Phase composition of Al-Ni-Mo catalysts for hydrotreatment prepared by one-step impregnation using different procedures
Journal Article
·
· Kinetics and Catalysis
OSTI ID:192038
- Elektrogorsk Inst. of Oil Processing (Russian Federation)
X-ray diffraction, Raman and diffuse-reflectance (DR) spectroscopy, coupled with selective extraction of Mo and Ni, are applied to investigate the phase composition of Al-Ni-Mo catalysts prepared both by a conventional one-step impregnation with ammonia and phosphoric acid, and by a new method based on the use of nickel heteropolymolybdate. By comparing the data obtained by Raman and DR spectroscopy with the data on water extraction, it is shown that the phase removed on washing can be ascribed to heteropolymolybdates. Formation of these compounds is found to be favored by the use of the solution containing H{sub 3}PO{sub 4} to impregnate the catalyst with Mo and Ni.
- OSTI ID:
- 192038
- Journal Information:
- Kinetics and Catalysis, Vol. 36, Issue 5; Other Information: PBD: Sep-Oct 1995; TN: Translated from Kinetika i Kataliz; 36: No. 5, 754-758(1995)
- Country of Publication:
- United States
- Language:
- English
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