Sustainable hydrogen production for fuel cells by steam reforming of ethylene glycol: A consideration of reaction thermodynamics

Wang, Na; Perret, Noémie; Foster, Alexander

doi:10.1016/j.ijhydene.2011.01.140

Cited by 29 publications

(16 citation statements)

References 49 publications

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“…In this regard, production of a hydrogen rich stream by steam reforming (SR) of hydrocarbons or oxygen containing organic compounds has been investigated vastly [2,3]. Methane, methanol (MET), ethanol, acetic acid, and ethylene glycol (EG) are among the fuels most used as the source of hydrogen in steam reforming processes [2][3][4][5][6][7][8][9][10]. Apart from the prevalent fuels, the use of larger molecules such as dimethoxymethane (DMM) and trimethoxymethane (TMM) have attracted attention recently for production of hydrogen-rich gas via SR [11][12][13] or direct oxidation in low temperature fuel cells [13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Experimental study of 2-methoxyethanol steam reforming in a membrane reactor for pure hydrogen production

Hedayati

Llorca

2017

Fuel

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For the first time, 2-methoxyethanol (C3H8O2) was used for producing pure hydrogen in a catalytic membrane reactor (CMR) via steam reforming (SR). The SR experiments were performed at 923 K and 1–10 bar using a mixture of 2-methoxyethanol (MEX) and water at S/C ratio of 3. Moreover, SR experiments were performed under the same operating conditions using ethylene glycol (EG), methanol (MET), and a mixture of EG + MET, keeping a constant carbon molar flow rate into the CMR to study the reaction pathway through which 2-methoxyethanol is converted to SR products (CH4, CO, CO2, and H2). Hydrogen recovery values of up to 90% and pure hydrogen yields of 0.5 and 0.63 at 10 bar were reached in the case of the steam reforming of MEX and EG + MET, respectively. An outstanding value of 4 mol of pure hydrogen per mol of MEX was obtained at 10 bar. The presence of methanol promoted the SR of EG. The experimental results showed that 2-methoxyethanol is a promising source for producing hydrogen, especially in a CMR where a better efficiency (complete fuel conversion and high hydrogen yield) is reached.Peer ReviewedPostprint (author's final draft

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Section: Introductionmentioning

confidence: 99%

Experimental study of 2-methoxyethanol steam reforming in a membrane reactor for pure hydrogen production

Hedayati

Llorca

2017

Fuel

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“…In this study, the product gas distribution as a function of temperature was studied between 723 and 873 K at steady state conditions (see Figures a‐4c). The reaction products were H 2 , CH 4 , CO 2 and CO, as was also suggested previously ,. The rise in temperature resulted in increased H 2 production, whereas the concentrations of CH 4 , CO 2 and CO in the product were reduced.…”

Section: Assesment Of Catalytic Activity Of the Hybrid Materialsmentioning

confidence: 99%

“…In general, reactions like decomposition of methane and CO result in direct formation of coke . It is known that higher steam/EG ratios aid in suppressing carbon formation ,. At the same time, higher heat input needed to vaporize the excess water increases the overall capital costs.…”

Section: Influence Of Steam/eg Ratio On Sorption‐enhanced Reformingmentioning

confidence: 99%

Sorption‐Enhanced Steam Reforming of Ethylene Glycol over Dual Functional Hydrotalcite Materials Promoted with Pt and Ru

Dewoolkar

Vaidya

2017

ChemistrySelect

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Catalytic steam reforming of renewable bio-oxygenates coupled with on-site carbon dioxide (CO 2 ) capture is a potential option for sustainable hydrogen (H 2 ) production. The current work focuses on high-purity H 2 production over modified hydrotalcite (HTlc) based multi-functional hybrid materials via sorption-enhanced steam reforming of ethylene glycol. The unpromoted hybrid material (HM1) was copper-based HTlc, integrated with nickel. HM1 was promoted with platinum and ruthenium to yield two novel hybrid materials (Pt-HM1 and Ru-HM1). The performance of HM1, Pt-HM1 and Ru-HM1 was compared. Our lab-made hybrid materials exhibited encouraging performance, e. g., improved H 2 production, less by-product formation, long-term stability and no coking. Particularly, promotion of the hybrid materials with platinum and ruthenium proved beneficial, due to the high H 2 concentration in the product stream (98.6 and 93.2% for Pt-HM1 and Ru-HM1). Interestingly, the adsorption capacity of Ru-HM1 (1.3 mol CO 2 kg sorbent À1 ) was higher than that of Pt-HM1 (0.93 mol CO 2 kg sorbent À1 ) and HM1 (0.43 mol CO 2 kg sorbent À1 ) at their optimal conditions. The cyclic resilience of the hybrid materials was also encouraging. Ru-HM1, Pt-HM1 and HM1 remained durable for 22, 16 and 8 cycles, correspondingly. Finally, a likely reaction mechanism followed over the hybrid materials was proposed.

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“…The merits of coupling CO 2 removal with steam reforming (SR) in a single reactor for hydrogen generation have been extensively studied by means of thermodynamic analyses for methane 25–27. The equilibrium compositions of product gas from SESR of more complex feedstocks have also been calculated on model compounds such as ethanol,20 ethylene glycol,28 glycerol,18, 21 dextrose,24 soluble fraction from bio‐oil,10, 29 sorbitol,23 glucose23 and raw biomass 30. For all of these compounds, it has been found that the integration of in situ CO 2 removal from the gas phase during the reforming or gasification reactions will provide a unique possibility to shift the equilibrium boundary of the reforming and WGS reactions towards H 2 production, leading to significant enhancement in hydrogen production and purity.…”

Section: Thermodynamic Analysis Of Sesrmentioning

confidence: 99%

Sorption enhanced steam reforming (SESR): a direct route towards efficient hydrogen production from biomass‐derived compounds

Fermoso

Chen

2012

J of Chemical Tech & Biotech

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OVERVIEW: Efficient conversion of biomass to hydrogen is imperative in order to realize sustainable hydrogen production. Sorption enhanced steam reforming (SESR) is an emerging technology to produce high purity hydrogen directly from biomass‐derived oxygenates, by integrating steam reforming, water‐gas shift and CO2 separation in one‐stage. Factors such as simplicity of the hydrogen production process, flexibility in feedstock, high hydrogen yield and low cost, make the SESR process attractive for biomass conversion to fuels. IMPACT: Recent work has demonstrated that SESR of biomass‐derived oxygenates has greater potential than conventional steam reforming for hydrogen production. The flexibility of SESR processes resides in the diversity of feedstocks, which can be gases (e.g. biogas, syngas from biomass gasification), liquids (e.g. bioethanol, glycerol, sugars or liquid wastes from biomass processing) and solids (e.g. lignocellulosic biomass). SESR can be developed to realize a simple biomass conversion process but with high energy efficiency. APPLICATIONS: Hydrogen production by SESR of biomass‐derived compounds can be integrated into existing oil refineries and bio‐refineries for hydrotreating processing, making the production of gasoline and diesel greener. Moreover, hydrogen from SESR can be directly fed to fuel cells for power generation. Copyright © 2012 Society of Chemical Industry

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Sustainable hydrogen production for fuel cells by steam reforming of ethylene glycol: A consideration of reaction thermodynamics

Cited by 29 publications

References 49 publications

Experimental study of 2-methoxyethanol steam reforming in a membrane reactor for pure hydrogen production

Experimental study of 2-methoxyethanol steam reforming in a membrane reactor for pure hydrogen production

Sorption‐Enhanced Steam Reforming of Ethylene Glycol over Dual Functional Hydrotalcite Materials Promoted with Pt and Ru

Sorption enhanced steam reforming (SESR): a direct route towards efficient hydrogen production from biomass‐derived compounds

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