Recent studies on aqueous-phase reforming: Catalysts, reactors, hybrid processes and techno-economic analysis

Joshi, Amol N.; Vaidya, Prakash D.

doi:10.1016/j.ijhydene.2023.06.314

International Journal of Hydrogen Energy

2024

DOI: 10.1016/j.ijhydene.2023.06.314

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Recent studies on aqueous-phase reforming: Catalysts, reactors, hybrid processes and techno-economic analysis

Amol N. Joshi,

Prakash D. Vaidya

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2024

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Cited by 8 publications

References 86 publications

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Advances in catalyst design and reaction strategies for carbon‐neutral conversion of bioglycerol to propylene, 1,2‐propanediol, and hydrogen

El Doukkali,

Dumeignil

2024

J Americ Oil Chem Soc

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The inevitable depletion of fossil resources and the resulting anthropogenic climate change require a shift towards renewable feedstocks and eco‐friendly technologies for greener energy, fuel, and chemicals production. This mini‐review highlights our relevant research contributions to advance the production of carbon‐neutral propylene, 1,2‐propanediol and biohydrogen through thermo‐chemical conversion of biomass‐derived glycerol, using various heterogeneous catalysts. These achievements, recently recognized by the “ACI/NBB Glycerine Innovation Award,” are organized into shared sections: (i) economic and environmental benefits of utilizing surplus bioglycerol, as feedstock, (ii) strategies to improve the properties of transition metals‐based catalysts (e.g., Pt, Pd, Ni, Cu or Mo supported on γ‐Al2O3 or SiO2) for glycerol conversion via: steam reforming, aqueous‐phase reforming, hydrogenolysis, and hydrodeoxygenation reactions, (iii) discussion on the catalytic roles of metallic, acidic and/or redox sites, and keys factors affecting catalyst stability and selectivity in these reactions operated under H2O‐rich conditions, and (iv) assessment of reaction configurations and operating conditions for improved glycerol conversion into the target product, H2 utilization efficiency and CO2 emissions. The insights aim to guide the continuous improvement of bioglycerol upgrading processes.

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Advances in catalyst design and reaction strategies for carbon‐neutral conversion of bioglycerol to propylene, 1,2‐propanediol, and hydrogen

El Doukkali,

Dumeignil

2024

J Americ Oil Chem Soc

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Advances in the Homogeneously Catalyzed Hydrogen Production from Biomass Derived Feedstocks: A Review

Fasolini,

Martelli,

Piazzi

et al. 2024

ChemCatChem

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Biomass‐derived feedstocks for hydrogen production are crucial as an alternative to fossil fuel especially in those areas where green electricity and clean water are scarce. In this framework the transformation of simple (formic acid, alcohols) and more complex (polyalcohols, sugars and cellulose) bio‐derivatives in pure hydrogen is recognized as a promising approach. Parallel to great effort in heterogeneous catalysis, milder molecular systems represent a more selective eye for alternative solutions and mechanistic insights. In the present review the introduction summarizes the challenges in the catalytic utilization of biomass‐derived feedstocks, followed by the advances in homogeneously catalyzed hydrogen production from different substrates which will cover formic acid, with oustanding efficiency with noble metals and promising results with earth abundant ones and alcohols and polyalcohols, with particular emphasis to the development of heterogenized systems, ligand assisted catalysts and bi‐catalytic synergistic solutions which allow to avoid base and to promote catalyst stability and recyclability. In the last part, description of hydrogen production from more complex substrates, such as sugars and cellulose, will show the role of molecular complexes in main and side reactions. Critical comments on the reported advances are provided along the whole discussion.

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Sustainable Hydrogen Production by Glycerol and Monosaccharides Catalytic Acceptorless Dehydrogenation (AD) in Homogeneous Phase

Kostera,

Gonsalvi

2024

ChemSusChem

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In the quest for sustainable hydrogen production, the use of biomass‐derived feedstock is gaining importance. Acceptorless Dehydrogenation (AD) in the presence of efficient and selective catalysts has been explored worldwide as a suitable method to produce hydrogen from hydrogen‐rich simple organic molecules. Among these, glycerol and sugars have the advantage of being cheap, abundant, and obtainable from fatty acid basic hydrolysis (biodiesel industry) and from biomass by biochemical and thermochemical processing, respectively. Although heterogeneous catalysts are more widely used for hydrogen production from biomass‐based feedstock, the harsh reaction conditions applied limit applicability due to deactivation of active sites due to coking of carbonaceous materials. Moreover, heterogeneous catalyst are more difficult to fine‐tune than homogeneous counterparts, and the latter also allow for high process selectivities under milder conditions. The present Concept article summarizes the main features of the most active homogeneous catalysts reported for glycerol and monosaccharides AD. In order to directly compare hydrogen production efficiencies, the choice of literature works was limited to reports where hydrogen was clearly quantified by yields and turnover numbers (TONs). The types of transition metals and ligands is discussed, together with a perspective view on future challenges of homogeneous AD reactions for practical applications.

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Recent studies on aqueous-phase reforming: Catalysts, reactors, hybrid processes and techno-economic analysis

Cited by 8 publications

References 86 publications

Advances in catalyst design and reaction strategies for carbon‐neutral conversion of bioglycerol to propylene, 1,2‐propanediol, and hydrogen

Advances in catalyst design and reaction strategies for carbon‐neutral conversion of bioglycerol to propylene, 1,2‐propanediol, and hydrogen

Advances in the Homogeneously Catalyzed Hydrogen Production from Biomass Derived Feedstocks: A Review

Sustainable Hydrogen Production by Glycerol and Monosaccharides Catalytic Acceptorless Dehydrogenation (AD) in Homogeneous Phase

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