Reproducible performance of a Ni/La2O3–αAl2O3 catalyst in ethanol steam reforming under reaction–regeneration cycles

Montero, Carolina; Remiro, Aingeru; Arandia, Aitor; Benito, Pedro L.; Bilbao, Javier; Gayubo, Ana G.

doi:10.1016/j.fuproc.2016.07.002

Cited by 38 publications

(27 citation statements)

References 37 publications

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“…In Table 4, the Ni x Mg y O-Ce catalyst is also compared with many other nickel-based catalysts from recent literatures. [49][50][51][52][53][54] It is noteworthy that the Ni/Y 2 O 3 catalyst was the only catalyst, which showed higher hydrogen yield at 5.25 mol/mol ethanol , while its space velocity was only onetwentieth of what was applied to Ni x Mg y O-Ce in this study.…”

Section: Durability Testmentioning

confidence: 70%

“…The Ni x Mg y O‐Ce catalyst showed a high efficiency in hydrogen production with a yield of 4.82 mol/mol ethanol , which was achieved in extremely high GHSV (200 000 h −1 ) applied in this study. In Table , the Ni x Mg y O‐Ce catalyst is also compared with many other nickel‐based catalysts from recent literatures . It is noteworthy that the Ni/Y 2 O 3 catalyst was the only catalyst, which showed higher hydrogen yield at 5.25 mol/mol ethanol , while its space velocity was only one‐twentieth of what was applied to Ni x Mg y O‐Ce in this study.…”

Section: Resultsmentioning

confidence: 87%

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Highly efficient steam reforming of ethanol (SRE) over CeO _x grown on the nano Ni _x Mg _y O matrix: H ₂ production under a high GHSV condition

et al. 2019

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Summary Steam reforming of ethanol (SRE) over non‐noble metal catalysts is normally conducted at high temperature (>600°C) to thermodynamically favour the catalytic process and carbon deposition mitigation. However, high temperature inhibits water‐gas shift reaction (WGSR) and therefore restrains the yield of H2 and leads to the formation of an excessive amount of CO. The modification of non‐noble metal catalyst to enhance WGSR is an attractive alternative. In this study, CeOx was firstly loaded onto a nano‐scaled NixMgyO matrix and subsequently used as the catalyst for hydrogen production via SRE. Morphology of the catalyst materials was characterized by using a series of technologies, while H2‐temperature programmed reduction (H2‐TPR), CO‐temperature programmed deposition (CO‐TPD), and X‐ray photoelectron spectroscopy (XPS), were employed to study the surface nickel, ceria clusters, and their interactions. The catalytic activity and durability of the catalyst were studied in the temperature region of 500°C to 800°C. The CeOx‐coated nano NixMgyO matrix exhibited an outstanding hydrogen yield of 4.82 mol/molethanol under a high gas hourly space velocity (GHSV) of 200 000 hour−1. It is found that the unique Ni0‐CeOx structure facilitates the adsorption of CO on the surface and therefore promotes the effective hydrogen production via WGSR. Moreover, this modified NixMgyO matrix was found to be a more robust and anticoking nanocatalyst because of reversible switch between Ce4+ and Ce3+.

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Section: Durability Testmentioning

confidence: 70%

Section: Resultsmentioning

confidence: 87%

Highly efficient steam reforming of ethanol (SRE) over CeO _x grown on the nano Ni _x Mg _y O matrix: H ₂ production under a high GHSV condition

et al. 2019

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“…Combustion is the most commonly used method for the regeneration of steam reforming catalysts, due to its simple operation and high efficiency [123][124][125][126][127][128][129][130]. Wu and Liu [123] studied Ni/MgO-Al 2 O 3 catalyst regeneration via combustion and reported that the combustion method completely eliminated the coke on the catalyst surface and that the performance of the regenerated catalyst was close to that of the fresh catalyst.…”

Section: Catalyst Regenerationmentioning

confidence: 99%

Hydrogen Production from Catalytic Steam Reforming of Bio‐Oils: A Critical Review

Zhao

Situmorang

et al. 2020

Chem Eng & Technol

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In the future, hydrogen will be an important energy carrier and industrial raw material. Catalytic steam reforming of bio‐oils is a promising and economically viable technology for hydrogen production. However, during the reforming process, the catalysts are rapidly deactivated due to coke formation and sintering. Thus, maintaining the activity and stability of catalysts is the key issue in this process. Optimized operation conditions could extend the catalyst lifetime by affecting the coke morphology or promoting coke gasification. This article summarizes the recent developments in the field of catalytic steam reforming of bio‐oils, focusing on the operation conditions, the properties of the catalysts, and the effects of the catalyst supports. The expected insights into the catalytic steam reforming of bio‐oils will provide further guidance for hydrogen production from bio‐oils.

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“…A wide range of fuels and raw chemicals conventionally produced from petroleum can be obtained from these raw materials. Bio‐ethanol is well‐known for its potential as an alternative fuel, and also noteworthy is the technological development of bio‐ethanol conversion into hydrocarbons, chemical platforms, and H 2 (via steam reforming) . However, bio‐ethanol valorization is limited by the availability of fermentable biomass, given that sugars production from lignocellulosic biomass (which would not interfere with the human and animal feed chain) is still under development …”

Section: Introductionmentioning

confidence: 99%

Recent research progress on bio‐oil conversion into bio‐fuels and raw chemicals: a review

Valle

Remiro

García-Gómez

et al. 2018

J of Chemical Tech & Biotech

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143

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Recent advances in lignocellulosic biomass valorization for producing fuels and commodities (olefins and BTX aromatics) are gathered in this paper, with a focus on the conversion of bio-oil (produced by fast pyrolysis of biomass). The main valorization routes are: (i) conditioning of bio-oil (by esterification, aldol condensation, ketonization, in situ cracking, and mild hydrodeoxygenation) for its use as a fuel or stable raw material for further catalytic processing; (ii) production of fuels by deep hydrodeoxygenation; (iii) ex situ catalytic cracking (in line) of the volatiles produced in biomass pyrolysis, aimed at the selective production of olefins and aromatics; (iv) cracking of raw bio-oil in units designed with specific objectives concerning selectivity; and (v) processing in fluidized bed catalytic cracking (FCC) units. This review deals with the technological evolution of these routes, in terms of catalysts, reaction conditions, reactors, and product yields. A study has been carried out on the current state-of-knowledge of the technological capacity, advantages and disadvantages of the different routes, as well as on the prospects for the implementation of each route within the scope of the Sustainable Refinery. /jctb 2 -C 4 olefins 147 a % Relative area: Percentage of total peak area detected by GC/MS semi-quantitative analysis.

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Reproducible performance of a Ni/La2O3–αAl2O3 catalyst in ethanol steam reforming under reaction–regeneration cycles

Cited by 38 publications

References 37 publications

Highly efficient steam reforming of ethanol (SRE) over CeO _x grown on the nano Ni _x Mg _y O matrix: H ₂ production under a high GHSV condition

Highly efficient steam reforming of ethanol (SRE) over CeO _x grown on the nano Ni _x Mg _y O matrix: H ₂ production under a high GHSV condition

Hydrogen Production from Catalytic Steam Reforming of Bio‐Oils: A Critical Review

Recent research progress on bio‐oil conversion into bio‐fuels and raw chemicals: a review

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Reproducible performance of a Ni/La2O3–αAl2O3 catalyst in ethanol steam reforming under reaction–regeneration cycles

Cited by 38 publications

References 37 publications

Highly efficient steam reforming of ethanol (SRE) over CeO x grown on the nano Ni x Mg y O matrix: H 2 production under a high GHSV condition

Highly efficient steam reforming of ethanol (SRE) over CeO x grown on the nano Ni x Mg y O matrix: H 2 production under a high GHSV condition

Hydrogen Production from Catalytic Steam Reforming of Bio‐Oils: A Critical Review

Recent research progress on bio‐oil conversion into bio‐fuels and raw chemicals: a review

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Product

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Highly efficient steam reforming of ethanol (SRE) over CeO _x grown on the nano Ni _x Mg _y O matrix: H ₂ production under a high GHSV condition

Highly efficient steam reforming of ethanol (SRE) over CeO _x grown on the nano Ni _x Mg _y O matrix: H ₂ production under a high GHSV condition