Catalytic partial oxidation of CH4 to H2 over cobalt catalysts at moderate temperatures

Lødeng, Rune; Bjørgum, Erlend; Enger, Bjørn Christian; Eilertsen, Jan L.; Holmén, Anders; Krogh, B.; Rønnekleiv, Morten; Rytter, Erling

doi:10.1016/j.apcata.2007.08.038

Cited by 29 publications

(17 citation statements)

References 53 publications

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“…Since cobalt is typically a good catalyst for methane partial oxidation [35,36], the acquirement of high OCV and power density was somewhat surprising. Fig.…”

Section: In Situ Reduction With Hydrogenmentioning

confidence: 98%

Initialization of a methane-fueled single-chamber solid-oxide fuel cell with NiO+SDC anode and BSCF+SDC cathode

Zhang

Zheng

Ran

et al. 2008

Journal of Power Sources

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“…Since cobalt is typically a good catalyst for methane partial oxidation [35,36], the acquirement of high OCV and power density was somewhat surprising. Fig.…”

Section: In Situ Reduction With Hydrogenmentioning

confidence: 98%

Initialization of a methane-fueled single-chamber solid-oxide fuel cell with NiO+SDC anode and BSCF+SDC cathode

Zhang

Zheng

Ran

et al. 2008

Journal of Power Sources

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“…100 mg of the catalyst powder (sieved fraction between 180 and 250 µm to avoid intraphase and interphase mass transport [32]) mixed with 200 mg of silicon carbide were placed inside the quartz tube and held with quartz wool on each side of the catalytic bed. Before the reactions, the samples were treated "in situ" under two different conditions.…”

Section: Catalytic Measurementsmentioning

confidence: 99%

Effects of Synthesis on the Structural Properties and Methane Partial Oxidation Activity of Ni/CeO2 Catalyst

2018

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Nickel catalysts supported on homemade CeO 2 oxide were prepared by two procedures intending to achieve different degree of metal-support interaction. One method consisted of a co-precipitation that was assisted by microwave; the other method was based on a modified wetness impregnation in the presence of the organic complexing ligand, nitrilotriacetic acid (NTA). The support and catalysts were characterized by temperature programmed reduction (TPR), X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS) techniques. Significant differences in the structure, in redox properties and in the elemental surface composition emerged. The catalytic behavior in the partial oxidation of methane was tested at atmospheric pressure, in a range of temperature between 400-800 • C, using diluted feed gas mixture with CH 4 /O 2 = 2 and GHSV = 60,000 mL g −1 h −1 . Moreover, the effect of the catalyst reduction pretreatment was investigated. The better catalytic performance of the microwave-assisted sample as compared to the NTA prepared sample was attributed to the stronger interaction of nickel with CeO 2 . Indeed, according to the structural and reducibility results, an adequate electronic contact between the metal and the support favors the formation of oxygen vacancies of ceria and inhibits the sintering of the catalyst active species, with an improvement of the catalytic performance.

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Section: Introductionmentioning

confidence: 99%

“…Ideally, the catalytic partial oxidation of CH 4 is described by reaction; CH 4 + ½O 2  CO + 2H 2 . However, the reaction mechanism is very complex and has been studied extensively using various transition and noble metal catalysts with different supports [13]. Thermodynamically, the higher selectivity of synthesis gas (produced from CH 4 partial oxidation) is favoured at higher temperatures (>1000 °C) [14].…”

Section: Introductionmentioning

confidence: 99%

“…Thermodynamically, the higher selectivity of synthesis gas (produced from CH 4 partial oxidation) is favoured at higher temperatures (>1000 °C) [14]. The production of synthesis gas at relatively moderate temperatures was recently reported where the researchers used multiple catalysts with different metal promoters and cobalt loadings [13,15].In this paper, the catalytic partial oxidation of CH 4 to synthesis gas was investigated using N 2 O as oxidant. The dissociation of N 2 O during catalytic reaction is a complex process and is expected to influence the partial oxidation mechanism of CH 4 [16,17].…”

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Partial oxidation of methane with nitrous oxide forms synthesis gas over cobalt exchanged ZSM-5

Khan

Kennedy

Dlugogorski

et al. 2014

Catalysis Communications

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ÔØ Å ÒÙ× Ö ÔØPartial oxidation of methane with nitrous oxide forms synthesis gas over cobalt exchanged ZSM-5 Please cite this article as: Naseer A. Khan, Eric M. Kennedy, Bogdan Z. Dlugogorski, Adesoji A. Adesina, Michael Stockenhuber, Partial oxidation of methane with nitrous oxide forms synthesis gas over cobalt exchanged ZSM-5, Catalysis Communications (2014), doi: 10.1016/j.catcom.2014 This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. A C C E P T E D M A N U S C R I P T ACCEPTED MANUSCRIPTPartial oxidation of methane with nitrous oxide forms synthesis gas over cobalt exchanged ZSM-5. support are proposed as the active sites for H 2 (synthesis gas) formation. IntroductionIndustrial activities have increased N 2 O (greenhouse gas) emissions significantly [1][2][3][4]. N 2 O gas has negative impact on the stratospheric ozone layer and has been identified in the Kyoto protocol as a target molecule for greenhouse gas (GHG) emission reduction [5,6]. Projects for N 2 O mitigation can effectively reduce emissions from stationary sources (nitric and adipic acid plants) [7]. The catalytic partial oxidation of CH 4 was first reported in 1929 [11], with continuing interest from industry and academia in its development and commercial deployment [12]. Ideally, the catalytic partial oxidation of CH 4 is described by reaction; CH 4 + ½O 2  CO + 2H 2 . However, the reaction mechanism is very complex and has been studied extensively using various transition and noble metal catalysts with different supports [13]. Thermodynamically, the higher selectivity of synthesis gas (produced from CH 4 partial oxidation) is favoured at higher temperatures (>1000 °C) [14]. The production of synthesis gas at relatively moderate temperatures was recently reported where the researchers used multiple catalysts with different metal promoters and cobalt loadings [13,15].In this paper, the catalytic partial oxidation of CH 4 to synthesis gas was investigated using N 2 O as oxidant. The dissociation of N 2 O during catalytic reaction is a complex process and is expected to influence the partial oxidation mechanism of CH 4 [16,17]. We identified catalyst preparation . The process of cobalt loading (at pH of 8) was repeated 3 times (Co-ZSM-5 (S.P.) ).c) Incipient wetness impregnation was also used for loading cobalt onto a ZSM-5 support [20,19]. A mass of 2.50 g of cobalt (II) nitrate hexahydrate was dissolved in 1 ml of demineralized water.The cobalt solution was added drop wise to 9.5 g NH 4 -ZSM-5 in order to obtain a paste. The prepared catalyst is identified as Co-ZSM-5 (I.W.) .All catalysts were dried at 110 °C. Catalytic measurements...

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Catalytic partial oxidation of CH4 to H2 over cobalt catalysts at moderate temperatures

Cited by 29 publications

References 53 publications

Initialization of a methane-fueled single-chamber solid-oxide fuel cell with NiO+SDC anode and BSCF+SDC cathode

Initialization of a methane-fueled single-chamber solid-oxide fuel cell with NiO+SDC anode and BSCF+SDC cathode

Effects of Synthesis on the Structural Properties and Methane Partial Oxidation Activity of Ni/CeO2 Catalyst

Partial oxidation of methane with nitrous oxide forms synthesis gas over cobalt exchanged ZSM-5

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