Aqueous phase reforming of ethylene glycol over bimetallic platinum-cobalt on ceria–zirconia mixed oxide

Jeon, Soo; Park, Yong Mean; Saravanan, K.; Han, Gui Young; Kim, Byung-Woo; Lee, Jong-Bae; Bae, Jong Wook

doi:10.1016/j.ijhydene.2017.01.221

Cited by 31 publications

(10 citation statements)

References 45 publications

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“…This is generally attributed to the singular redox properties of ceria (i.e., high oxygen storage capacity and oxygen mobility) which promote preferentially the WGS versus the methanation reaction and, thus, enhancing the hydrogen production [11,12]. The CeO 2 –ZrO 2, CeO 2 –La 2 O 3 and CeO 2 –TiO 2 mixed oxides have also been successfully used as support of Pt or Ni for APR, achieving a higher hydrothermal stability compared to pure CeO 2 [13,14,15,16].…”

Section: Introductionmentioning

confidence: 99%

Catalytic Performance of Ni/CeO2/X-ZrO2 (X = Ca, Y) Catalysts in the Aqueous-Phase Reforming of Methanol

et al. 2019

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In this study, we reported on the effect of promoting Ni/ZrO2 catalysts with Ce, Ca (two different loadings), and Y for the aqueous-phase reforming (APR) of methanol. We mainly focused on the effect of the redox properties of ceria and the basicity provided by calcium or yttrium on the activity and selectivity of Ni in this reaction. A systematic characterization of the catalysts was performed using complementary methods such as XRD, XPS, TPR, CO2-TPD, H2 chemisorption, HAADF-STEM, and EDS-STEM. Our results reveal that the improvement in reducibility derived from the incorporation of Ce did not have a positive impact on catalytic behaviour thus contrasting with the results reported in the literature for other Ce-based catalytic compositions. On the contrary, the available Ni-metallic surface and the presence of weak basic sites derived from Ca incorporation seem to play a major role on the catalytic performance for APR of methanol. The best performance was found for a Ce-free catalyst with a molar Ca content of 4%.

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Section: Introductionmentioning

confidence: 99%

Catalytic Performance of Ni/CeO2/X-ZrO2 (X = Ca, Y) Catalysts in the Aqueous-Phase Reforming of Methanol

et al. 2019

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“…Nowadays, the latter is increasingly used because of its high solubility in water and because it allows the formation of small platinum nanoparticles on the support; furthermore, all ligands can be removed from it upon heating the Pt(NH 3 ) 4 (NO 3 ) 2 impregnated sample. Accordingly, Pt(NH 3 ) 4 (NO 3 ) 2 is the metal precursor used for synthesis of heterogeneous catalytic systems active in reforming n-hexane [ 53 ], ethylene glycol [ 54 ], methane [ 55 ], hydrodeoxygenation of 5-hydroxymethylfurfural [ 56 ], deoxygenation of fatty acids and their esters [ 49 ], reverse water gas shift reaction [ 57 ], Fischer-Tropsch synthesis [ 51 ], hydrogenolysis of glycerol [ 52 ], etc.…”

Section: Introductionmentioning

confidence: 99%

Study of PtOx/TiO2 Photocatalysts in the Photocatalytic Reforming of Glycerol: The Role of Co-Catalyst Formation

et al. 2018

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In this study, relationships between preparation conditions, structure, and activity of Pt-containing TiO2 photocatalysts in photoinduced reforming of glycerol for H2 production were explored. Commercial Aerolyst® TiO2 (P25) and homemade TiO2 prepared by precipitation-aging method were used as semiconductors. Pt co-catalysts were prepared by incipient wetness impregnation from aqueous solution of Pt(NH3)4(NO3)2 and activated by calcination, high temperature hydrogen, or nitrogen treatments. The chemico-physical and structural properties were evaluated by XRD, 1H MAS NMR, ESR, XPS, TG-MS and TEM. The highest H2 evolution rate was observed over P25 based samples and the H2 treatment resulted in more active samples than the other co-catalyst formation methods. In all calcined samples, reduction of Pt occurred during the photocatalytic reaction. Platinum was more easily reducible in all of the P25 supported samples compared to those obtained from the more water-retentive homemade TiO2. This result was related to the negative effect of the adsorbed water content of the homemade TiO2 on Pt reduction and on particle growth during co-catalyst formation.

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“…Apart from nickel [ 120 ], noble metal catalysts such as Rh [ 55 ], Ru [ 121 ], Pt [ 122 ], Pd [ 123 ] and Ir [ 124 ] have also been widely investigated. It was claimed that the Rh catalyst is among the most efficient catalysts for the reforming process as experimented by Cai et al [ 82 ].…”

Section: Catalyst Developmentmentioning

confidence: 99%

“…Apart from nickel [120], noble metal catalysts such as Rh [55], Ru [121], Pt [122], Pd [123] and Ir [124] have also been widely investigated. It was claimed that the Rh catalyst is…”

Section: Noble Metals and Other Catalystsmentioning

confidence: 99%

Catalytic reforming of oxygenated hydrocarbons for the hydrogen production: an outlook

Azizan

Aqsha

Ameen

et al. 2020

Biomass Conv. Bioref.

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The catalytic steam reforming of oxygenated hydrocarbons has been holding an interest in scientific societies for the past two decades. The hydrogen production from steam reforming of glycerol, ethanol and other oxygenates such as ethylene glycol and propylene glycol are more suitable choice not just because it can be produced from renewable sources, but it also helps to decrease the transportation fuel price and making it more competitive. In addition, hydrogen itself is a green fuel for the transportation sector. The studies on the production of hydrogen from various reforming technologies revealed a remarkable impact on the environmental and socio-economic issues. Researchers became more focused on glycerol steam reforming (GSR), ethanol steam reforming (ESR) and other oxygenates to investigate the catalyst suitability, their kinetics and challenges for the sustainability of the oil and gas production. In the present work, the authors critically addressed the challenges and strategies for hydrogen production via GSR, ESR and other oxygenates reforming process. This review covers extensively thermodynamic parametric analysis, catalysts developments, kinetics and advancement in the operational process for glycerol, ethanol and few other oxygenates. This detailed investigation only highlights the steam reforming process (SRP) of these oxygenates at the laboratory experimental stage. It was found that from this review, there are many technical issues, which lead to economic challenges. The issues are yet to be addressed and thus, these particular applications require faster accelerations at the pilot scale, taking into the consideration of the current pandemic and economic issues, for a safer and greener environment. Graphical abstract

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Aqueous phase reforming of ethylene glycol over bimetallic platinum-cobalt on ceria–zirconia mixed oxide

Cited by 31 publications

References 45 publications

Catalytic Performance of Ni/CeO2/X-ZrO2 (X = Ca, Y) Catalysts in the Aqueous-Phase Reforming of Methanol

Catalytic Performance of Ni/CeO2/X-ZrO2 (X = Ca, Y) Catalysts in the Aqueous-Phase Reforming of Methanol

Study of PtOx/TiO2 Photocatalysts in the Photocatalytic Reforming of Glycerol: The Role of Co-Catalyst Formation

Catalytic reforming of oxygenated hydrocarbons for the hydrogen production: an outlook

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