TY - JOUR
T1 - X-ray diffraction and Mossbauer characterization of Raney Fe-Ni catalysts
AU - Zeifert, B. H.
AU - Salmones, J.
AU - Hernández, J. A.
AU - Reynoso, R.
AU - Nava, N.
AU - Reguera, E.
AU - Cabañas-Moreno, J. G.
AU - Aguilar-Ríos, G.
N1 - Funding Information:
This work has been sponsored by DEPI-IPN (project 970146), FIES-IMP (project 95-109-III) and CONACyT (4254A).
PY - 2000
Y1 - 2000
N2 - Raney type catalysts were prepared by means of a two step procedure: (1) Mechanical alloying of the metals and, (2) alkaline aluminum leaching. Mechanical alloying is a novel alternative related to the synthesis of skeletal Ni catalysts. X-ray diffraction, and Mossbauer spectroscopies were performed for catalysts characterization. Binary Al-Ni and ternary Al-Ni-Fe alloys were produced by mechanical alloying from pure metallic powders; in particular, the intermetallic β-(AlNi) phase was formed with a fine microstructure as a non-equilibrium phase; then, aluminum was selectively removed. After aluminum leaching the β-(AlNi) phase was transformed into the more stable nickel fcc structure.
AB - Raney type catalysts were prepared by means of a two step procedure: (1) Mechanical alloying of the metals and, (2) alkaline aluminum leaching. Mechanical alloying is a novel alternative related to the synthesis of skeletal Ni catalysts. X-ray diffraction, and Mossbauer spectroscopies were performed for catalysts characterization. Binary Al-Ni and ternary Al-Ni-Fe alloys were produced by mechanical alloying from pure metallic powders; in particular, the intermetallic β-(AlNi) phase was formed with a fine microstructure as a non-equilibrium phase; then, aluminum was selectively removed. After aluminum leaching the β-(AlNi) phase was transformed into the more stable nickel fcc structure.
UR - http://www.scopus.com/inward/record.url?scp=0033802477&partnerID=8YFLogxK
U2 - 10.1023/A:1006798302775
DO - 10.1023/A:1006798302775
M3 - Artículo
SN - 0236-5731
VL - 245
SP - 637
EP - 639
JO - Journal of Radioanalytical and Nuclear Chemistry Letters
JF - Journal of Radioanalytical and Nuclear Chemistry Letters
IS - 3
ER -