Syngas Production by Methane Reforming with Carbon Dioxide on Noble Metal Catalysts

Rezaei, Mehran; Alavi, Seyed Mehdi; Sahebdelfar, Saeed; Zhang, Yan

doi:10.1016/s1003-9953(07)60014-0

Cited by 124 publications

(68 citation statements)

References 18 publications

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“…It is quite surprising that at 500°C reaction temperature, all catalysts showed CO 2 conversion (Fig. 4a) greater than corresponding CH 4 (Fig. 4b) conversion, while at higher temperatures opposite results are obtained.…”

Section: Catalytic Performancementioning

confidence: 77%

“…4b) conversion, while at higher temperatures opposite results are obtained. In fact the higher conversion of CO 2 than CH 4 , at 500°C, indicates the occurrence of the reverse water gas shift (RWGS) reaction (CO 2 + H 2 ↔ H 2 O + CO; ΔH 298 = +41 kJ/mol) [8]. On the other hand, the higher CH 4 conversion than CO 2 at reaction temperature > 500°C is probably due to the occurrence of methane cracking reaction.…”

Section: Catalytic Performancementioning

confidence: 95%

“…The catalytic performance of polyol catalysts, in terms of CH 4 and CO 2 conversions, at various temperatures is illustrated in Fig. 4.…”

Section: Catalytic Performancementioning

confidence: 99%

“…drawback of DRM is its endothermic nature which requires fairly high temperatures to achieve high conversion values. This severe operating condition could cause catalyst deactivation due to accumulation of coke over catalyst surface and/or sintering of the active metal particles [4]. Generally, the catalysts used for the DRM are categorized into two groups: (i) supported noble metals (Pt, Pd, Rh, Ru) and (ii) non-noble transition metals (Ni, Co, Fe) [5].…”

Section: Introductionmentioning

confidence: 99%

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Syngas Production from Dry Reforming of Methane over Nano Ni Polyol Catalysts

Naeem¹,

Al‐Fatesh²,

Khan³

et al. 2013

IJCEA

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Abstract-Dry reforming of methane (DRM) is an environment friendly process since it utilizes two major greenhouse gases (CH 4 and CO 2 ) to produce valuable syngas. Polyol process was adopted to prepare nano supported (Al 2 O 3 , ZrO 2 and CeO 2 ) Ni based nano catalysts for DRM reaction. All catalysts were prepared in ethylene glycol medium with polyvinylpyrrolidone as a nucleation-protective agent. The main objective of this study was to develop a suitable catalyst, for syngas production, which possessed high activity, stability and minimum coking rate during DRM. The catalytic activities of the prepared catalysts were evaluated in the temperature range 500-800°C. The obtained results revealed that catalytic performance depends on the nature of support. Amongst all tested catalysts, Ni-Zr Pol showed highest activity (87.2%) and stability (%D.F= -0.46). On the other hand Ni-Al Pol catalyst exhibited acceptable activity (84.8%) with minimum coking rate (0.015 g/g cat .h) while Ni-Ce Pol showed smallest activity (83.2%) with large amount of coke deposition (0.025 g/g cat .h).Index Terms-CO 2 /CH 4 reforming, nano-Ni, nano support, polyol method, activity.

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Section: Catalytic Performancementioning

confidence: 77%

Section: Catalytic Performancementioning

confidence: 95%

“…The catalytic performance of polyol catalysts, in terms of CH 4 and CO 2 conversions, at various temperatures is illustrated in Fig. 4.…”

Section: Catalytic Performancementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Syngas Production from Dry Reforming of Methane over Nano Ni Polyol Catalysts

Naeem¹,

Al‐Fatesh²,

Khan³

et al. 2013

IJCEA

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“…Nickel was as active as noble metals and thus became a promising alternative, especially that it is cheap and readily available [1][2][3][4]. However, Ni particles could still suffer from sintering or coke formation at high temperature, which drastically affects the catalytic performances.…”

Section: Introductionmentioning

confidence: 99%

Effect of pore geometry of mesoporous supports on catalytic performances in methane reforming

et al. 2018

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Abstract-Catalysts prepared using three dimensional SBA-16 silica support (composed of micropores and cage-like mesopores) were tested in the reaction of methane dry reforming, in comparison with 2D hexagonal mesoporous SBA-15 support. The samples were evaluated by N2 sorption and X-Ray diffraction (XRD) for the assessment of their textural and structural properties. The reducibility was characterized by temperature programmed reduction (TPR). The catalytic performances were evaluated in methane dry reforming and spent catalysts (after reaction) were characterized for the evaluation of sintering and coke formation by TPH/MS, XRD and HR-TEM.

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