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Title: Low temperature dry reforming of methane using Ru-Ni-Mg/ceria-zirconia catalysts: Effect of Ru loading and reduction temperature

Abstract

Dry reforming catalysts, especially those with activity at moderate temperatures, have been intensely investigated to enhance the conversion of biogas. Here, Ru is evaluated as a promoter for Ni-Mg based catalysts. Catalysts based on 1.4 wt%Ni-1.0 wt%Mg-Ce0.6Zr0.4O2 with Ru (0.02–0.32 wt%) were prepared using incipient wetness. The reducibility of the catalysts and conversions increased with increasing Ru content. Increases in conversions with increasing Ru loading was attributed to the additional active sites and synergistic effect between Ru and Ni, which weakened Ni-Mg interactions. Samples showed dry reforming activity at low temperatures (450–510 °C). Reaction rates and activation energies of higher loading Ru samples (1.4 wt%Ni-1.0 wt%Mg/Ce0.6Zr0.4 O2 with 0.16 and 0.32 wt%Ru) decreased when the reduction temperature was raised from 300 to 400 °C. A 20 h TOS study showed stable catalytic activity with minimal coke deposition. Furthermore, the results suggest that Ru is an alternative to Pt in promoting low temperature dry reforming of methane.

Authors:
 [1];  [1];  [2];  [1];  [1]
+ Show Author Affiliations
  1. Univ. of South Florida, Tampa, FL (United States)
  2. National Renewable Energy Lab. (NREL), Golden, CO (United States)
Publication Date:
Research Org.:
Univ. of South Florida, Tampa, FL (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1902712
Grant/Contract Number:  
EE0008488
Resource Type:
Accepted Manuscript
Journal Name:
Applied Catalysis. A, General
Additional Journal Information:
Journal Volume: 645; Journal ID: ISSN 0926-860X
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; Low temperature dry reforming; Biogas conversion; Metal loading; Reduction temperature; Ru-Ni-Mg-ceria zirconia catalysts

Citation Formats

Sokefun, Yetunde Oluwatosin, Trottier, James, Yung, Matthew M., Joseph, Babu, and Kuhn, John N. Low temperature dry reforming of methane using Ru-Ni-Mg/ceria-zirconia catalysts: Effect of Ru loading and reduction temperature. United States: N. p., 2022. Web. doi:10.1016/j.apcata.2022.118842.
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Sokefun, Yetunde Oluwatosin, Trottier, James, Yung, Matthew M., Joseph, Babu, & Kuhn, John N. Low temperature dry reforming of methane using Ru-Ni-Mg/ceria-zirconia catalysts: Effect of Ru loading and reduction temperature. United States. https://doi.org/10.1016/j.apcata.2022.118842
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Sokefun, Yetunde Oluwatosin, Trottier, James, Yung, Matthew M., Joseph, Babu, and Kuhn, John N. Wed . "Low temperature dry reforming of methane using Ru-Ni-Mg/ceria-zirconia catalysts: Effect of Ru loading and reduction temperature". United States. https://doi.org/10.1016/j.apcata.2022.118842. https://www.osti.gov/servlets/purl/1902712.
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@article{osti_1902712,
title = {Low temperature dry reforming of methane using Ru-Ni-Mg/ceria-zirconia catalysts: Effect of Ru loading and reduction temperature},
author = {Sokefun, Yetunde Oluwatosin and Trottier, James and Yung, Matthew M. and Joseph, Babu and Kuhn, John N.},
abstractNote = {Dry reforming catalysts, especially those with activity at moderate temperatures, have been intensely investigated to enhance the conversion of biogas. Here, Ru is evaluated as a promoter for Ni-Mg based catalysts. Catalysts based on 1.4 wt%Ni-1.0 wt%Mg-Ce0.6Zr0.4O2 with Ru (0.02–0.32 wt%) were prepared using incipient wetness. The reducibility of the catalysts and conversions increased with increasing Ru content. Increases in conversions with increasing Ru loading was attributed to the additional active sites and synergistic effect between Ru and Ni, which weakened Ni-Mg interactions. Samples showed dry reforming activity at low temperatures (450–510 °C). Reaction rates and activation energies of higher loading Ru samples (1.4 wt%Ni-1.0 wt%Mg/Ce0.6Zr0.4 O2 with 0.16 and 0.32 wt%Ru) decreased when the reduction temperature was raised from 300 to 400 °C. A 20 h TOS study showed stable catalytic activity with minimal coke deposition. Furthermore, the results suggest that Ru is an alternative to Pt in promoting low temperature dry reforming of methane.},
doi = {10.1016/j.apcata.2022.118842},
journal = {Applied Catalysis. A, General},
number = ,
volume = 645,
place = {United States},
year = {Wed Aug 24 00:00:00 EDT 2022},
month = {Wed Aug 24 00:00:00 EDT 2022}
}
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