Toward hydrogen production from aqueous phase reforming of polyols on Pt/Al2O3 catalyst

Bindwal, Ankush B.; Vaidya, Prakash D.

doi:10.1016/j.ijhydene.2015.09.142

Cited by 22 publications

(16 citation statements)

References 45 publications

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“…There are a few useful works using acetic acid,,, butanol,, diols, and glucose ,. Acetic acid is a common constituent of many biomass‐derived aqueous streams such as the water‐soluble portion of bio‐oil.…”

Section: Catalytic Studiesmentioning

confidence: 99%

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Review of Hydrogen Production by Catalytic Aqueous‐Phase Reforming

Vaidya

López-Sánchez

2017

ChemistrySelect

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Catalytic aqueous‐phase reforming (APR) produces higher quality hydrogen (with less carbon monoxide) and carbon dioxide from weak solutions of bio‐carbohydrates in a single reactor at low temperatures. It provides a good opportunity for the effective valorisation of biomass‐derived products. It is advantageous than steam reforming because it saves energy by avoiding vaporization of the biofeed and lowers cost by precluding an extra water gas shift reactor. As evident from the numerous published works during the past decade, there is growing academic and industrial interest in the APR process. This review updates recent literature on APR of many biomass surrogates such as glycerol, ethylene glycol, sorbitol, ethanol and glucose. Most works focused on the development of efficient catalysts for selective hydrogen production and they were deliberated comprehensively. Key insights into improved catalysts and reaction conditions were highlighted. New inferences on the thermodynamic, kinetic and reactor engineering aspects of the APR process were analysed too. This thorough appraisal of the current literature, which is hitherto missing, will surely contribute to the development of the next generation of catalysts and reactors for commercial applications of the APR process.

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Section: Catalytic Studiesmentioning

confidence: 99%

“…Among the diols, the reactions with propanediol and butanediol were reported. Using Pt/Al 2 O 3 , Bindwal and Vaidya reported that higher TOF H 2 values for 1,2‐propanediol than 1,4‐butanediol. In another study, Kim et al .…”

Section: Catalytic Studiesmentioning

confidence: 99%

Review of Hydrogen Production by Catalytic Aqueous‐Phase Reforming

Vaidya

López-Sánchez

2017

ChemistrySelect

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“…225 °C, 30–50 bar) eliminating the generation of steam and generating additional hydrogen through the water gas shift reaction. A range of substrates starting from such alcohols as methanol, ethanol, propanol, and including diols and polyols have been studied. − The hydrogen yields from APRs of sugars are lower than for the corresponding more reduced compounds, such as sugar alcohols; therefore the latter are selected as the starting compounds. Typically, water solutions of polyols are utilized with the overall system pressure during APR being ca.…”

Section: Introductionmentioning

confidence: 99%

Kinetics, Modeling, and Process Design of Hydrogen Production by Aqueous Phase Reforming of Xylitol

Murzin

Garcia

Russo

et al. 2017

Ind. Eng. Chem. Res.

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The present study was focused on kinetic investigation of xylitol aqueous phase reforming with 2.5%Pt/C catalyst in a fixed bed reactor. For kinetic modeling, a complex reaction network was taken into account considering the formation of not only hydrogen and CO 2 but also a range of alkanes in various side reactions. Parameter investigation revealed an adequate description of the experimental data. The influence of mass transfer was elucidated by exploring the parameter space of diffusion and mass transfer coefficients as well as Peclet numbers. Aspen HYSYS software was used to design a hydrogen production plant with 500 kg/h capacity operating with xylitol as a feedstock. Heat consumption of the designed process can be fully covered by heat generated by combusting alkanes formed during APR reaction.

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“…APR of 1,2-PDO on Pt/Al 2 O 3 was previously described by Bindwal and Vaidya . Acetic and propionic acids, methanol, ethanol and propanal were found in small amounts as liquid-phase products at 5 and 10% level of conversion.…”

Section: Results and Discussionmentioning

confidence: 99%

“…APR of 1,2-PDO on Pt/Al 2 O 3 was previously described Bindwal and Vaidya. 32 Acetic and propionic acids, methanol, ethanol and propanal were found in small amounts as liquid-phase products at 5 and 10% level of conversion. It should be also mentioned that support acidity plays a crucial role in this process, thus a direct comparison of APR on acidic support with the experimental data generated in the current work may lead to different conclusions.…”

Section: ■ Computational Detailsmentioning

confidence: 99%

A Combined Theoretical and Experimental Approach for Platinum Catalyzed 1,2-Propanediol Aqueous Phase Reforming

et al. 2017

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Decomposition pathways of 1,2-propanediol (1,2-PDO) on platinum were investigated by means of experiments and quantum-mechanical calculations. Different reaction paths on a Pt(111) model surface were computationally screened. Gas and liquid phase products distribution for aqueous phase reforming of 1,2-PDO solutions was experimentally analyzed. A mechanistic approach was used to trace the preferred paths according to calculated activation barriers of the elementary steps; in this way, the presence or absence of some hypothesized intermediates in the experiments was computationally rationalized. Hydroxyacetone was demonstrated to be among the most favored decomposition products. The competition between C-H, O-H, and C-C bond cleavages was investigated, revealing that shortening of the carbon chain occurs most likely via decarbonylation steps. (Figure Presented)

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Toward hydrogen production from aqueous phase reforming of polyols on Pt/Al2O3 catalyst

Cited by 22 publications

References 45 publications

Review of Hydrogen Production by Catalytic Aqueous‐Phase Reforming

Review of Hydrogen Production by Catalytic Aqueous‐Phase Reforming

Kinetics, Modeling, and Process Design of Hydrogen Production by Aqueous Phase Reforming of Xylitol

A Combined Theoretical and Experimental Approach for Platinum Catalyzed 1,2-Propanediol Aqueous Phase Reforming

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