Catalytic performance of La-Ni/Al2O3 catalyst for CO2 reforming of ethanol

Bahari, Mahadi B.; Phuc, Nguyen Huu Huy; Alenazey, Feraih; Vu, Khanh B.; Ainirazali, Nurul; Vo, Dai‐Viet N.

doi:10.1016/j.cattod.2017.02.019

Cited by 57 publications

(33 citation statements)

References 41 publications

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“…A number of processes, such as pyrolysis and gasification with and without catalysts, have been developed to utilize bio-ethanol and glycerol [6][7][8][9]. To effectively close the carbon cycle, dry reforming of bio-ethanol and glycerol to produce syngas or H 2 , which can be used directly or converted into high value chemical compounds were proposed [10][11][12][13]. Dry reforming normally occurs at relatively high temperatures (900-1200 K) in the existence of CO 2 .…”

Section: Lignocellulosic Biomass Pretreatmentmentioning

confidence: 99%

“…To optimize the performance of Ni based catalysts, promoters such as La and Ce were also incorporated [11,19,29]. The advanced redox properties of Ce resulted in great benefits for a Ce-Ni/Al 2 O 3 tested in the dry reforming of ethanol.…”

Section: Dry Reforming Of Ethanolmentioning

confidence: 99%

“…a b Similarly, La has also been incorporated into Ni/Al2O3 [11,20]. La can enhance the dispersion of nickel particle and hinder the agglomeration of active phases.…”

Section: Dry Reforming Of Ethanolmentioning

confidence: 99%

“…H2-TPR (a) Al2O3, (b) 10%Ni/Al2O3 and (c) 3%La-10%Ni/Al2O3 catalysts, reproduced with permission from[11].…”

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confidence: 99%

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Dry Reforming of Ethanol and Glycerol: Mini-Review

Odriozola

Reina

2019

Catalysts

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Dry reforming of ethanol and glycerol using CO2 are promising technologies for H2 production while mitigating CO2 emission. Current studies mainly focused on steam reforming technology, while dry reforming has been typically less studied. Nevertheless, the urgent problem of CO2 emissions directly linked to global warming has sparked a renewed interest on the catalysis community to pursue dry reforming routes. Indeed, dry reforming represents a straightforward route to utilize CO2 while producing added value products such as syngas or hydrogen. In the absence of catalysts, the direct decomposition for H2 production is less efficient. In this mini-review, ethanol and glycerol dry reforming processes have been discussed including their mechanistic aspects and strategies for catalysts successful design. The effect of support and promoters is addressed for better elucidating the catalytic mechanism of dry reforming of ethanol and glycerol. Activity and stability of state-of-the-art catalysts are comprehensively discussed in this review along with challenges and future opportunities to further develop the dry reforming routes as viable CO2 utilization alternatives.

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Section: Lignocellulosic Biomass Pretreatmentmentioning

confidence: 99%

Section: Dry Reforming Of Ethanolmentioning

confidence: 99%

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Dry Reforming of Ethanol and Glycerol: Mini-Review

Odriozola

Reina

2019

Catalysts

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“…However, limited studies regarding the promotional effect on cobalt‐based catalysts in EDR are reported in current literature. In the recent study of EDR over La‐promoted Ni/Al 2 O 3 , Bahari et al found that both C 2 H 5 OH and CO 2 conversions increased substantially with La addition whereas coke formation was reduced. Even though La‐promoter improved catalytic activity and coke resistance, there are no previous studies about the effect of this promoter on Co catalyst for EDR.…”

Section: Introductionmentioning

confidence: 97%

Stability evaluation of ethanol dry reforming on Lanthania‐doped cobalt‐based catalysts for hydrogen‐rich syngas generation

et al. 2018

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Summary Catalytic stability with time‐on‐stream is an important aspect in ethanol dry reforming (EDR) since catalysts could encounter undesirable deterioration arising from deposited carbon. This work examined the promotional effect of La on 10%Co/Al2O3 in terms of activity, stability, and characteristics. Catalysts were characterized by X‐ray diffraction (XRD), transmission electron microscopy (TEM), scanning electron microscopy (SEM), Raman, and X‐ray photoelectron spectroscopy (XPS) measurements whilst catalytic EDR performance of La‐promoted and unpromoted 10%Co/Al2O3 prepared via wet impregnation technique was investigated at 973 K for 72 h using a stoichiometric feed ratio (C2H5OH/CO2 = 1/1). La promoter substantially enhanced both metal dispersion and metal surface area from 0.11% to 0.64% and 0.08 to 0.43 m2 g−1, respectively. Ethanol and CO2 conversions appeared to be stable within 50 to 72 h after experiencing an initial activity drop. The conversion of C2H5OH and CO2 for La‐promoted catalyst was about 1.65 and 1.34 times greater than unpromoted counterpart in this order. The carbonaceous deposition was considerably decreased from 55.6% to 36.8% with La promotion due to La2O2CO3 intermediate formation. Additionally, 3%La‐10%Co/Al2O3 possessed greater oxygen vacancies acting as active sites for CO2 adsorption and hence increasing carbon gasification. Even though graphitic and filamentous carbons were formed on used catalyst surface, La‐addition diminished graphite formation and increased the reactiveness of amorphous carbon.

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Ethylene Glycol Dry Reforming over La‐Co/Al₂O₃: Optimization and Regeneration Studies

Rajendran,

Abdulkadir,

Jun

et al. 2023

Chem Eng & Technol

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Abstract3%La‐10%Co/Al2O3 catalyst was synthesized and catalytically optimized by using response surface methodology (RSM) for ethylene glycol dry reforming (EGDR). 3%La‐10%Co/Al2O3 showed excellent EGDR, whereby optimum performance (EG conversion of 80.43 %, CO2 conversion of 42.51 %, H2 yield of 76.41 %, and CO yield of 71.77 %) was attained under moderate reaction conditions (998 K, CO2 partial pressure of 15 kPa, and EG partial pressure of 23 kPa). The RSM model was statistically significant, and validation experiments showed a negligible discrepancy between the experimental and predicted values, demonstrating the validity and dependability of the model. The stability and regeneration studies evidenced the feasibility and catalytic stability of 3%La‐10%Co/Al2O3.

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Catalytic performance of La-Ni/Al2O3 catalyst for CO2 reforming of ethanol

Cited by 57 publications

References 41 publications

Dry Reforming of Ethanol and Glycerol: Mini-Review

Dry Reforming of Ethanol and Glycerol: Mini-Review

Stability evaluation of ethanol dry reforming on Lanthania‐doped cobalt‐based catalysts for hydrogen‐rich syngas generation

Ethylene Glycol Dry Reforming over La‐Co/Al₂O₃: Optimization and Regeneration Studies

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Catalytic performance of La-Ni/Al2O3 catalyst for CO2 reforming of ethanol

Cited by 57 publications

References 41 publications

Dry Reforming of Ethanol and Glycerol: Mini-Review

Dry Reforming of Ethanol and Glycerol: Mini-Review

Stability evaluation of ethanol dry reforming on Lanthania‐doped cobalt‐based catalysts for hydrogen‐rich syngas generation

Ethylene Glycol Dry Reforming over La‐Co/Al2O3: Optimization and Regeneration Studies

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Ethylene Glycol Dry Reforming over La‐Co/Al₂O₃: Optimization and Regeneration Studies