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Coupled reforming of methane to syngas (2H 2 -CO) over Mg-Al oxide supported Ni catalyst
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Li, Maoshuai and van Veen, André C. (2018) Coupled reforming of methane to syngas (2H 2 -CO) over Mg-Al oxide supported Ni catalyst. Applied Catalysis A: General, 550 . pp. 176-183. doi:10.1016/j.apcata.2017.11.004 ISSN 0926-860X.
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Official URL: http://dx.doi.org/10.1016/j.apcata.2017.11.004
Abstract
We report bi-reforming and coupled reforming of methane with carbon dioxide, steam and/or oxygen to produce syngas over Ni supported on Mg-Al mixed oxide. The catalyst has been characterised in terms of specific surface area, TPR, XRD, TGA-DTG, SEM and TPO-MS analysis. Ni/Mg-Al mixed oxide exhibited Ni particle size range (11–30 nm) with a mean of 20.7 nm. Syngas H2/CO = 2.0, suitable for methanol/Fischer-Tropsch fuel synthesis, has been achieved for both reactions (T = 1048 K, P = 1 atm). The impact of process parameters including temperature, feeding concentration and GHSV on conversion and H2/CO ratio has been demonstrated. The Ni catalyst suffered temporal activity decline in bi-reforming that can be linked to formation of carbon whiskers encapsulated Ni particles resulting in a loss of active sites. Coupled reforming delivered higher CH4 conversion and enhanced stability, but lower CO2 conversion than bi-reforming under similar conditions. The enhanced stability in coupled reforming can be attributed to lower carbon deposition on Ni particles due to combustion of carbon by oxygen.
| Item Type: | Journal Article | ||||||||
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| Subjects: | Q Science > QD Chemistry | ||||||||
| Divisions: | Faculty of Science, Engineering and Medicine > Engineering > Engineering | ||||||||
| Library of Congress Subject Headings (LCSH): | Catalysis, Methane, Synthesis gas, Nickel | ||||||||
| Journal or Publication Title: | Applied Catalysis A: General | ||||||||
| Publisher: | Elsevier BV | ||||||||
| ISSN: | 0926-860X | ||||||||
| Official Date: | 25 January 2018 | ||||||||
| Dates: |
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| Volume: | 550 | ||||||||
| Number of Pages: | 32 | ||||||||
| Page Range: | pp. 176-183 | ||||||||
| DOI: | 10.1016/j.apcata.2017.11.004 | ||||||||
| Status: | Peer Reviewed | ||||||||
| Publication Status: | Published | ||||||||
| Access rights to Published version: | Restricted or Subscription Access | ||||||||
| Date of first compliant deposit: | 7 November 2017 | ||||||||
| Date of first compliant Open Access: | 6 November 2018 | ||||||||
| RIOXX Funder/Project Grant: |
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