Study of the Suitability of a Pt-Based Catalyst for the Upgrading of a Biomass Gasification Syngas Stream via the WGS Reaction

Maroño, M.; Sanchez, J.; Ruiz, Esperanza; Cabanillas, A.

doi:10.1007/s10562-008-9644-9

Cited by 14 publications

(6 citation statements)

References 20 publications

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“…In addition, the improvement of hydrogen production was reported by adding Fe/CaO catalyst to a continuous-feed fluidized bed reactor [16]. Supported noble metal catalysts such as Rh, Ru and Pt have been reported to effectively increase syngas yield [18][19][20][21]. However, the high cost of these noble metals limits the wide applications of biomass gasification in industrial practice.…”

Section: Introductionmentioning

confidence: 99%

Characteristics and catalytic properties of Ni/CaAlO x catalyst for hydrogen-enriched syngas production from pyrolysis-steam reforming of biomass sawdust

Chen

Dong

et al. 2016

Applied Catalysis B: Environmental

137

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Abstract:The production of hydrogen-enriched syngas from the thermo-chemical conversion of biomass was studied using Ni/CaAlO x catalysts prepared by coprecipitation method. The effect of Ca addition with different molar ratios of Ca:Al (1:3, 1:2, 1:1, 2:1, 3:1) on the properties and catalytic behaviour in relation to syngas production and the coke formation on the surface of the catalysts were investigated.Catalysts were characterized by BET, XRD, TPR, SEM, and TEM. The SEM and TEM results showed that rod-shaped nano-particles were highly dispersed on the surface of the catalyst. The particle size of NiO was slightly affected with the increase of Ca content in the catalyst. It appeared that the selectivity of CO was increased and the selectivity of CO 2 was reduced with the increase of Ca addition to the catalyst. For example, CO 2 concentration was reduced from 20 to 12 Vol.%, when the molar ratio of Ca/Al was increased from 1:3 to 3:1 for the Ni/CaAlO x catalyst; it is suggested that the water gas shift reaction was inhibited and CO 2 reforming reactions were promoted in the presence of the catalyst with higher Ca content. The CO/H 2 molar ratio could be manipulated by changing the Ca content in the catalyst, while the H 2 concentration remained almost constant (around 45 Vol.%). Thus, using the Ni/CaAlO x catalyst developed in this work could provide a promising route to control the syngas composition, which is an important factor for syngas applications.

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Section: Introductionmentioning

confidence: 99%

Characteristics and catalytic properties of Ni/CaAlO x catalyst for hydrogen-enriched syngas production from pyrolysis-steam reforming of biomass sawdust

Chen

Dong

et al. 2016

Applied Catalysis B: Environmental

137

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“…There are a variety of potential catalysts including bulk CaO with the attempts of numerous modifications that have been studied for biomass gasification process [7][8][9][10][11]. CaO is one promising catalyst material due to its lower cost and abundance.…”

Section: Introductionmentioning

confidence: 99%

Hydrogen production from wood gasification promoted by waste eggshell catalyst

Taufiq‐Yap

Wong

Marliza

et al. 2013

Int. J. Energy Res.

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SUMMARYBio-hydrogen renowned as a future potential hydrogen source and studies were devoted in developing the efficient way to obtain the hydrogen. Biomass gasification of Azadirachta excelsa wood was carried out with addition of naturally derived CaO catalyst using temperature-programmed gasification (TPG) technique. The reaction (TPG) was performed at 50-1000 C in 5% O 2 /He with flow rate 10 ml/min, and the product gas evolution (H 2 , CH 4 , CO and CO 2 ) was detected by online mass spectrometer. The waste eggshell was chosen as a natural source of CaO, and the effect of catalyst loading was investigated in this study. All the fresh and used catalysts were characterized, and the physicochemical changes of the eggshell were observed through scanning electron microscopy, X-ray fluorescence and X-ray diffraction techniques. Hydrogen yield were increased along with the catalyst loading (20%, 40% and 60%) from 57 to 73%, respectively, compared to the reaction without catalyst. The additions of waste eggshell enhanced the catalytic activity and suppressed CO 2 production through CaO absorption property which induced the water gas shift reaction that promotes H 2 production at lower temperature.

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“…Traditionally, the WGS after a gasifier is carried out by a high-temperature (350 -400 °C), Fe-Cr-catalyst-based stage, followed by a low-temperature (220 -300 °C), Cu-Zn-catalyst-based shift with H2 being purified in a subsequent separation stage (Brunetti et al, 2012). However, the Fe-Cr-based catalysts pose potential environmental and safety issues due to the presence of Cr compounds, while the Cu-Zn-based catalysts tend to undergo sintering and are susceptible to poisoning (Maroño et al, 2008). The presence of H2 in syngas limits CO conversion thermodynamically (Eg.…”

Section: Syngas Upgradingmentioning

confidence: 99%

“…Chein et al (2014) showed that Pt/CeO2/Al2O3 catalysts exhibited good thermal stability in the temperature range of 750 -850 °C and bimetallic Pt-Ni/CeO2/Al2O3 catalysts led to higher CO conversion compared to monometallic catalysts (Pt/Al2O3 or Pt/CeO2/Al2O3). Maroño et al (2008) showed that the CO concentration at the reactor outlet was reduced to less than 3% using a Pt/CeO2/ZrO2 catalyst in the temperature range of 300 -400 °C, and CO conversion decreased as the space velocity increased or the H2O/CO ratio decreased.…”

Section: Syngas Upgradingmentioning

confidence: 99%

Towards practical application of gasification: a critical review from syngas and biochar perspectives

You

Tsang

et al. 2018

Critical Reviews in Environmental Science and Technology

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Syngas and biochar production are mainly influenced by temperature, feedstock properties, gasifying agent, pressure, and the mass ratio between gasifying agent and feedstock with temperature being the most significant factor. Increasing temperature generally promotes syngas production while suppressing biochar production. The selection of gasifiers (fixed bed, fluidized bed, and entrained flow) is highly dependent on scale requirement (e.g., volume of feedstock and energy demand), feedstock characteristics (e.g., moisture and ash content), and the quality of syngas and biochar. Updraft fixed bed gasifiers are suitable for the feedstocks with a moisture content up to 50 wt.%. High ash feedstocks such as Indian coal, dried sewage sludge, and municipal solid waste that are not suitable for fixed bed gasifiers, have been successfully gasified in bubbling fluidized bed reactors. Woody biomass is not suitable for entrained flow gasifiers unless specialized feeding methods are employed such as wood torrefaction and grinding followed by the existing feeding methods for pulverized coals, biomass-oil biochar slurry preparation followed by pumping, wood or torrefied wood slurry preparation followed by pumping, etc. Syngas and biochar can potentially be contaminated by NH3, H2S, and tar, which can be removed using catalysts (e.g., Ni-based), metal oxides-based sorbents, and thermal and catalytic cracking methods. Existing syngas and biochar upgrading methods suffered from various problems such as economic infeasibility, limited productivity, and fouling, and future syngas and biochar upgrading methods should be aimed to have the features of reliability, security, affordability, and sustainability, towards the practical, largescale production of syngas-and biochar-based products. One potential solution is to develop integrated systems by combining biochar upgrading and application with syngas upgrading, which warrants an integrated perspective based on both life cycle assessment and economic analysis.

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Study of the Suitability of a Pt-Based Catalyst for the Upgrading of a Biomass Gasification Syngas Stream via the WGS Reaction

Cited by 14 publications

References 20 publications

Characteristics and catalytic properties of Ni/CaAlO x catalyst for hydrogen-enriched syngas production from pyrolysis-steam reforming of biomass sawdust

Characteristics and catalytic properties of Ni/CaAlO x catalyst for hydrogen-enriched syngas production from pyrolysis-steam reforming of biomass sawdust

Hydrogen production from wood gasification promoted by waste eggshell catalyst

Towards practical application of gasification: a critical review from syngas and biochar perspectives

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