Reforming Of Biogas Research Articles

Comparative Techno-Economic Modelling of Large-Scale Thermochemical Biohydrogen Production Technologies to Fuel Public Buses: A Case Study of West Midlands Region of England

This work presents techno-economic modelling of four thermochemical technologies that could produce nearly 20,500 tonnes of hydrogen per year from biomass for public bus transport. These included fluidised bed (FB) steam gasification, fast pyrolysis-FB gasification, fast pyrolysis-steam reforming, and steam reforming of biogas from anaerobic digestion (AD). Each plant was modelled on ASPEN plus with and without carbon capture and storage (CCS), and their process flow diagrams, mass and energy balances used for economic modelling. Payback periods ranged from 6.7 to 7 years. For operations with CCS, in which the captured CO 2 was sold, FB gasification gave the lowest minimum hydrogen selling price of $2.84/kg. This was followed by AD-biogas reforming ($3.67/kg), while pyrolysis-reforming and pyrolysis-gasification giving $6.58/kg and $7.49/kg, respectively. Hydrogen selling prices were sensitive to raw material costs and internal rates of return, while revenue from selling CO 2 was very important to make biohydrogen production cost competitive. FB gasification and AD-biogas reforming with CCS could deliver hydrogen at less than $4/kg when CO 2 was sold at above $75/tonne. This study showed that thermochemical technologies could produce cheaper biohydrogen to extend the current use of electrolytic hydrogen-fuelled buses in Birmingham to the wider West Midlands region.

A Study of Thermodynamic Equilibrium Analysis and Optimized Reaction Conditions for Combined Steam Reforming of Biogas

A Study of Thermodynamic Equilibrium Analysis and Optimized Reaction Conditions for Combined Steam Reforming of Biogas

Effect of Calcination Time on the Catalytic Activity of Ni/γ-Al2O3 Cordierite Monolith for Dry Reforming of Biogas

Ni/γ-Al2O3 wash coated cordierite monolith catalysts are calcined in air at 800 °C for 4, 10, and 20 h in order to study the effect of calcination time on the activity of the catalysts for dry reforming of model biogas. Catalytic activity studies are performed at 800 °C with three different CH4/CO2 ratios of 1.0, 1.5, and 2.0. The catalyst calcined for the longest time (C-20) displays higher stability and activity in terms of CH4 and CO2 conversion compared to those calcined for 4 h (C-4) and 10 h (C-10). XRD data and TPR analysis detect the maximum amount of NiAl2O4/MgAl2O4 phases and strongest metal-support interaction, respectively, for the C-20 sample. FESEM reveals the particle size of the calcined and reduced C-20 sample to be smaller than that of the C-4 and C-10 samples. Whereas, H2 pulse-chemisorption characterization demonstrates the highest metal surface area, metal dispersion, and smallest Ni particle size for the C-20 catalyst. While, no carbon deposition on any catalyst occurs for the CH4/CO2 ratio of one, lowest amount of carbon nanotubes is formed on the C-20 sample for the CH4/CO2 ratio of 1.5 and 2.0, as observe by DTA-TGA. EDX reveals concentration variation of Mg and Si from the cordierite monolith wall along the thickness of the coating for all the samples. In addition, the maximum amount of these elements is observed for the calcined C-20 catalyst coating. These implies that the diffusion of Mg and Si from the cordierite monolith to the catalyst coating during calcination contribute significantly in controlling the physicochemical properties of the catalysts. As a result, the higher stability and activity of the C-20 could be attributed to the formation of higher amount of the Ni– Mg- alumina spinel complex in the catalyst coating during longer calcination time, which leads to the improved metal-support interaction and higher nickel dispersion over monolith.

Evaluating the drop of electrochemical performance of Ni/YSZ and Ni/ScSZ solid oxide fuel cells operated with dry biogas

SummaryThis work is aimed at evaluating the influence of carbon deposition on the power density drop of in‐house fabricated Ni/YSZ and Ni/ScSZ solid oxide fuel cells (SOFCs) operating in dry internal reforming of simulated biogas (CH4/CO2 = 2). An immediate drop of open‐circuit voltage (OCV) and maximum power densities is observed when the fuel changes from hydrogen to biogas, 86.5% and 33.3% for the Ni/YSZ and Ni/ScSZ cells, respectively with mass transfer polarisation dominates Ni/YSZ polarisation. Carbon deposition is investigated as the cause of the reduction in performance by quantification of deposited carbon by temperature programmed oxidation (TPO) and catalytic activity test. Results from TPO analysis show unexpectedly higher amount of carbon on the Ni/ScSZ cells (2.35 × 10−3 mgC/mgcat) as compared to Ni/YSZ (5.68 × 10−4 mgC/mgcat) despite higher performance of the former. Catalytic activity tests reveal a low carbon oxidation rate compared to an initially higher methane decomposition reaction, leading to carbon deposition in both cells, in which the methane decomposition reaction of Ni/ScSZ is higher. Different effects are observed on the pellets, where the carbon deposited on Ni/YSZ deactivates the reforming reaction sites as quick as 20 minutes into the operation, whereas carbon deposited on the Ni/ScSZ pellet did not show the same blocking effect on the catalyst due to the different carbon morphology formed. A graphitic whisker‐like rod structure is observed on Ni/ScSZ while amorphous non‐crystalline carbon covers the Ni/YSZ pellets with 3 hours exposure to high methane content dry biogas (CH4/CO2 = 2). The difference of carbon structure affects the amount of carbon quantified in the TPO analysis where most of the amorphous carbon oxidises while some of the graphitic carbon deposits remain.

Combined Reforming of Clean Biogas over Nanosized Ni–Rh Bimetallic Clusters

The combined steam/dry reforming of clean biogas (CH4/CO2 = 50/50 v/v) represents an innovative way to produce synthesis gas (CO + H2) using renewable feeds, avoiding to deplete the fossil resources and increase CO2 pollution. The reaction was carried out to optimize the reaction conditions for the production of a syngas with a H2/CO ratio suitable for the production of methanol or fuels without any further upgrading. Ni-Rh/Mg/Al/O catalysts obtained from hydrotalcite-type precursors showed high performances in terms of clean biogas conversion due to the formation of very active and resistant Ni-Rh bimetallic nanoparticles. Through the utilization of a {Ni10Rh(CO)19}{(CH3CH2)4N}3 cluster as a precursor of the active particles, it was possible to promote the Ni-Rh interaction and thus obtain low metal loading catalysts composed by highly dispersed bimetallic nanoparticles supported on the MgO, MgAl2O4 matrix. The optimization of the catalytic formulation improved the size and the distribution of the active sites, leading to a better catalyst activity and stability, with low carbon deposition with time-on-stream.

Sustainable H2 generation via steam reforming of biogas in membrane reactors: H2S effects on membrane performance and catalytic activity

This study proposes the steam reforming of a synthetic biogas stream containing 200 ppm of H2S, carried out in a non-commercial supported Pd–Au/Al2O3 membrane reactor (7–8 μm selective layer thickness) at 823 K and 150 kPa over a non-commercial Rh(1%)/MgAl2O4/Al2O3 catalyst. This system is able to recover almost 80% of the total hydrogen produced during the reaction and shows good resistance to the H2S contamination, as confirmed by stable methane conversions for more than 400 h under operation. For comparison, the same reaction was carried out in a commercial self-supported Pd–Ag membrane (150 μm wall thickness), yielding a hydrogen recovery equal to 40% at 623 K and 200 kPa, and presenting stable methane conversions for less than 200 h under operation due to the effect of the H2S contamination.

System optimization for effective hydrogen production via anaerobic digestion and biogas steam reforming

To construct a system for the effective hydrogen production from food waste, the conditions of anaerobic digestion and biogas reforming have been investigated and optimized. The type of agitator and reactor shape affect the performance of anaerobic digestion reactors. Reactors with a cubical shape and hydrofoil agitator exhibit high performance due to the enhanced axial flow and turbulence as confirmed by simulation of computational fluid dynamics. The stability of an optimized anaerobic digestion reactor has been tested for 60 days. As a result, 84 L of biogas is produced from 1 kg of food waste. Reaction conditions, such as reaction temperature and steam/methane ratio, affect the biogas steam reforming reaction. The reactant conversions, product yields, and hydrogen production are influenced by reaction conditions. The optimized reaction conditions include a reaction temperature of 700 °C and H2O/CH4 ratio of 1.0. Under these conditions, hydrogen can be produced via steam reforming of biogas generated from a two-stage anaerobic digestion reactor for 25 h without significant deactivation and fluctuation.

Exsolution of Ni nanoparticles on the surface of cerium and nickel co-doped lanthanum strontium titanate as a new anodic layer for DIR-SOFC. Anti-coking potential and H2S poisoning resistance of the prepared material

The aim of this study was to evaluate a new catalytic material for biogas-fuelled DIR-SOFCs. This material was a perovskite-type SrTiO3 doped with La, Ce and Ni of a general formula La0.27Sr0.54Ce0.09Ni0.1Ti0.9O3-σ (LSCNT). Additional preparation steps were undertaken to promote a nickel exsolution process. Heat post-treatment of powders in a humidified H2 resulted in an intensive growth of nickel nanoparticles (NPs) while the reduction temperature was increased gradually from 800 to 1200 °C. A selected reduction temperature equal to 900 °C gave the NPs an average size of 22 nm. The prepared material was used as a functional layer deposited onto the anodic site of a Ni/YSZ-supported SOFC to promote the effective reforming of synthetic and H2S-contaminated biogas at 750 °C. It was found that after 130 h of operation in a 60% CH4/40% CO2 mixture, the fuel cell with an additional LSCNT layer showed higher power density, and no carbon deposits were observed. However, 20 ppm of H2S present in the fuel caused a full deactivation of both the reference and SOFC with LSCNT layer. Cyclic tests in sour biogas revealed that the fabricated anodic layer is much more resistant to sulfur poisoning compared to a bare Ni/YSZ anode. Recovery of overall performance after 3 poisoning cycles was nearly 90% for the fuel cell with the LSCNT layer, while the unmodified one reached only 75%. The concentrations of the exhaust gases, such as CH4, CO2, and CO, were continuously measured in situ using a FTIR-based technique. A thermochemical analysis revealed that the investigated material ensured much better biogas reforming stability over the whole testing time and strongly promoted catalytic reactions.

Investigation of praseodymium and samarium co-doped ceria as an anode catalyst for DIR-SOFC fueled by biogas

The Pr and Sm co-doped ceria (with up to 20 mol.% of dopants) compounds were examined as catalytic layers on the surface of SOFC anode directly fed by biogas to increase a lifetime and the efficiency of commercially available DIR-SOFC without the usage of an external reformer.The XRD, SEM and EDX methods were used to investigate the structural properties and the composition of fabricated materials. Furthermore, the electrical properties of SOFCs with catalytic layers deposited on the Ni-YSZ anode were examined by a current density-time and current density-voltage dependence measurements in hydrogen (24 h) and biogas (90 h). Composition of the outlet gasses was in situ analysed by the FTIR-based unit.It has been found out that Ce0.9Sm0.1O2-δ and Ce0.8Pr0.05Sm0.15O2-δ catalytic layers show the highest stability over time and thus are the most attractive candidates as catalytic materials, in comparison with other investigated lanthanide-doped ceria, enhancing direct internal reforming of biogas in SOFCs.

On the effect of biogas composition on the H2 production by sorption enhanced steam reforming (SESR)

Abstract Biogas is a valuable source of renewable energy produced from biodegradable organic materials via anaerobic digestion. The production of H2 by sorption enhanced steam reforming (SESR) of biogas has been studied thermodynamic and experimentally. A Pd/Ni–Co catalyst and dolomite as CO2 sorbent were used. The effect of biogas composition (CH4/CO2 vol%) on the process was evaluated at 600 and 650 °C in a fluidized bed reactor using biogas CO2 concentrations of 5–50 vol%. During conventional biogas steam reforming (SR), high CH4 partial pressures in the feed favor the process, producing high H2 concentrations. During biogas SESR, CO2 was effectively removed from the gas phase by the sorbent for all the biogas compositions, and it did not alter the process compared to pure methane. Steam methane reforming (SMR) and water-gas shift (WGS), together with carbonation, were the main reactions occurring during biogas SESR. Dry (or CO2) methane reforming did not occur under the conditions studied due to the relatively low temperature and the presence of steam. High H2 purity (98.4 vol%) and H2 yield (91%) were experimentally obtained, pointing out the biogas SESR as a promising technology for the efficient production of high-purity high-yield hydrogen from a renewable source.

Utilization of renewable sources of biogas for small-scale production of liquid fuels

Low energy density in agricultural or biotechnological raw materials dictates the need for their local processing. Small-scale agricultural products or waste processing plants can`t profitably use technologies common in large-scale petrochemistry, including the complex and expensive process of steam reforming of biogas into syngas for its subsequent conversion to liquid fuel. The work suggests using small-scale sources of inexpensive and easily obtained biogas and other renewable hydrocarbon gases for the production of liquid biofuel by their air conversion in recently developed matrix reformers into low-cost nitrogen-rich syngas, followed by Fischer-Tropsch synthesis in a cascade of sequential reactors. Autothermal matrix reformers are very compact, simple in design, have several times more specific volume capacity than traditional technologies, and allow processing biogas with a high concentration of CO2. The advantages of low-cost conversion of biogas to liquid fuel based on nitrogen- enriched syngas with subsequent Fischer-Tropsch synthesis are discussed.

Hydrogen augmentation of biogas through dry reforming over bimetallic nickel-cobalt catalysts supported on titania

The nickel and cobalt bimetallic catalysts (with 11 wt% metals content) supported on Titania were synthesized through wet-impregnation approach and investigated for biogas reforming. The catalysts were characterized using BET analysis, X-ray diffraction (XRD), Field-emission Scanning Electron Microscope (FESEM), and H2-temperature programmed reduction (H2-TPR) techniques. The H2-TPR analysis revealed that bimetallic catalysts have sturdy metal-support synergy which restrains the metallic sintering. The catalytic activity for biogas reforming was explored under ambient pressure condition with temperature varying from 650 to 900 ˚C and GHSV range of 24,000 to 72,000 ml/g/h with CH4/CO2 ratio of 1.5. The experimental results revealed that the catalytic performance is strongly dependent on the appropriate Ni/Co ratio for bimetallic catalysts. The bimetallic catalyst (7 wt.%) Ni-(4 wt.%) Co/TiO2 showed better catalytic activity and stability due to the synergistic effects of Ni and Co. The Ni/Co ratio could be fine-tuned to enhance pore textural properties, which assisted the metal particle distribution and led to reduction in metallic particle size, increment in activity, and retardation to coke deposition. At 900 °C, (7 wt.%) Ni-(4 wt.%) Co/TiO2 catalyst showed 87.13% CH4 and 92.6% CO2 conversion with 41.1% H2 production. The bimetallic catalysts also withstand the catalytic performance during 15 h of continuous reforming as an insignificant decrease was observed in the activity. XRD characterization of spent catalyst shows the re-oxidation of cobalt metal in single metal catalyst. Moreover, with addition of oxygen the increase in catalyst activity was obtained in terms of reactant conversion and hydrogen selectivity.

Catalytic calcium-looping reforming of biogas: A novel strategy to produce syngas with improved H2/CO molar ratios

Anaerobic digestion to acquire biogas is currently the most widely used approach to dispose of vast anthropogenic biowastes. However, effective strategies, except for power generation in the energy sector, to utilize the waste-derived biogas resource are lacking. Herein, we propose a new thermochemical biogas transformation process, catalytic calcium-looping reforming of biogas, to produce syngas with a controllable molar ratio of H2 to CO. In this process, the conventional CH4 dry reforming reaction is decoupled into the separate CH4 dissociation reaction to acquire H2 and reverse Boudouard reaction to acquire CO, respectively. Results showed that the proposed process was able to produce a H2-rich stream at a yield of 175.4mmolH2/gNi with a H2/CO molar ratio of 5.6 at 700 °C, followed by a high-purity CO stream at a yield of 155.4 mmolCO/gNi at 800 °C in one biogas reforming cycle. It is shown that the reaction between CO2 and the carbon species with a graphitic ordering is the rate-determining step of the proposed biogas reforming process. Despite the scope for improvement of process stability, the proposed catalytic calcium-looping reforming of biogas has been experimentally demonstrated to be a promising strategy to inherently control the molar ratio of H2 to CO during syngas production.

Synergistic effects of plasma Z-scheme photocatalysis process for biogas conversion

Biogas can be an energy carrier and on-site conversion of biogas into syngas provides an alternative to reduce its utilization cost and to increase its energy density since CO2 can be converted into combustible contents. In this study, perovskite-type photocatalyst LaFeO3 (LFO) and Ag-LaFeO3/TiO2 (ALFTO) are prepared and combined with a spark discharge reactor to conduct biogas reforming. Next, to reduce the influence of H2S on reforming system, another photocatalyst BaTa0.7Nb0.3O3 (BTaNO) is added to form plasma Z-scheme photocatalysis system. Results indicate that packing ALFTO enhances syngas generation rate to 20.2 mol/kW h but the existence of H2S leads to deactivation of photocatalyst and restriction on discharge. Further introduction of BTaNO increases the stable discharge time of the reactor. Photocatalyst characterizations further indicate that there are interactions between plasma and photocatalyst to induce synergistic effects and Z-scheme photocatalysis is beneficial to alleviate the impact of H2S on biogas reforming.

Production routes of advanced renewable C1 to C4 alcohols as biofuel components – a review

AbstractIn 2018, the EU's revised Renewable Energy Directive came into force, increasing renewable energy targets for all energy sectors while limiting the use of first‐generation biomass as feedstock. Fuel components like methanol, ethanol, propanols, and butanols represent promising candidates to enable the targets for transportation to be achieved because they can be used with existing infrastructure and can be further processed to give additives and substitutes. A wide variety of feedstocks and processes are available for this purpose. In this review, the thermocatalytic and biological synthesis routes for C1–C4 alcohol fuels are summarized to illustrate the many alternatives. They include biomass and waste gasification and carbon capture and utilization to obtain syngas for catalytic conversion, fermentation of sugars from lignocellulosic feedstock, and novel, less developed pathways like syngas fermentation, glycerol conversion, and biogas reforming. The current state of technology is presented by discussing the advantages and technical hurdles, and by introducing recent scaled‐up approaches. This demonstrates the need for further research and development. The assessment of techno‐economic analyses in the literature illustrates the dominant factors affecting production costs and reveals the broad range of feasibility of the various production routes. The review shows that the routes most similar to conventional, well‐established syntheses bear the highest potential to be implemented in the short and medium term. The availability of cheap and abundant feedstock also plays a crucial role. Methanol synthesis from biomass gasification and ethanol, and acetone‐butanol‐ethanol fermentation from lignocellulosic biomass, are therefore considered to be very promising. © 2020 The Authors. Biofuels, Bioproducts and Biorefining published by Society of Industrial Chemistry and John Wiley & Sons Ltd.

Hydrogen and/or syngas production through combined dry and steam reforming of biogas in a membrane reactor: A thermodynamic study

The possibility of valorizing biogas by producing pure H2 and/or syngas while minimizing the net CO2 emissions was analyzed, combining both dry and steam reforming of biogas. For this purpose, a multifunctional membrane reactor (MR) with a hydrogen permselective membrane was used. The MR, which allows obtaining ultra-pure hydrogen in the permeate side, is compared with a conventional reactor (CR). All analyses were performed from thermodynamic equilibrium calculations based on the Gibbs free energy minimization method. The temperature was varied up to 800 °C and 550 °C for the CR and the MR, respectively. The influence of water addition in the feed on the productivity of hydrogen and CO2 reduction was assessed as well. Results showed that the CR is more suitable to obtain syngas with high purity (only CO and H2) because it allows operating at very high temperatures. The syngas H2/CO ratio can be adjusted for further applications depending on the co-fed amount of water. However, in the permeate side of the MR high-purity hydrogen with a productivity of 73 mol per 100 mol of biogas fed can be obtained. This productivity is equivalent to an H2 production of 131 kg/h, assuming the biogas generation capacity of an existing landfill plant; still, by CO2 recycling, net CO2 emission can be reduced up to 50%.

Study of CO2 and H2O adsorption competition in the combined dry / steam reforming of biogas

The combined dry-steam reforming (CDSR) of a model biogas (66 % CH4 + 34 % CO2) has been investigated under various feed compositions and reaction temperature conditions over a Ni-Rh/MgAl2O4 catalyst, with the objective to convert the excess of methane (compared to CO2) by steam reforming (SR). Methane, however, appeared to react preferentially with H2O rather than with CO2, leading to an inhibition of the dry reforming (DR) reaction in the presence of steam. CO2 and H2O adsorption and co-adsorption studies revealed that H2O was always adsorbed in much higher amounts than CO2 on the catalyst surface. A Temkin adsorption model applied to temperature-programmed adsorption experiments (TPAE) showed that two different strongly adsorbed CO2 and H2O species were present on the catalyst surface at moderate temperature, but only one of each remained adsorbed at temperatures relevant to the reaction conditions (600−800 °C). H2O was also shown to displace CO2 from the catalyst surface, confirming that they compete, at least partially, for the same adsorption sites. At high temperature, the surface coverage by the most strongly adsorbed H2O species was predominant. These results should contribute to the development of efficient catalytic processes for biogas valorization to produce syngas and hydrogen from renewable sources.

Structural and catalytic properties of ceria layers doped with transition metals for SOFCs fueled by biogas

The aim of this paper was to investigate an influence of the nanocrystalline Ce0.8A0.2O2-δ (A = Mn, Fe, Co, Ni, Cu) materials on the direct internal reforming of biogas in SOFC. Structural analysis of fabricated compounds has been done. An in-situ analysis of a composition of outlet gases from operating SOFC was performed using FTIR spectroscopy with simultaneous electrical tests. It was found out, that type of dopant strongly affects biogas reforming process. The differences in absolute values of current density resulted mostly from a microstructure and probably phase composition of a deposited layers. Fuel cells with Ce0.8Co0.2O2-δ and Ce0.8Ni0.2O2-δ additional layers presented the highest drop of current density after switching from hydrogen to biogas, but simultaneously they were the most stable in time. Additional chemical analysis revealed that steam reforming and methane pyrolysis might be dominating reactions while working in biogas atmosphere.

Hydrogen-rich syngas production and carbon dioxide formation using aqueous urea solution in biogas steam reforming by thermodynamic analysis

Biogas is a renewable biofuel that contains a lot of CH4 and CO2. Biogas can be used to produce heat and electric power while reducing CH4, one of greenhouse gas emissions. As a result, it has been getting increasing academic attention. There are some application ways of biogas; biogas can produce hydrogen to feed a fuel cell by reforming process. Urea is also a hydrogen carrier and could produce hydrogen by steam reforming. This study then employes steam reforming of biogas and compares hydrogen-rich syngas production and carbon dioxide with various methane concentrations using steam and aqueous urea solution (AUS) by Thermodynamic analysis. The results show that the utilization of AUS as a replacement for steam enriches the production of H2 and CO and has a slight CO2 rise compared with pure biogas steam reforming at a temperature higher than 800 °C. However, CO2 formation is less than the initial CO2 in biogas. At the reaction temperature of 700 °C, carbon formation does not occur in the reforming process for steam/biogas ratios higher than 2. These conditions led to the highest H2, CO production, and reforming efficiency (about 125%). The results can be used as operation data for systems that combine biogas reforming and applied to solid oxide fuel cell (SOFC), which usually operates between 700 °C to 900 °C to generate electric power in the future.

Biogas dry reforming over Ni–Ce catalyst supported on nanofibered alumina

Four catalysts based on Ni and Ni–Ce supported on two γ-aluminas with different morphology (nanofibers and nanograins) have been prepared and studied in the dry reforming of simulated biogas. Catalysts were characterized by N2 physisorption, X-ray diffraction (XRD), temperature-programmed reduction (TPR), transmission electron microscopy (TEM), scanning electron microscopy (SEM), inductively coupled plasma with optical emission spectrometer (ICP-OES), chemisorption of H2 and elemental analysis (EA) to determine their most relevant physicochemical properties. Characterization results show that metallic Ni particles supported on nanofibered alumina (NFA) presents a higher dispersion and smaller size than that supported on the nanograiny alumina (NGA) probably due to the higher mesoporosity presented by the NFA support. On the other hand, the incorporation of Ce has a similar effect than the fibrous morphology, decreasing also the size of the Ni metallic particles and increasing their dispersion. In the dry reforming of synthetic biogas (CH4/CO2 = 1.5) the nanofibered alumina containing 5 wt% Ni and 1.5 wt% Ce (NiCe/NFA) showed the highest catalytic activity at 750 °C (98% CO2 conversion) and stability (7.7% nickel sinterization level and 2.9 wt% carbon deposition). The stability of this catalyst was also demonstrated at 750 °C during 55 h of reaction time with a loss of activity at the steady state under 2%. In addition, the catalyst was regenerated at 600 °C in oxygen flow, recovering completely its initial catalytic performance. The excellent catalytic behavior of NiCe/NFA material has been related to the fibrous morphology of the alumina support, which promotes a better dispersion of the supported Ni metal particles, decreasing their size and increasing the number of actives sites where dry reforming reaction can take place. In addition, the incorporation of Ce seems to have also an important role by increasing the Ni-support interactions, decreasing sinterization of the metallic Ni particles and coke deposition. The contribution of both effects (morphology and Ce), separately and in combination, have been proved to enhance significantly the catalytic activity and stability of the synthesized catalysts in the dry reforming of simulated biogas.