Dry reforming of methane has no future for hydrogen production: Comparison with steam reforming at high pressure in standard and membrane reactors

Oyama, S. Ted; Hacarlioglu, P.; Gu, Yu; Lee, Doohwan

doi:10.1016/j.ijhydene.2011.09.149

Cited by 182 publications

(104 citation statements)

References 30 publications

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“…The products from the process were mainly gases, however a small amount of water was found in the condenser system. Oyama et al [25] suggested that the production of water was due to the reverse water gas shift reaction (RWGS). From Table 3, the addition of carbon dioxide into the system resulted in an increase in hydrogen production from 20.…”

Section: Resultsmentioning

confidence: 99%

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Influence of process conditions on syngas production from the thermal processing of waste high density polyethylene

Saad

Nahil

Williams

2015

Journal of Analytical and Applied Pyrolysis

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A range of process conditions, including the type of reactor, the reacting atmosphere and the presence of catalyst, and their influence on the production of syngas i.e. hydrogen and carbon monoxide, from the thermal processing of waste high density polyethylene (HDPE) has been investigated. Pyrolysis in the presence of nitrogen and in the presence of carbon dioxide, two-stage pyrolysis-steam reforming and carbon dioxide/catalysis process conditions were investigated in relation to gas composition and particularly hydrogen and carbon monoxide yield. The influence of addition of a Ni-Mg-Al catalyst in the second reactor was also investigated. It was found that a two-stage pyrolysis at 500 °C, followed by second stage reaction at 800 °C resulted in a significant increase in hydrogen production. With the addition of carbon dioxide, the two stage process also increased carbon monoxide yield in addition to hydrogen. Addition of steam into the second stage reactor with the carbon dioxide produced a further increase in hydrogen production. Also, the presence of a Ni-Mg-Al catalyst in the second reactor increased the amount of hydrogen and carbon monoxide produced.

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Section: Resultsmentioning

confidence: 99%

“…In this work, the carbon dioxide conversion was calculated according to the formula reported by several researchers; Albarazi et al, Asencios et al and Oyama et al [23][24][25]. The properties of the carbonaceous coke deposited on the reacted catalysts were determined by temperature-programmed oxidation (TPO) experiments.…”

Section: Gas Analysismentioning

confidence: 99%

Influence of process conditions on syngas production from the thermal processing of waste high density polyethylene

Saad

Nahil

Williams

2015

Journal of Analytical and Applied Pyrolysis

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“…Long-term DRM was also carried out with Ni/Mg.Al.550.CA ( Figure 11). The reaction was implemented at a considerably high WHSV of 170 L/(gcat × h) compared to the literature data [6]. The conversions of CH4 and CO2 are very close to the thermodynamic limitations for CH4 (82%) and CO2 (86%) [49].…”

Section: Activity Of Mgal Supported Catalystsmentioning

confidence: 89%

“…The syngas from DRM with a low ratio of H 2 /CO is suitable for subsequent syntheses of oxygenated chemicals [5] and hydrocarbons via the Fischer-Tropsch synthesis [6]. However, DRM requires a high reaction temperature [7].…”

Section: Introductionmentioning

confidence: 99%

Development of Active and Stable Low Nickel Content Catalysts for Dry Reforming of Methane

Armbruster

Atia

et al. 2017

Catalysts

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Methane dry reforming (DRM) was investigated over highly active Ni catalysts with low metal content (2.5 wt %) supported on Mg-Al mixed oxide. The aim was to minimize carbon deposition and metal sites agglomeration on the working catalyst which are known to cause catalyst deactivation. The solids were characterized using N 2 adsorption, X-ray diffraction, temperature-programmed reduction, X-ray photoelectron spectroscopy, and UV-Vis diffuse reflectance spectroscopy. The results showed that MgO-Al 2 O 3 solid solution phases are obtained when calcining Mg-Al hydrotalcite precursor in the temperature range of 550-800 • C. Such phases contribute to the high activity of catalysts with low Ni content even at low temperature (500 • C). Modifying the catalyst preparation with citric acid significantly slows the coking rate and reduces the size of large octahedrally coordinated NiO-like domains, which may easily agglomerate on the surface during DRM. The most effective Ni catalyst shows a stable DRM course over 60 h at high weight hourly space velocity with very low coke deposition. This is a promising result for considering such catalyst systems for further development of an industrial DRM technology.

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“…The DRM reaction produces a low syngas ratio (H 2 /CO = 1), which is appropriate for the synthesis of oxygenated chemicals (Wurzel et al 2000) and hydrocarbons from FischerTropsch synthesis (Oyama et al 2012). Syngas from DRM can also be used to store solar or nuclear energy (Levy et al 1992) through the chemical energy transmission system.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of a novel 3 %Ru/CeZr0.5GdO4 nanocatalyst and its application in the dry and steam reforming of methane

Shariatinia‬

Khani

Bahadoran³

2015

Int. J. Environ. Sci. Technol.

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A novel 3 %Ru/CeZr 0.5 GdO 4 nanocatalyst was synthesized by the wet impregnation method and evaluated for its catalytic activity in dry and steam reforming of methane at atmospheric pressure, seven various temperatures (from 500 to 800°C) and two different gas hourly space velocity values (7000, 10,500 h -1 ). The thermogravimetric diagrams of the used catalysts did not illustrate any carbon deposition on the catalysts applied in both the dry and steam reforming processes and this valuable phenomenon was supported by the scanning electron microscopy images. The low onset reduction temperature in the temperature-programmed reduction profile of the 3 %Ru/ CeZr 0.5 GdO 4 at 183.21°C reflected much convenient reducibility/oxygen mobility property of the catalyst. Comparing the CH 4 conversions in the dry reforming (92 %) and steam reforming (97 %) reactions using the gas hourly space velocity = 10,500 h -1 at 800°C indicated higher efficiency of the steam reforming process. The time on stream experiments for the dry and steam reforming reactions exhibited that the CH 4 and CO 2 conversions are almost constant (and even they are slightly increased in the dry reforming) after 30 h reflecting the catalyst outstanding stability with time, absence of coke deposition and catalyst very high activity.

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Dry reforming of methane has no future for hydrogen production: Comparison with steam reforming at high pressure in standard and membrane reactors

Cited by 182 publications

References 30 publications

Influence of process conditions on syngas production from the thermal processing of waste high density polyethylene

Influence of process conditions on syngas production from the thermal processing of waste high density polyethylene

Development of Active and Stable Low Nickel Content Catalysts for Dry Reforming of Methane

Synthesis of a novel 3 %Ru/CeZr0.5GdO4 nanocatalyst and its application in the dry and steam reforming of methane

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