Hydrogen production from glycerol dry reforming over Ag-promoted Ni/Al2O3

Harun, N.; Abidin, Sumaiya Zainal; Osazuwa, Osarieme Uyi; Taufiq-Yap, Yun Hin; Azizan, Mohammad Tazli

doi:10.1016/j.ijhydene.2018.03.093

Cited by 50 publications

(26 citation statements)

References 40 publications

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“…decorated the surface of a Ni/SiO 2 catalyst with Ag, which promoted the dispersion of NiO and enhanced DRG activity. Similar promotional effects were observed on Ag‐doped 15 %Ni/Al 2 O 3 , which showed improved hydrogen yield and glycerol conversion of 26.29 % and 33.41 %, respectively, compared with 10.18 % and 13.07 % of the undoped 15 %Ni/Al 2 O 3 [81] …”

Section: Catalytic Systemssupporting

confidence: 71%

Synthesizing High‐Volume Chemicals from CO₂ without Direct H₂ Input

et al. 2020

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Decarbonizing the chemical industry will eventually entail using CO 2 as a feedstock for chemical synthesis. However, many chemical syntheses involve CO 2 reduction using inputs such as renewable hydrogen. In this review, chemical processes are discussed that use CO 2 as an oxidant for upgrading hydrocarbon feedstocks. The captured CO 2 is inherently reduced by the hydrocarbon co-reactants without consuming molecular hydrogen or renewable electricity. This CO 2 utilization approach can be potentially applied to synthesize eight emission-intensive molecules, including olefins and epoxides. Catalytic systems and reactor concepts are discussed that can overcome practical challenges, such as thermodynamic limitations, overoxidation, coking, and heat management. Under the best-case scenario, these hydrogen-free CO 2 reduction processes have a combined CO 2 abatement potential of approximately 1 gigatons per year and avoid the consumption of 1.24 PWh renewable electricity, based on current market demand and supply.

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Section: Catalytic Systemssupporting

confidence: 71%

Synthesizing High‐Volume Chemicals from CO₂ without Direct H₂ Input

et al. 2020

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“…In line with this, Eschemann et al [32] proved the efficiency of silver as a reduction promoter in Co/TiO 2 catalyst since Co-Ag bonds improve the reducibility of cobalt oxides [32,33]. Besides, Harun et al [34] achieved better Ni 0 dispersion over Al 2 O 3 surface when Ag was included in the catalyst formulation. Similarly, it was described that CeO 2 , presents a synergistic effect with cobalt oxides since more oxygen vacancies are formed leading to higher reducibility [35].…”

Section: Introductionmentioning

confidence: 84%

Hydrogen Production from Steam Reforming of Acetic Acid as a Model Compound of the Aqueous Fraction of Microalgae HTL Using Co-M/SBA-15 (M: Cu, Ag, Ce, Cr) Catalysts

et al. 2019

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Hydrogen production derived from thermochemical processing of biomass is becoming an interesting alternative to conventional routes using fossil fuels. In this sense, steam reforming of the aqueous fraction of microalgae hydrothermal liquefaction (HTL) is a promising option for renewable hydrogen production. Since the HTL aqueous fraction is a complex mixture, acetic acid has been chosen as model compound. This work studies the modification of Co/SBA-15 catalyst incorporating a second metal leading to Co-M/SBA-15 (M: Cu, Ag, Ce and Cr). All catalysts were characterized by N2 physisorption, ICP-AES, XRD, TEM, H2-TPR, H2-TPD and Raman spectroscopy. The characterization results evidenced that Cu and Ag incorporation decreased the cobalt oxides reduction temperatures, while Cr addition led to smaller Co0 crystallites better dispersed on the support. Catalytic tests done at 600 °C, showed that Co-Cr/SBA-15 sample gave hydrogen selectivity values above 70 mol % with a significant reduction in coke deposition.

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“…Moreover, compared with the non-promoted catalyst, the La promoted catalysts showed a better carbon resistance due to its redox property to remove carbon and less acidity of Ni catalyst decreased by La. The promoters Re and Ag were also incorporated to optimize the performance of Ni based catalysts [54,55]. Similar to La, Ag can also improve the dispersion of Ni metals.…”

Section: Dry Reforming Of Glycerolmentioning

confidence: 99%

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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Hydrogen production from glycerol dry reforming over Ag-promoted Ni/Al2O3

Cited by 50 publications

References 40 publications

Synthesizing High‐Volume Chemicals from CO₂ without Direct H₂ Input

Synthesizing High‐Volume Chemicals from CO₂ without Direct H₂ Input

Hydrogen Production from Steam Reforming of Acetic Acid as a Model Compound of the Aqueous Fraction of Microalgae HTL Using Co-M/SBA-15 (M: Cu, Ag, Ce, Cr) Catalysts

Dry Reforming of Ethanol and Glycerol: Mini-Review

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Hydrogen production from glycerol dry reforming over Ag-promoted Ni/Al2O3

Cited by 50 publications

References 40 publications

Synthesizing High‐Volume Chemicals from CO2 without Direct H2 Input

Synthesizing High‐Volume Chemicals from CO2 without Direct H2 Input

Hydrogen Production from Steam Reforming of Acetic Acid as a Model Compound of the Aqueous Fraction of Microalgae HTL Using Co-M/SBA-15 (M: Cu, Ag, Ce, Cr) Catalysts

Dry Reforming of Ethanol and Glycerol: Mini-Review

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Product

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Synthesizing High‐Volume Chemicals from CO₂ without Direct H₂ Input

Synthesizing High‐Volume Chemicals from CO₂ without Direct H₂ Input