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Title: Noble-metal-free bimetallic alloy nanoparticle-catalytic gasification of phenol in supercritical water

Journal Article · · Journal of Supercritical Fluids

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
Citation Metrics:
Cited by: 20 works
Citation information provided by
Web of Science

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Cited By (5)

Catalytic gasification of phenol in supercritical water over bimetallic Co–Ni/AC catalyst journal February 2018
Bimetallic Nanoparticles in Alternative Solvents for Catalytic Purposes 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