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

Abstract

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.

Authors:
; ; ; ; ; ; ;
Publication Date:
Research Org.:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1347958
Grant/Contract Number:
AC05-76RL01830; 51568067; 21307049; U1137603; 1319880237
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Journal of Supercritical Fluids
Additional Journal Information:
Journal Volume: 126; Journal Issue: C; Journal ID: ISSN 0896-8446
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; phenol; supercritical water; gasification; bimetallic nanoparticle; alloy

Citation Formats

Jia, Lijuan, Yu, Jiangdong, Chen, Yuan, Ning, Ping, Guan, Qingqing, Gu, Junjie, Miao, Rongrong, and Chen, Qiuling. Noble-metal-free bimetallic alloy nanoparticle-catalytic gasification of phenol in supercritical water. United States: N. p., 2017. Web. doi:10.1016/j.supflu.2017.02.017.
Jia, Lijuan, Yu, Jiangdong, Chen, Yuan, Ning, Ping, Guan, Qingqing, Gu, Junjie, Miao, Rongrong, & Chen, Qiuling. Noble-metal-free bimetallic alloy nanoparticle-catalytic gasification of phenol in supercritical water. United States. doi:10.1016/j.supflu.2017.02.017.
Jia, Lijuan, Yu, Jiangdong, Chen, Yuan, Ning, Ping, Guan, Qingqing, Gu, Junjie, Miao, Rongrong, and Chen, Qiuling. Tue . "Noble-metal-free bimetallic alloy nanoparticle-catalytic gasification of phenol in supercritical water". United States. doi:10.1016/j.supflu.2017.02.017.
@article{osti_1347958,
title = {Noble-metal-free bimetallic alloy nanoparticle-catalytic gasification of phenol in supercritical water},
author = {Jia, Lijuan and Yu, Jiangdong and Chen, Yuan and Ning, Ping and Guan, Qingqing and Gu, Junjie and Miao, Rongrong and Chen, Qiuling},
abstractNote = {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.},
doi = {10.1016/j.supflu.2017.02.017},
journal = {Journal of Supercritical Fluids},
number = C,
volume = 126,
place = {United States},
year = {Tue Aug 01 00:00:00 EDT 2017},
month = {Tue Aug 01 00:00:00 EDT 2017}
}

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