Ruthenium doped nickel-alumina-ceria catalyst in glycerol steam reforming

Demsash, Hundessa Dessalegn; Kondamudi, Kishore; Upadhyayula, Sreedevi; Mohan, Ratan

doi:10.1016/j.fuproc.2017.09.017

Cited by 56 publications

(20 citation statements)

References 22 publications

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“…Due to the high cost of noble metal catalysts, their use is limited, despite the fact that such systems usually show high catalytic activity and low carbon formation during steam reforming reactions. Most of the works reported in the literature for the GSR have focused on ruthenium [38][39][40][41][42][43], as Ru is the least expensive among all noble metals, and platinum [44][45][46][47][48][49][50][51], but one may also find a few works that have examined the performance of Rh [52][53][54][55], Ir [56] or Pd [57] catalysts. However, there are only a handful of works that perform a comparative assessment of the performance of different noble metal catalysts [58,59].…”

Section: Introductionmentioning

confidence: 99%

“…Moreover, due to its acid character, alumina also promotes dehydration, polymerization and isomerisation, which take place during the GSR. However, alumina also induces carbon deposition and sintering; the former is caused by the promotion of cracking reactions, while the latter can occur through the transition of Al 2 O 3 to a crystalline phase during high temperature reactions [30,31,39,60]. Thus, the acid character of Al 2 O 3 must be tuned in order to help promote the desired reactions, while at the same time avoid carbon deposition and sintering.…”

Section: Introductionmentioning

confidence: 99%

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The Effect of Noble Metal (M: Ir, Pt, Pd) on M/Ce2O3-γ-Al2O3 Catalysts for Hydrogen Production via the Steam Reforming of Glycerol

et al. 2020

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A promising route for the energetic valorisation of the main by-product of the biodiesel industry is the steam reforming of glycerol, as it can theoretically produce seven moles of H2 for every mole of C3H8O3. In the work presented herein, CeO2–Al2O3 was used as supporting material for Ir, Pd and Pt catalysts, which were prepared using the incipient wetness impregnation technique and characterized by employing N2 adsorption–desorption, X-Ray Diffraction (XRD), Temperature Programmed Reduction (TPR), Temperature Programmed Desorption (TPD), X-ray Photoelectron Spectroscopy (XPS) and Transmission Electron Microscopy (TEM). The catalytic experiments aimed at identifying the effect of temperature on the total conversion of glycerol, on the conversion of glycerol to gaseous products, the selectivity towards the gaseous products (H2, CO2, CO, CH4) and the determination of the H2/CO and CO/CO2 molar ratios. The main liquid effluents produced during the reaction were quantified. The results revealed that the Pt/CeAl catalyst was more selective towards H2, which can be related to its increased number of Brønsted acid sites, which improved the hydrogenolysis and dehydrogenation–dehydration of condensable intermediates. The time-on-stream experiments, undertaken at low Water Glycerol Feed Ratios (WGFR), showed gradual deactivation for all catalysts. This is likely due to the dehydration reaction, which leads to the formation of unsaturated hydrocarbon species and eventually to carbon deposition. The weak metal–support interaction shown for the Ir/CeAl catalyst also led to pronounced sintering of the metallic particles.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The Effect of Noble Metal (M: Ir, Pt, Pd) on M/Ce2O3-γ-Al2O3 Catalysts for Hydrogen Production via the Steam Reforming of Glycerol

et al. 2020

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“…Regarding the catalytic glycerol gasification approach there are many other studies. In such studies [6][7][8][9][10] the authors synthesized nickel-based catalysts in order to study glycerol steam reforming, with a special emphasis on the effect of temperature on the overall process, H 2 selectivity, and glycerol conversion yields. Yus et al [11] provided a different perspective to this field, since they used a two-zone fluidized bed reactor for the glycerol steam reforming, in order to prevent catalyst deactivation by coke.…”

Section: Introductionmentioning

confidence: 99%

Co-Gasification of Crude Glycerol/Animal Fat Mixtures

Almeida¹,

Pilão²,

Ribeiro³

et al. 2020

Energies

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The aim of this work was to assess the technical viability of glycerol/fat co-gasification. The gasification performance was studied in a downflow fixed bed reactor using activated alumina particles as bed material and steam as oxidizing agent. The effect of gasification temperature, from 800 to 950 °C was studied with a feed mixture with 10% (w/w) of animal fat. The influence of fat incorporation on the feedstock in the overall gasification process was also performed, using 3% (w/w) and 5% (w/w) of fat in feed mixtures. Samples of dry gas from the gasifier were collected and analyzed by gas chromatography in order to determine the CO, CO2, CH4, and H2 content. The best results were obtained using the highest tested temperature, 950 °C, and using 3% (w/w) of animal fat in the feed mixture. The overall results revealed that the co-gasification of glycerol/animal fat mixtures seems to be a feasible technical option.

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“…However, glycerol could also be used for the production of hydrogen, a fuel that is carbon-free and possesses the highest energy content compared to any known fuel [7,8]. Hydrogen can be produced from glycerol by catalytic reactions, such as, oxidative steam reforming (OSR) [9,10], auto-thermal reforming (ATR) [11,12], aqueous phase reforming (APR) [13,14], supercritical water (SCW) reforming [15,16] and steam reforming (GSR) [17,18]. GSR (Eq.…”

Section: Accepted Manuscript Introductionmentioning

confidence: 99%

The influence of SiO2 doping on the Ni/ZrO2 supported catalyst for hydrogen production through the glycerol steam reforming reaction

et al. 2019

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Highlights  SiO2 stabilizes monoclinic ZrO2, restricts sintering, strengthens Ni-support interaction  Ni/SiZr reveals increased H2 yield (close to thermodynamic) and CO2 selectivity  High H2/CO ratio and a negligible CO/CO2 can be achieved by the Ni/SiZr  At 750 o C acetone, acetaldehyde main products for Ni/Zr and allyl alcohol for Ni/SiZr  Ni/SiZr (half of carbon) more resistant to deactivation in comparison with the Ni/Zr

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Ruthenium doped nickel-alumina-ceria catalyst in glycerol steam reforming

Cited by 56 publications

References 22 publications

The Effect of Noble Metal (M: Ir, Pt, Pd) on M/Ce2O3-γ-Al2O3 Catalysts for Hydrogen Production via the Steam Reforming of Glycerol

The Effect of Noble Metal (M: Ir, Pt, Pd) on M/Ce2O3-γ-Al2O3 Catalysts for Hydrogen Production via the Steam Reforming of Glycerol

Co-Gasification of Crude Glycerol/Animal Fat Mixtures

The influence of SiO2 doping on the Ni/ZrO2 supported catalyst for hydrogen production through the glycerol steam reforming reaction

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