A review of recent developments in hydrogen production via biogas dry reforming

Gao, Yuchen; Jiang, Jianguo; Meng, Yuan; Yan, Feng; Aihemaiti, Aikelaimu

doi:10.1016/j.enconman.2018.05.083

Cited by 321 publications

(141 citation statements)

References 192 publications

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“…After impregnation, the catalyst was dried in an oven at 110°C temperature for 24 hours. The catalyst was then calcined in air flow at 700°C for 2 hours . The prepared catalysts were characterized by carrying out XRF, XRD (Rigaku, Japan), H 2 ‐TPR, and BET (Quantachrome Instruments, USA) tests.…”

Section: Methodsmentioning

confidence: 99%

“…This ensures that the back mixing and channeling effects can be minimized in the packed‐bed reactor . Prior to reaction tests, the catalyst was reduced in situ at 700°C for 2 hours in 50% H 2 /N 2 at a flow rate of 50 mL/min . The catalyst activity test was performed from 600°C to 800°C.…”

Section: Methodsmentioning

confidence: 99%

“…They found that Rh can help to desorb SO x species formed on the support and sulfur poisoning of the Rh/CeO 2 catalysts can be retarded. In the review paper provided by Gao et al, effect of H 2 S in biogas on dry reforming was summarized, and guidelines for its industrial application in hydrogen production were provided. Another strategy facing the H 2 S poison problem is to remove H 2 S from the reactant in a similar way to syngas purification produced from coal gasification .…”

Section: Introductionmentioning

confidence: 99%

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H ₂ S effect on dry reforming of biogas for syngas production

Chein

Yang

2019

Int J Energy Res

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Summary The effect of hydrogen sulfide (H2S) on dry reforming of biogas for syngas production was studied both experimentally and theoretically. In the experimental work, the H2S effect on Ni‐based catalyst activity was examined for reaction temperatures ranging from 600°C to 800°C. It was found that the presence of H2S deactivated the Ni‐based catalysts significantly because of sulfur poisoning. Although bimetallic Pt‐Ni catalyst has better performance compared with monometallic Ni catalyst, deactivation was still found. The time‐on‐stream measured data also indicated that sulfur‐poisoned catalyst can be regenerated at high reaction temperatures. In the theoretical work, a thermodynamic equilibrium model was used to analyze the H2S removal effect in dry reforming of H2S‐contained biogas. Calcium oxide (CaO) and calcium carbonate (CaCO3) were used as the H2S sorbent. The results indicated that H2S removal depends on the initial H2S concentration and reaction temperature for both sorbents. Although CO2 was also removed by CaO, the results from equilibrium analysis indicated that the dry reforming reaction in the presence of CaO was feasible similar to the sorption enhanced water‐gas shift and steam‐methane reforming reactions. The simulation results also indicated that CaO was a more preferable H2S sorbent than CaCO3 because syngas with an H2/CO ratio closer to 2 can be produced and requires lower heat duty.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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H ₂ S effect on dry reforming of biogas for syngas production

Chein

Yang

2019

Int J Energy Res

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“…The majority of catalysts are based on Ni due to its high activity and low cost, whereas these catalysts usually undergo deactivation processes mainly due to carbon deposition; Noble metals have demonstrated much more resistance to carbon deposition than Ni catalysts, but are generally uneconomical. Furthermore, those catalysts could also be exploited to convert raw biogas (which mainly contains CH 4 and CO 2 ) into syngas . However, more attention is needed to develop sulfur‐resistant catalysts, because H 2 S is the main impurity in biogas …”

Section: Introductionmentioning

confidence: 99%

Advances in catalytic conversion of methane and carbon dioxide to highly valuable products

Cai

2019

Energy Science & Engineering

124

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Two typical processes have been developed for the conversion of methane and carbon dioxide to higher valuable products: dry reforming of methane (DRM) and CO2‐oxidative coupling of methane (CO2‐OCM). Numerous articles reviewed progresses in either DRM or CO2‐OCM, but no one covers both processes. In this review article, we systematically evaluated progresses in both DRM and CO2‐OCM processes for conversion of methane and CO2 to highly valuable products. Critical issues, which are carbon deposition and high energy cost for DRM and the contradiction between large activity and high selectivity for CO2‐OCM, were emphasized. Strategies to develop effective catalysts were evaluated, including the enhancement of metal‐support interactions, the introduction of promotors, the formation of solid solutions, and the construction of core‐shell structures. Plasma and photocatalysis were discussed as new promising technologies for DRM and CO2‐OCM.

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“…H 2 is the most effective and commonly used reducing agent ,. Other reducing agents are also used ,,.…”

Section: Introductionmentioning

confidence: 99%

Controlling the Reduction Extent for Metal Catalysts

Cheng

Ren

et al. 2019

ChemistrySelect

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Metal catalysts have been used extensively in addressing energy and environmental issues. A reduction process is often needed to activate these catalysts. However, there is a lack of techniques to accurately control this process, thus the chemical composition of the catalysts is usually unclear. Ni‐based catalysts are among the most commonly used due to their effectiveness and low costs. In this work, we use the reduction of a Ni/Al2O3 catalyst used in dry reforming of methane to demonstrate a novel technique that well controls the reduction extent of metal catalysts. We achieve this goal by using IR spectroscopy to monitor and quantify the reduction product, H2O, in the process. Specifically, we measure a full and a partial H2O production kinetics, and subsequently develop an algorithm to control the reduction extent of the Ni catalyst in a wide range. This algorithm is proved effective. The technique can be applied generally to any pretreatment process that involves IR measurable gases and its wide application would greatly promote the fundamental catalyst structure‐performance investigation.

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A review of recent developments in hydrogen production via biogas dry reforming

Cited by 321 publications

References 192 publications

H ₂ S effect on dry reforming of biogas for syngas production

H ₂ S effect on dry reforming of biogas for syngas production

Advances in catalytic conversion of methane and carbon dioxide to highly valuable products

Controlling the Reduction Extent for Metal Catalysts

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A review of recent developments in hydrogen production via biogas dry reforming

Cited by 321 publications

References 192 publications

H 2 S effect on dry reforming of biogas for syngas production

H 2 S effect on dry reforming of biogas for syngas production

Advances in catalytic conversion of methane and carbon dioxide to highly valuable products

Controlling the Reduction Extent for Metal Catalysts

Contact Info

Product

Resources

About

H ₂ S effect on dry reforming of biogas for syngas production

H ₂ S effect on dry reforming of biogas for syngas production