Production of hydrogen from catalytic steam reforming of bio-oil using C12A7-O--based catalysts

Abstract The production of hydrogen from the catalytic steam reforming of bio-oil, generated from fast pyrolysis of biomass, was investigated by using novel metal-doped catalysts of [Ca 24 Al 28 O 64 ] 4+ ·4O − /M (C12A7-O − /M, M = Mg, K, Ce). The features of the steam reforming of the bio-oil, including the effects of temperature, the metal-doped content and the S/C ratio (the ratio of mol steam to mol carbon fed) on the hydrogen yield, carbon conversion (mol carbon in production gases to mol carbon fed) and the distributions of the products were measured in the fixed-bed continuous flow reactor. It was found that the C12A7-O − /18% Mg catalyst gave the highest yield of hydrogen and the best carbon conversion among our tested catalysts. For the C12A7-O − /18% Mg catalyst, a hydrogen yield as high as 80% was obtained, and the maximum carbon conversion is up to 96% under the steam reforming condition (S/C > 4.0, GHSV = 10,000 h −1 , T  = 750 °C). The catalyst deactivation was mainly caused by the deposition of carbon (coke-formation). Initial catalyst activity can be partly maintained through periodic regeneration via the cleaning of the catalyst and the gasification of the carbon deposits. The catalyst characteristics and the intermediate species formed in the steam reforming processes were investigated by the XRD, XPS, ICP-AES and FT-IR measurements. The mechanism of the bio-oil steam reforming was addressed according to the above investigations.

[1]  Tomoko Watanabe,et al.  Adsorption of methane on magnesium oxide studied by temperature-programmed desorption and ab initio molecular orbital methods , 1991 .

[2]  J. Hoebink,et al.  An Investigation of the Oxygen Pathways in the Oxidative Coupling of Methane over MgO-Based Catalysts , 1996 .

[3]  Jens R. Rostrup-Nielsen,et al.  Industrial relevance of coking , 1997 .

[4]  David L. Trimm,et al.  Coke formation and minimisation during steam reforming reactions , 1997 .

[5]  María L. Salvador,et al.  Catalytic Steam Gasification of Pine Sawdust. Effect of Catalyst Weight/Biomass Flow Rate and Steam/Biomass Ratios on Gas Production and Composition , 1999 .

[6]  L. Lyons,et al.  Infra-red spectra of the crystalline inorganic aluminates , 1966 .

[7]  Fangsheng Huang,et al.  Substitution of H− for O− and H− emissions of 12CaO∙7Al2O3 , 2005 .

[8]  Meyer Steinberg,et al.  Modern and prospective technologies for hydrogen production from fossil fuels , 1989 .

[9]  M. Sadakata,et al.  One-step synthesis of phenol by O- and OH- emission material. , 2005, Chemical communications.

[10]  W. B. Hauserman.  High-yield hydrogen production by catalytic gasification of coal or biomass , 1994 .

[11]  Epaminondas Mastorakos,et al.  Hydrogen production from rich combustion in porous media , 2005 .

[12]  Daniel Montané,et al.  Hydrogen from Biomass: Steam Reforming of Model Compounds of Fast-Pyrolysis Oil , 1999 .

[13]  Stefan Czernik,et al.  Hydrogen by Catalytic Steam Reforming of Liquid Byproducts from Biomass Thermoconversion Processes , 2002 .

[14]  A. Bridgwater,et al.  An overview of fast pyrolysis of biomass , 1999 .

[15]  R. K. Datta.  Thermal Expansion of 12CaO°7Al2O3 , 1987 .

[16]  Daniel Montané,et al.  Biomass to hydrogen via fast pyrolysis and catalytic steam reforming of the pyrolysis oil or its fractions , 1996 .

[17]  J. Lunsford,et al.  Surface reactions of oxygen ions. I. Dehydrogenation of alkanes by oxygen(1-) ions on magnesium oxide , 1977 .

[18]  F. Meunier,et al.  Steam reforming of model compounds and fast pyrolysis bio-oil on supported noble metal catalysts , 2005 .

[19]  Jiang Zhu,et al.  Evaluation of genotoxicity of combined soil pollution by cadmium and phenanthrene on earthworm. , 2006, Journal of environmental sciences.

[20]  Jesús Arauzo,et al.  Catalytic pyrolysis of biomass: influence of the catalyst pretreatment on gas yields , 2001 .

[21]  Jiango Li,et al.  Mechanistic features for hydroxyl anion emission from the modified 12CaO.7Al2O3 surface. , 2005, The journal of physical chemistry. B.

[22]  Anthony V. Bridgwater,et al.  Advances in Thermochemical Biomass Conversion , 1993 .

[23]  C. Truong,et al.  Role of F centers in the oxidative coupling of methane to ethane over lithium-promoted magnesium oxide catalysts , 1992 .

[24]  V. Choudhary,et al.  Oxidative Conversion of Methane to Syngas over Nickel Supported on Commercial Low Surface Area Porous Catalyst Carriers Precoated with Alkaline and Rare Earth Oxides , 1997 .

[25]  Lucía García,et al.  Catalytic steam reforming of bio-oils for the production of hydrogen : effects of catalyst composition , 2000 .

[26]  Xifeng Zhu,et al.  A correlation between stoichiometrical ratio of fuel and its higher heating value , 2005 .

[27]  Tomoko Watanabe,et al.  Partial oxidation of methane with oxygen over magnesium oxide at low temperatures , 1993 .

[28]  Jiango Li,et al.  High Density Hydroxyl Anions in a Microporous Crystal: [Ca24Al28O64]4+·4(OH-) , 2005 .

[29]  Benjamin C. McLellan,et al.  Hydrogen production and utilisation opportunities for Australia , 2005 .

[30]  H. Hosono,et al.  Microporous Crystal 12CaO·7Al2O3 Encaging Abundant O- Radicals , 2002 .

[31]  A. Bridgwater,et al.  Overview of Applications of Biomass Fast Pyrolysis Oil , 2004 .

[32]  R. Bilbao,et al.  Hydrogen Production by Steam Reforming of Bio-Oil Using Coprecipitated Ni−Al Catalysts. Acetic Acid as a Model Compound , 2005 .

[33]  The energetics and electronic structure of defective and irregular surfaces on MgO , 1995, mtrl-th/9505001.

[34]  Charles N. Satterfield,et al.  Heterogeneous catalysis in industrial practice , 1991 .

[35]  P. Tsiakaras,et al.  Hydrogen production by ethanol steam reforming over a commercial Pd/γ-Al2O3 catalyst , 2004 .

[36]  Stefan Czernik,et al.  Production of Hydrogen from Biomass by Catalytic Steam Reforming of Fast Pyrolysis Oils , 1998 .

[37]  H. Hosono,et al.  Absolute emission current density of O− from 12CaO⋅7Al2O3 crystal , 2002 .

[38]  Anthony V. Bridgwater,et al.  Production of high grade fuels and chemicals from catalytic pyrolysis of biomass , 1996 .

[39]  K. Takanabe,et al.  Sustainable hydrogen from bio-oil - Steam reforming of acetic acid as a model oxygenate , 2004 .

[40]  Peter McKendry,et al.  Energy production from biomass (Part 2): Conversion technologies. , 2002, Bioresource technology.

[41]  H. Hosono,et al.  High-intensity atomic oxygen radical anion emission mechanism from 12CaO·7Al2O3 crystal surface , 2003 .

[42]  R. Spinicci.  Experimental analysis by transient methods of the behaviour of Y2O3 and CaO based catalysts for methane coupling , 1997 .

[43]  H. Hosono,et al.  Occurrence of superoxide radical ion in crystalline calcium aluminate 12CaO.7Al2O3 prepared via solid-state reactions , 1987 .

[44]  Jiango Li,et al.  Features and mechanism of H- anion emission from 12 CaO x 7 Al2O3 surface. , 2005, The journal of physical chemistry. B.

[45]  W. Sibley,et al.  Studies of OH− and OD− Ions in Magnesium Oxide. I. Distribution and Annealing of Hydroxyl and Deuteroxyl Ions , 1971 .

[46]  M. Aznar,et al.  Hydrogen Production by Biomass Gasification with Steam−O2 Mixtures Followed by a Catalytic Steam Reformer and a CO-Shift System , 2006 .