Correlation of Pt–Re surface properties with reaction pathways for the aqueous-phase reforming of glycerol

Zhang, Liang; Karim, Ayman M.; Engelhard, Mark H.; Wei, Zhehao; King, David L.; Wang, Yong

doi:10.1016/j.jcat.2011.11.015

Cited by 123 publications

(172 citation statements)

References 31 publications

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“…Re increases the acidity of Pt/C catalysts thus resulting in elevated formation of alkanes from glycerol as demonstrated by Zhang et al 43 Fig . 12 shows a clear correlation between the acidic properties of the Pt/C catalysts elucidated by NH 3 -TPD and catalytic performance in the APR of xylitol.…”

Section: Catalysis Science and Technology Papermentioning

confidence: 75%

“…12,32,38 Carbon supports for Pt catalysts in the APR process have recently attracted much scientific attention. Such carbon supports as Vulcan active carbon (Pt 12,32,38,39 and Pt-M, M = Re, Ru, Os, Fe, Cu, Sn, Ir 15 ), activated carbon (Pt, 23,40,41 Pt-Re 42,43 ), carbon fibers (Pt and Pt-Ru), 44 single-walled carbon nanotubes SWNTs (Pt and Pt-Co), [45][46][47][48] ordered mesoporous carbon CMK-3 (Pt, 49 Pt-Mn, 50 Pt-Re 51 ) have been successfully investigated in the APR of polyols. These supports possess high hydrothermal stability under APR conditions (compared to the most investigated catalysts Pt on γ-Al 2 O 3 , where the alumina support might slowly transform into boehmite during water exposure at elevated temperatures and pressures 35,52 ), large surface area and good activity and hydrogen selectivity via APR.…”

Section: Introductionmentioning

confidence: 99%

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Aqueous-phase reforming of xylitol over Pt/C and Pt/TiC-CDC catalysts: catalyst characterization and catalytic performance

Кирилин

Hasse

Tokarev

et al. 2014

Catal. Sci. Technol.

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aThe aqueous phase reforming (APR) of xylitol was studied over five Pt/C catalysts. The correlation between physico-chemical properties of the catalysts and catalytic performance was established. The Pt/C catalysts have different textural properties as well as different mean Pt cluster sizes and surface acidity. The average Pt cluster size was investigated by means of CO chemisorption as well as by TEM.The reaction was found to be structure sensitive and TOF linearly increases with increasing average Pt cluster size in the studied domain. The catalysts which possess higher surface acidity favoured higher rates of hydrocarbon production. On the contrary the Pt/C materials with lower acidities generated hydrogen with high selectivity and TOF.

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Section: Catalysis Science and Technology Papermentioning

confidence: 75%

Section: Introductionmentioning

confidence: 99%

Aqueous-phase reforming of xylitol over Pt/C and Pt/TiC-CDC catalysts: catalyst characterization and catalytic performance

Кирилин

Hasse

Tokarev

et al. 2014

Catal. Sci. Technol.

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“…As there is only 3 C-C bonds in one molecule, both glycerol and intermediate are easily reacted as small molecules, which produce a complex mixture. The complexity drives the analysis of reaction pathways difficult based on products [31]. Davda et al [6], Zhang et al [31] and Luo et al [56] considered that CH-OH groups were formed during the APR process as intermediate.…”

Section: Glycerolmentioning

confidence: 99%

“…If C-O bonds cleavage occurs on glycerol, hydroxyacetone and 3-hydroxypropanal will be formed, which will be further hydrogenated to propanol or propane. The intermediates undergo C-O bonds cleavages and produce propylene glycol, which transforms to ethane [31] [56] [57]. Wawrzetz et al [57] showed only 20% of hydrogen selectivity caused by the C-O bonds cleavage.…”

Section: Glycerolmentioning

confidence: 99%

Renewable Hydrogen Produced from Different Renewable Feedstock by Aqueous-Phase Reforming Process

Wei¹,

Lei²,

Liu³

et al. 2014

JSBS

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Aqueous phase reforming (APR) of biomass derived feedstock producing hydrogen was reviewed. The APR process was discussed based on different feedstock categories such as sugars, polyols and ethanol. The mechanism of APR was analyzed referring to different structures of feedstock. The reaction pathways of APR were investigated. The usage of catalysts should be judged by feedstock on the requirement including C-C bond cleavage, water-gas shift (WGS) reaction, and catalyst maintenance. The prospects were concluded based on the recent works from bimetallic catalysts and high efficient supports. Examples of significant challenges of reducing catalyst cost and increasing catalyst stability have been discussed. The modification and utilization of alkane selectivity of APR processes for liquid fuel production was also investigated.

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“…The mechanism of glycerol APR over Pt-based catalysts has been discussed (King et al, 2010;Wawrzetz et al, 2010;Zhang et al, 2012), and the possible reaction pathways are shown in Fig. 3.…”

Section: Aqueous-phase Reforming Of Glycerolmentioning

confidence: 99%

Progress in the aqueous-phase reforming of different biomass-derived alcohols for hydrogen production

Chen

et al. 2015

J. Zhejiang Univ. Sci. A

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Hydrogen as a clean, efficient, and sustainable energy has attracted considerable attention in recent years. Hydrogen production from aqueous-phase reforming (APR) of biomass-derived alcohols is preferable to other methods because of its wide renewable resource, mild reaction conditions, and low processing cost. In this paper, the progress in the APR process of different biomass-derived alcohols for H 2 production is reviewed, and the reaction mechanisms are briefly discussed for different catalysts. Pt-based catalysts exhibit high H 2 selectivity but low conversion of the alcohols. Ni-based catalysts exhibit high activity and conversion but low H 2 selectivity and yield.

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Correlation of Pt–Re surface properties with reaction pathways for the aqueous-phase reforming of glycerol

Cited by 123 publications

References 31 publications

Aqueous-phase reforming of xylitol over Pt/C and Pt/TiC-CDC catalysts: catalyst characterization and catalytic performance

Aqueous-phase reforming of xylitol over Pt/C and Pt/TiC-CDC catalysts: catalyst characterization and catalytic performance

Renewable Hydrogen Produced from Different Renewable Feedstock by Aqueous-Phase Reforming Process

Progress in the aqueous-phase reforming of different biomass-derived alcohols for hydrogen production

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