Noble-metal-free bimetallic alloy nanoparticle-catalytic gasification of phenol in supercritical water
The exploration of non-noble-metal catalysts for high efficiency gasification of biomass in supercritical water (SCW) is of great significance for the sustainable development. A series of Ni–M (M = Co or Zn) bimetallic nanoparticles supported on graphitized carbon black were synthesized and examined as catalysts for gasification of phenol in SCW. We found that a nearly complete gasification of phenol can be achieved even at a low temperature of 450 °C with the bimetallic nanoparticles catalysts. Kinetic study indicated the activation energy for phenol gasification were 20.4 ± 2.6 and 43.6 ± 2.6 kJ/mol for Ni20Zn15 and Ni20Co15 catalyst, respectively. Furthermore, XRD, XPS and TEM were performed to characterize the catalysts and the results showed the formation of NiCo and NiZn alloy phase. Catalyst recycling experiments were also conducted to evaluate the stability of the catalysts. The characterization of used catalysts suggest that the severe agglomeration of nanoparticles leads to the decrease in catalytic activity.
- Research Organization:
- Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
- Sponsoring Organization:
- USDOE
- Grant/Contract Number:
- AC05-76RL01830; 51568067; 21307049; U1137603; 1319880237
- OSTI ID:
- 1347958
- Journal Information:
- Journal of Supercritical Fluids, Vol. 126, Issue C; ISSN 0896-8446
- Publisher:
- ElsevierCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
Catalytic gasification of phenol in supercritical water over bimetallic Co–Ni/AC catalyst
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journal | February 2018 |
Bimetallic Nanoparticles in Alternative Solvents for Catalytic Purposes
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journal | July 2017 |
Selective Conversion of Phenol in a Subcritical Water Medium Using γ-Al2O3 Supported Ni–Co Bimetallic Catalyst
|
journal | February 2019 |
Catalytic gasification of phenol in supercritical water over bimetallic Co–Ni/AC catalyst | text | January 2018 |
Catalytic gasification of phenol in supercritical water over bimetallic Co–Ni/AC catalyst
|
text | January 2018 |
Similar Records
Oxidation of phenolics in supercritical water. Quarterly technical progress report, June 1, 1993--August 31, 1993
Oxidation of phenolics in supercritical water. Quarterly technical progress report, 1 December 1993--28 February 1994