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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-Al<subscript>2</subscript>O<subscript>3</subscript> 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 P<subscript>2</subscript>O<subscript>5</subscript> in a support of 0.5 wt %. Heteropoly acids H<subscript>3</subscript>PMo<subscript>12</subscript>O<subscript>40</subscript> · nH<subscript>2</subscript>O and H<subscript>3</subscript>PW<subscript>12</subscript>O<subscript>40</subscript> · nH<subscript>2</subscript>O 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 :
- Complementary Index
- Journal :
- Kinetics & Catalysis
- Publication Type :
- Academic Journal
- Accession number :
- 132001996
- Full Text :
- https://doi.org/10.1134/S0023158418050142