Policy Disclaimer Contact us
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT

Released

Journal Article

In Situ X-ray Diffraction Study of Co–Al Nanocomposites as Catalysts for Ammonia Decomposition

MPS-Authors
/persons/resource/persons132875

Gu,  Dong
Research Department Schüth, Max-Planck-Institut für Kohlenforschung, Max Planck Society;

/persons/resource/persons59100

Weidenthaler,  Claudia
Research Group Weidenthaler, Max-Planck-Institut für Kohlenforschung, Max Planck Society;

External Ressource
No external resources are shared
Fulltext (public)
There are no public fulltexts stored in PuRe
Supplementary Material (public)
There is no public supplementary material available
Citation

Gu, Y.-Q., Fu, X.-P., Du, P.-P., Gu, D., Jin, Z., Huang, Y.-Y., et al. (2015). In Situ X-ray Diffraction Study of Co–Al Nanocomposites as Catalysts for Ammonia Decomposition. The Journal of Physical Chemistry C, 119(30), 17102-17110. doi:10.1021/acs.jpcc.5b02932.


Cite as: http://hdl.handle.net/11858/00-001M-0000-0028-3319-C
Abstract
Co–Al nanocomposite materials as active and stable catalysts for ammonia decomposition have been synthesized by a one-pot evaporation-induced self-assembly method. The catalysts were characterized by various techniques including powder X-ray diffraction (XRD), X-ray absorption fine structure (XAFS), X-ray photoelectron spectroscopy (XPS), N2 adsorption/desorption, and transmission/scanning electron microscopy (TEM/SEM). Especially, in situ XRD under catalytic reaction conditions was performed, and metallic Co with a cubic structure was identified to be most probably the active crystalline phase for the decomposition of ammonia; also, contribution of CoO to the catalytic activity cannot be excluded. Most importantly, the introduction of alumina can significantly suppress the agglomeration of the active metallic Co phase and thus maintain the high activity of the cobalt catalyst.