Phase composition of aluminum-nickel-moybdenum oxide catalysts for hydrotreatment: The nature of the active phase

Journal Article · Sat Jul 01 00:00:00 EDT 1995 · Kinetics and Catalysis

OSTI ID:159603

Gazimzyanov, N R; Kvashonkin, V I ^[1]; Zhdanova, K P ^[2]

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1. Elektrogorsk Institute of Oil Processing, Elektrogorsk, Moscow (Russian Federation)
2. Institute of Petrochemistry and Coal Chemistry, Angarsk (Russian Federation)

The phase composition of aluminum-nickel-molybdenum oxide catalysts (ANMC) with various MoO{sub 3} and NiO contents is studied by XRD, diffuse-reflectance electron spectroscopy, O{sub 2} chemisorption on the reduced samples, and selective extraction of Mo and Ni compounds. The results of the phase analysis are compared to the data on catalyst tests in thiophene hydrogenolysis. The phase composition of ANMC is shown to involve the surface analog of a heteropolymolybdenum compound (HPC). The content of the latter, which was found by extraction with water, correlates well with the O{sub 2} chemisorption data and partially with the catalytic activity. Finally, HPC is determined to be the oxide precursor of the active sulfide phase.

• OSTI ID: 159603
• Journal Information: Kinetics and Catalysis, Vol. 36, Issue 4; Other Information: PBD: Jul-Aug 1995; TN: Translated from Kinetika i Kataliz; 36: No. 4, 626-630(1995)
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
36 MATERIALS SCIENCE
MOLYBDENUM OXIDES
CATALYTIC EFFECTS
NICKEL OXIDES
ALUMINIUM OXIDES
PETROLEUM PRODUCTS
PROCESSING
CATALYSTS
PHASE STUDIES
DESULFURIZATION
CHEMICAL PROPERTIES
THIOPHENE