Syngas for C1-Chemistry. Limits of the Steam Reforming Process

Rostrup-Nielsen, J.R.

doi:10.1016/s0167-2991(09)60501-2

Cited by 63 publications

(9 citation statements)

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“…It was observed that the catalyst deactivated rapidly by formation of carbon on its surface. Rapid deactivation due to carbon deposition on supported Ni catalysts during the CH 4 /CO 2 reaction was later observed by many investigators. − It is generally claimed that catalyst deactivation is due to coke formation within the pores of the catalyst, which leads to breakup of the catalyst particles. Gadalla et al , studied carbon dioxide reforming of methane over Ni supported on different carriers.…”

Section: Introductionmentioning

confidence: 94%

“…Numerous supported metal catalysts have been tested, including Ni-based catalysts, − as well as supported noble metal (Rh, Ru, Pd, Pt, and Ir) catalysts, − which have been found to exhibit promising catalytic performance in terms of methane conversion and selectivity to synthesis gas. The major problem encountered in this process is rapid catalyst deactivation by deposition of excess carbon on the catalyst surface.…”

Section: Introductionmentioning

confidence: 99%

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Comparative Study of Carbon Dioxide Reforming of Methane to Synthesis Gas over Ni/La₂O₃and Conventional Nickel-Based Catalysts

et al. 1996

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Carbon dioxide reforming of methane to synthesis gas was studied by employing a Ni/La2O3 catalyst as well as conventional nickel-based catalysts, i.e., Ni/γ-Al2O3, Ni/CaO/γ-Al2O3, and Ni/CaO. It is observed that, in contrast to conventional nickel-based catalysts, which exhibit continuous deactivation with time on stream, the rate of reaction over the Ni/La2O3 catalyst increases during the initial 2−5 h and then tends to be essentially invariable with time on stream. X-ray photoelectron spectroscopy (XPS) studies show that the surface carbon on spent Ni/Al2O3 catalyst is dominated by −C−C− species that eventually block the entire Ni surface, leading to total loss of activity. The surface carbon on the working Ni/La2O3 catalyst is found to consist of −C−C− species and a large amount of oxidized carbon. Both XPS and secondary ion mass spectrometry results reveal that a large fraction of surface Ni on the working Ni/La2O3 catalyst is not shielded by carbon deposition. FTIR studies reveal that the enhancement of the rate of reaction over the Ni/La2O3 catalyst during the initial 2−5 h of reaction correlates well with increasing concentrations of La2O2CO3 and formate species on the support, suggesting that these species may participate in the surface chemistry to produce synthesis gas. It is proposed that the interaction between nickel and lanthanum species creates a new type of synergetic sites at the Ni−La2O3 interfacial area, which offer active and stable performance of carbon dioxide reforming of methane to synthesis gas over the stated catalyst.

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Section: Introductionmentioning

confidence: 94%

Section: Introductionmentioning

confidence: 99%

Comparative Study of Carbon Dioxide Reforming of Methane to Synthesis Gas over Ni/La₂O₃and Conventional Nickel-Based Catalysts

et al. 1996

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“…Consequently, a two-stage reformer system is utilized, a prereformer (preconverter) and a primary reformer (Scheme ). The installation of an upstream adiabatic reformer is to convert all high hydrocarbon feedstocks to C 1 -components without intermediate products at low temperatures (e.g., 623–823 K) . CH 4 is then preheated and reformed to syngas at high temperatures in the primary reformer …”

Section: Bio-oil Reformingmentioning

confidence: 99%

Catalytic Reforming of Oxygenates: State of the Art and Future Prospects

2016

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This Review describes recent advances in the design, synthesis, reactivity, selectivity, structural, and electronic properties of the catalysts for reforming of a variety of oxygenates (e.g., from simple monoalcohols to higher polyols, then to sugars, phenols, and finally complicated mixtures like bio-oil). A comprehensive exploration of the structure-activity relationship in catalytic reforming of oxygenates is carried out, assisted by state-of-the-art characterization techniques and computational tools. Critical emphasis has been given on the mechanisms of these heterogeneous-catalyzed reactions and especially on the nature of the active catalytic sites and reaction pathways. Similarities and differences (reaction mechanisms, design and synthesis of catalysts, as well as catalytic systems) in the reforming process of these oxygenates will also be discussed. A critical overview is then provided regarding the challenges and opportunities for research in this area with a focus on the roles that systems of heterogeneous catalysis, reaction engineering, and materials science can play in the near future. This Review aims to present insights into the intrinsic mechanism involved in catalytic reforming and provides guidance to the development of novel catalysts and processes for the efficient utilization of oxygenates for energy and environmental purposes.

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“…There is a great variety in the reactivity of alkanes. Whereas both the decomposition and dry reforming of CH 4 requires high temperature even on the most active Rh [4,5], the reactions of C 2 H 6 [6e8] and C 3 H 8 [9,10] proceeds at significantly lower temperatures. This difference in the reactivity appeared in their aromatization on Mo 2 C/ZSM-5.…”

Section: Introductionmentioning

confidence: 99%

Production of H 2 in the photocatalytic reactions of ethane on TiO 2 -supported noble metals

Halasi¹,

Tóth²,

Bánsági³

et al. 2016

International Journal of Hydrogen Energy

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Syngas for C1-Chemistry. Limits of the Steam Reforming Process

Cited by 63 publications

References 1 publication

Comparative Study of Carbon Dioxide Reforming of Methane to Synthesis Gas over Ni/La₂O₃and Conventional Nickel-Based Catalysts

Comparative Study of Carbon Dioxide Reforming of Methane to Synthesis Gas over Ni/La₂O₃and Conventional Nickel-Based Catalysts

Catalytic Reforming of Oxygenates: State of the Art and Future Prospects

Production of H 2 in the photocatalytic reactions of ethane on TiO 2 -supported noble metals

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Syngas for C1-Chemistry. Limits of the Steam Reforming Process

Cited by 63 publications

References 1 publication

Comparative Study of Carbon Dioxide Reforming of Methane to Synthesis Gas over Ni/La2O3and Conventional Nickel-Based Catalysts

Comparative Study of Carbon Dioxide Reforming of Methane to Synthesis Gas over Ni/La2O3and Conventional Nickel-Based Catalysts

Catalytic Reforming of Oxygenates: State of the Art and Future Prospects

Production of H 2 in the photocatalytic reactions of ethane on TiO 2 -supported noble metals

Contact Info

Product

Resources

About

Comparative Study of Carbon Dioxide Reforming of Methane to Synthesis Gas over Ni/La₂O₃and Conventional Nickel-Based Catalysts

Comparative Study of Carbon Dioxide Reforming of Methane to Synthesis Gas over Ni/La₂O₃and Conventional Nickel-Based Catalysts