Journal ArticleDOI
Catalytic dry reforming of methane over high surface area ceria
TLDR
In this article, high surface area ceria (CeO 2) was synthesized by a surfactant-assisted approach, which has useful dry reforming activity for H 2 and CO production under solid oxide fuel cells (SOFCs) conditions.Abstract:
High surface area ceria (CeO 2 (HSA)), synthesized by a surfactant-assisted approach, was found to have useful dry reforming activity for H 2 and CO production under solid oxide fuel cells (SOFCs) conditions. The catalyst provides significantly higher reforming reactivity and excellent resistance toward carbon deposition compared to Ni/Al 2 O 3 and conventional low surface area ceria (CeO 2 (LSA)) under dry reforming conditions. These enhancements are due to the high redox property of CeO 2 (HSA). During the dry reforming process, the redox reactions between the gaseous components in the system and the lattice oxygen (O x ) take place on ceria surface. Among these reactions, the rapid redox reactions of carbon compounds such as CH 4 , and CO with lattice oxygen (CH 4 + O x → CO + H 2 + O x −1 and CO + O x = CO 2 + O x −1 ) can prevent the formation of carbon species from the methane decomposition and Boudard reactions even at low inlet carbon dioxide concentration. In particular, the dry reforming rate over CeO 2 (HSA) is proportional to the methane partial pressure and the operating temperature. Carbon dioxide presents weak positive impact on the methane conversion, whereas both carbon monoxide and hydrogen inhibit the reforming rate. The activation energies and reforming rates under the same methane concentration for CeO 2 toward the dry reforming are almost equal to the steam reforming as previously reported [1–4] . This result suggests the similar reaction mechanisms for both the steam reforming and the dry reforming over CeO 2 ; i.e., the dry reforming rate is governed by the slow reaction of adsorbed methane, or surface hydrocarbon species, with oxygen in CeO 2 , and a rapid gas–solid reaction between CO 2 and CeO 2 to replenish the oxygen.read more
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Journal ArticleDOI
Fundamentals and Catalytic Applications of CeO2-Based Materials
TL;DR: This review has a wide view on all those aspects related to ceria which promise to produce an important impact on the authors' life, encompassing fundamental knowledge of CeO2 and its properties, characterization toolbox, emerging features, theoretical studies, and all the catalytic applications, organized by their degree of establishment on the market.
Journal ArticleDOI
Catalytic Technology for Carbon Dioxide Reforming of Methane to Synthesis Gas
TL;DR: In this article, the development of CO2 reforming for syngas production is reviewed, covering process chemistry, catalyst development, and process technologies as well as the potential future direction for this process.
Journal ArticleDOI
Morphology Dependence of Catalytic Properties of Ni/CeO2 Nanostructures for Carbon Dioxide Reforming of Methane
TL;DR: In this paper, the comparative catalytic activity and coke resistance of Ni/CeO2 nanorods (NR) and nanopolyhedra (NP) were examined in carbon dioxide reforming of methane over Ni/NiO2-NR catalysts and showed that the predominantly exposed planes are the unusually reactive {110 and {100} planes on the CeO2−NR rather than the stable {111} one on the NiO2•NP.
Journal ArticleDOI
A review on catalyst development for dry reforming of methane to syngas: Recent advances
A.A. Abdulrasheed,A.A. Abdulrasheed,Aishah Abdul Jalil,Yahya Gambo,M. Ibrahim,M. Ibrahim,H. U. Hambali,M.Y.S. Hamid +7 more
TL;DR: In this paper, a review provides a contemporary assessment of progresses recorded on synergistic interplay among catalyst components (active metals, support, promoters and binders) during dry reforming using state-of-the-art experimental and theoretical techniques.
Journal ArticleDOI
Review on dry reforming of methane, a potentially more environmentally-friendly approach to the increasing natural gas exploitation
TL;DR: In this short review, attention will be given to the thermodynamics of dry reforming followed by an investigation on dry reforming using heterogeneous catalyst by focusing on the most popular elements used in literature for dry reforming.
References
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Journal ArticleDOI
Synthesis of a Stable Hexagonally Packed Mesoporous Niobium Oxide Molecular Sieve Through a Novel Ligand‐Assisted Templating Mechanism
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Formation of a Porous Zirconium Oxo Phosphate with a High Surface Area by a Surfactant‐Assisted Synthesis
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The chemistry of methane reforming with carbon dioxide and its current and potential applications
J.H. Edwards,A.M. Maitra +1 more
TL;DR: A review of the literature on the catalysis of CO 2 /CH 4 reforming shows that Group VIII metals, when distributed in reduced form on suitable supports, are effective catalysts for this reaction as discussed by the authors.
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The preparation of high surface area CeO2-ZrO2 mixed oxides by a surfactant-assisted approach
TL;DR: In this paper, the authors investigated the preparation of high surface area, three-way catalysts (TWC)-like, ceria-zirconia mixed oxide and showed that under basic conditions cationic surfactants effectively incorporate into hydrous oxides of cerium and zirconium.
Journal ArticleDOI
Modelling of an indirect internal reforming solid oxide fuel cell
TL;DR: In this article, a steady-state model of an IIR-SOFC was developed to study the mismatch between the thermal load associated with the rate of steam reforming at typical SOFC temperatures and the local amount of heat available from the fuel cell reactions.