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Boosting CO hydrogenation towards C2+ hydrocarbons over interfacial TiO2−x/Ni catalysts.
- Source :
- Nature Communications; 11/8/2022, Vol. 13 Issue 1, p1-11, 11p
- Publication Year :
- 2022
-
Abstract
- Considerable attention has been drawn to tune the geometric and electronic structure of interfacial catalysts via modulating strong metal-support interactions (SMSI). Herein, we report the construction of a series of TiO<subscript>2−x</subscript>/Ni catalysts, where disordered TiO<subscript>2−x</subscript> overlayers immobilized onto the surface of Ni nanoparticles (~20 nm) are successfully engineered with SMSI effect. The optimal TiO<subscript>2−x</subscript>/Ni catalyst shows a CO conversion of ~19.8% in Fischer–Tropsch synthesis (FTS) process under atmospheric pressure at 220 °C. More importantly, ~64.6% of the product is C<subscript>2+</subscript> paraffins, which is in sharp contrast to the result of the conventional Ni catalyst with the main product being methane. A combination study of advanced electron microscopy, multiple in-situ spectroscopic characterizations, and density functional theory calculations indicates the presence of Ni<superscript>δ−</superscript>/TiO<subscript>2−x</subscript> interfacial sites, which could bind carbon atom strongly, inhibit methane formation and facilitate the C-C chain propagation, lead to the production of C<subscript>2+</subscript> hydrocarbon on Ni surface. Considerable attention has been drawn to tune the geometric and electronic structure of interfacial catalysts via modulating strong metal-support interactions (SMSI). Here the authors report the remarkable catalytic performance of CO hydrogenation over an interfacial TiO<subscript>2−x</subscript>/Ni catalyst by means of SMSI. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 20411723
- Volume :
- 13
- Issue :
- 1
- Database :
- Complementary Index
- Journal :
- Nature Communications
- Publication Type :
- Academic Journal
- Accession number :
- 160074943
- Full Text :
- https://doi.org/10.1038/s41467-022-34463-7