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Effect of the Composition and Morphology of the Active Phase of NiMoW/P-Al2O3 Catalysts with Different Mo/W Ratios on Their Activity in the Reactions of Dibenzothiophene Hydrogenolysis and Naphthalene Hydrogenation.
- Source :
-
Kinetics & Catalysis . Sep2018, Vol. 59 Issue 5, p644-652. 9p. - Publication Year :
- 2018
-
Abstract
- A series of catalysts have been synthesized Ni-Mo-W/P-Al2O3 with different Mo: W ratios (a sample without W, Mo: W = 2: 1, Mo: W = 1: 1, Mo: W = 1: 2, and a sample without Мо) and a concentration of P2O5 in a support of 0.5 wt %. Heteropoly acids H3PMo12O40 · nH2O and H3PW12O40 · nH2O and nickel citrate were precursors of the active phase. High-resolution transmission electron microscopy and X-ray photoelectron spectroscopy were used to study the surface of the sulfide phase of the samples. Their catalytic activity was estimated in the reactions of dibenzothiophene hydrodesulfurization and naphthalene hydrogenation. A catalyst with the ratio Mo: W = 1: 1 showed the highest activity, and was characterized by the maximum concentration of atomic groups Ni-Mo-W-S, Mo-S, and W-S. [ABSTRACT FROM AUTHOR]
- Subjects :
- *NICKEL catalysts
*DIBENZOTHIOPHENE
*HYDROGENOLYSIS
*NAPHTHALENE
*HYDROGENATION
Subjects
Details
- Language :
- English
- ISSN :
- 00231584
- Volume :
- 59
- Issue :
- 5
- Database :
- Academic Search Index
- Journal :
- Kinetics & Catalysis
- Publication Type :
- Academic Journal
- Accession number :
- 132001996
- Full Text :
- https://doi.org/10.1134/S0023158418050142