Glycerol steam reforming over Ni/γ-Al2O3 catalysts modified by metal oxides

Huang, Zun-Yu; Xu, Chenghua; Liu, Chuan-Qi; Xiao, He; Chen, Jun; Zhang, Yongxiang; Lei, Ya-Cong

doi:10.1007/s11814-012-0204-z

Cited by 24 publications

(9 citation statements)

References 23 publications

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“…It has been found that the use of low amounts of Mg(II) promoter leads to higher metal dispersion, thus favoring glycerol conversion into gaseous products, while higher loadings result in lower coke deposition [20]. Other basic promoters such as Mo [66,[79][80][81][82][83] and Ca [66,69,79] have also been reported to enhance the GSR performance of non-promoted catalyst, for the same reasons previously mentioned for basic modifiers. Huang et al [66] observed that the simultaneous presence of Mo-La-Ca inhibits the interaction between nickel and the commercial Ca-containing Linde-type 5A zeolite support, thus resulting in a remarkable stability during GSR (no deactivation during 100 h time-on-stream).…”

Section: Effect Of the Addition Of A Promoter On The Catalytic Performentioning

confidence: 85%

Challenges and strategies for optimization of glycerol steam reforming process

Silva

Soria

Madeira

2015

Renewable and Sustainable Energy Reviews

203

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The steam reforming of the main biodiesel by-product, glycerol, has been catching up the interest of the scientific community in the last years. The use of glycerol for hydrogen production is an advantageous option not only because glycerol is renewable but also because it's use would lead to the decrease of the price of biodiesel, thus making it more competitive. Consequently, the use of biodiesel at large scale would significantly reduce CO2 emissions comparatively to fossil fuels. Moreover, hydrogen itself is seen as a very attractive clean fuel for transportation purposes.Therefore, the industrialization of the glycerol steam reforming (GSR) process would have a tremendous global environmental impact. In the last years, intensive research regarding GSR thermodynamics, catalysts, reaction mechanisms and kinetics, and innovative reactor configurations (sorption enhanced reactors (SERs) and membrane reactors (MRs)) has been done, aiming for improving the process effectiveness. In this review, the main challenges and strategies adopted for optimization of GSR process are addressed, namely the GSR thermodynamic aspects, the last developments on catalysis and kinetics, as well as the last advances on GSR performed in SERs and MRs.

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Section: Effect Of the Addition Of A Promoter On The Catalytic Performentioning

confidence: 85%

Challenges and strategies for optimization of glycerol steam reforming process

Silva

Soria

Madeira

2015

Renewable and Sustainable Energy Reviews

203

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“…It is naturally produced as by-product through the transesterification process of biodiesel. It was estimated that approximate 10% of crude glycerol will be produced from the transesterification process [4][5][6] and it was expected to grow dramatically in the near future. Rising demand of biodiesel led towards prompt production of glycerol.…”

Section: Introductionmentioning

confidence: 99%

“…In syngas technologies, Nickel (Ni), which categorized as a transition metal is predominantly used as a catalyst due to its viability and low cost compared to platinum (Pt), palladium (Pd) and rhodium (Rh) [5,[16][17][18]. According to Saad et al [19], Ni was chosen as based catalyst in reforming process due to its high catalytic activity and stability.…”

Section: Introductionmentioning

confidence: 99%

“…The primary drawback of Ni related to coke formation and sintering of Ni particles where it cause the catalyst to rapidly deactivate due to losses of surface area [8,20]. Previous research found that introduction of an alkaline earth oxide (MgO and CaO) and rare earth oxides (La2O3 and CeO) would help to inhibit the formation of coke [5,13,19]. Magnesium Oxide (MgO), Aluminium oxide (Al2O3), Titanium dioxide (TiO2), cement clinker, Zirconium oxide (ZrO2) and Calcium oxide (CaO) are the example of supports that has been explored in the glycerol reforming process.…”

Section: Introductionmentioning

confidence: 99%

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Carbon Dioxide Dry Reforming of Glycerol for Hydrogen Production using Ni/ZrO2 and Ni/CaO as Catalysts

Arif

Azizan

et al. 2016

Bull. Chem. React. Eng. Catal.

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Glycerol, byproduct from the biodiesel production can be effectively utilized as the promising source of synthesis gas (syngas) through a dry reforming reaction. Combination of these waste materials with greenhouse gases which is carbon dioxide (CO2) will help to reduce environmental problem such as global warming. This dry reforming reaction has been carried out in a fixed bed batch reactor at 700 °C under the atmospheric pressure for 3 hours. In this experiment, reforming reaction was carried out using Nickel (Ni) as based catalyst and supported with zirconium (ZrO2) and calcium (CaO) oxides. The catalysts were prepared by wet impregnation method and characterized using Bruanaer-Emmett-Teller (BET) surface area, Scanning Electron Microscopy (SEM), X-ray Diffraction (XRD), Thermo Gravimetric (TGA), and Temperature Programmed Reduction (TPR) analysis. Reaction studies show that 15% Ni/CaO give the highest hydrogen yield and glycerol conversion that peaked at 24.59% and 30.32%, respectively. This result is verified by XRD analysis where this catalyst shows low crystallinity and fine dispersion of Ni species resulted in high specific surface area which gives 44.93 m2/g that is validated by BET. Copyright © 2016 BCREC GROUP. All rights reservedReceived: 21st January 2016; Revised: 24th February 2016; Accepted: 29th February 2016How to Cite: Arif, N.M.M., Vo, D.V.N., Azizan,M.T., Abidin S.Z. (2016). Carbon Dioxide Dry Reforming of Glycerol for Hydrogen Production using Ni/ZrO2 and Ni/CaO as Catalysts. Bulletin of Chemical Reaction Engineering & Catalysis, 11 (2): 200-209 (doi:10.9767/bcrec.11.2.551.200-209)Permalink/DOI: http://dx.doi.org/10.9767/bcrec.11.2.551.200-209

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“…Los metales alcalinotérreos han sido los aditivos más utilizados para disminuir los depósitos de carbón. Entre otros, destacan el Mg [232][233][234] y Ca [235][236][237], los cuales que confieren un carácter básico al catalizador, desfavoreciendo la formación de precursores de coque como el etileno. El carácter básico de estos metales parece promover la adsorción de O2, mientras que la presencia de grupos -OH aumentarían su movilidad en la superficie del catalizador favoreciendo la gasificación de los precursores de coque formados [232,237].…”

Section: Reformado Con Glicerina Con Vapor De Agua (Rgva) Estado Delunclassified

Desarrollo de catalizadores heterogéneos para la producción sostenible de hidrógeno a partir del reformado de subproductos y residuos derivados de la biomasa.

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Glycerol steam reforming over Ni/γ-Al2O3 catalysts modified by metal oxides

Cited by 24 publications

References 23 publications

Challenges and strategies for optimization of glycerol steam reforming process

Challenges and strategies for optimization of glycerol steam reforming process

Carbon Dioxide Dry Reforming of Glycerol for Hydrogen Production using Ni/ZrO2 and Ni/CaO as Catalysts

Desarrollo de catalizadores heterogéneos para la producción sostenible de hidrógeno a partir del reformado de subproductos y residuos derivados de la biomasa.

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