Oxidative-reforming of model biogas over NiO/Al2O3 catalysts: The influence of the variation of support synthesis conditions

Asencios, Yvan J.O.; Elias, Kariny Ferreira Monteiro; Assaf, Elisabete Moreira

doi:10.1016/j.apsusc.2014.08.058

Cited by 23 publications

(8 citation statements)

References 36 publications

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“…Hydrogen, when produced from renewable biomass sources, has been regarded as an ideal energy carrier for the sustainable energy development [1][2][3][4][5][6][7][8]. Among the various biomass-derived feedstocks, bio-ethanol is considered as one of the most promising alternatives because of its relatively high hydrogen content, availability and non-toxicity [9,10].…”

Section: Introductionmentioning

confidence: 99%

Hydrogen production from ethanol over Ir/CeO2 catalyst: Effect of the calcination temperature

Zou

Zhang

et al. 2015

Fuel

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Section: Introductionmentioning

confidence: 99%

Hydrogen production from ethanol over Ir/CeO2 catalyst: Effect of the calcination temperature

Zou

Zhang

et al. 2015

Fuel

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“…However, searching through the available literature it becomes clear that alumina has been the most widely used catalyst support in the DRM due to its high specific area (which improves metal dispersion) and its mechanical and chemical resistance under reaction conditions. The drawback of using alumina is that it also induces the deposition of carbon [41,42].…”

Section: Introductionmentioning

confidence: 99%

Investigating the correlation between deactivation and the carbon deposited on the surface of Ni/Al2O3 and Ni/La2O3-Al2O3 catalysts during the biogas reforming reaction

Charisiou

Tzounis

Sebastián

et al. 2019

Applied Surface Science

151

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catalysts were investigated for the biogas reforming reaction using CH 4 /CO 2 mixtures with minimal dilution. Stability tests at various reaction temperatures were conducted and TGA/DTG, Raman, STEM-HAADF, HR-TEM, XPS techniques were used to characterize the spent samples. Graphitized carbon allotrope structures, carbon nanotubes (CNTs) and amorphous carbon were formed on all samples. Metallic Ni 0 was recorded for all (XPS), whereas a strong peak corresponding to Ni 2 O 3 /NiAl 2 O 4 , was observed for the Ni/Al sample (650-750°C). Stability tests confirm that the Ni/LaAl catalyst deactivates at a more gradual rate and is more active and selective in comparison to the Ni/Al for all temperatures. The Ni/LaAl exhibits good durability in terms of conversion and selectivity, whereas the Ni/Al gradually loses its activity in CH 4 and CO 2 conversion, with a concomitant decrease of the H 2 and CO yield. It can be concluded that doping Al 2 O 3 with La 2 O 3 stabilizes the catalyst by (a) maintaining the Ni 0 phase during the reaction, due to higher dispersion and stronger active phase-support interactions, (b) leading to a less graphitic and more defective type of deposited carbon and (c) facilitating the deposited carbon gasification due to the enhanced CO 2 adsorption on its increased surface basic sites.

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“…Other attempts have been focused on investigating the effects of O2 addition (ODRB) to improve the performance of the process by carbon removal by oxidation with O2. Some interesting investigations are reported [116]. But the addition of O2 was too small to affect the overall energy balance of the process.…”

Section: Discussionmentioning

confidence: 99%

Hydrogen production from reforming of biogas: Review of technological advances and an Indian perspective

Nahar¹,

Mote

Dupont

2017

Renewable and Sustainable Energy Reviews

115

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Oxidative-reforming of model biogas over NiO/Al2O3 catalysts: The influence of the variation of support synthesis conditions

Cited by 23 publications

References 36 publications

Hydrogen production from ethanol over Ir/CeO2 catalyst: Effect of the calcination temperature

Hydrogen production from ethanol over Ir/CeO2 catalyst: Effect of the calcination temperature

Investigating the correlation between deactivation and the carbon deposited on the surface of Ni/Al2O3 and Ni/La2O3-Al2O3 catalysts during the biogas reforming reaction

Hydrogen production from reforming of biogas: Review of technological advances and an Indian perspective

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