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Surface Single-Cluster Catalyst for N2-to-NH3 Thermal Conversion
- Source :
- Journal of the American Chemical Society. 140:46-49
- Publication Year :
- 2017
- Publisher :
- American Chemical Society (ACS), 2017.
-
Abstract
- The ammonia synthesis from N2 is of vital importance, with imitating biological nitrogen fixation attracted much interest. Herein, we investigate the catalytic mechanisms of N2-to-NH3 thermal conversion on the singly dispersed bimetallic catalyst Rh1Co3/CoO(011), and find that the preferred pathway is an associative mechanism analogous to the biological process, in which alternating hydrogenations of the N2 occur, with H2 activation on both metal sites. We propose that the singly dispersed bimetallic M1An catalyst, in which the doped metal atom M substitutes an oxygen atom on the oxide surface of metal A, serves as a new surface single-cluster catalyst (SCC) design platform for the biomimetic N2-to-NH3 thermal conversion. The catalytic ability of M1An catalyst is attributed to both the charge buffer capacity of doped metal M and the complementary role of synergic metal A in catalysis. Our work provides insights and guidelines for further optimizing the M1An catalyst.
- Subjects :
- Doping
Oxide
02 engineering and technology
General Chemistry
Associative substitution
010402 general chemistry
021001 nanoscience & nanotechnology
01 natural sciences
Biochemistry
Catalysis
0104 chemical sciences
Metal
Ammonia production
chemistry.chemical_compound
Colloid and Surface Chemistry
chemistry
Chemical engineering
visual_art
Atom
visual_art.visual_art_medium
0210 nano-technology
Bimetallic strip
Subjects
Details
- ISSN :
- 15205126 and 00027863
- Volume :
- 140
- Database :
- OpenAIRE
- Journal :
- Journal of the American Chemical Society
- Accession number :
- edsair.doi...........d088413346635f35c8a2e1ddeec8f8a3