Bioglycerol-to-Propylene Routes: From Fundamental Catalysis to Process Design and Marketing

El Doukkali, Mohamed; Bahlouri, Meryem; Paul, Sébastien; Dumeignil, Franck

doi:10.1021/acscatal.3c01144

Cited by 5 publications

(2 citation statements)

References 172 publications

(984 reference statements)

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“…The designed photocatalysts were evaluated in glycerol hydrodeoxygenation (HDO) for C−OH activation and producing C 3 hydrocarbons and alcohols. The reaction conditions were kept the same, in water and without the addition of sacrificial agents or purging H 2 gas, which is common in glycerol HDO reactions [21] . The results are shown in Figure 5d.…”

Section: Resultsmentioning

confidence: 99%

Stacked Covalent Organic Ribbons Perpendicular to Graphene Oxide Sheets; a 1D‐p‐2D Design for Photocatalytic Tandem Reactions

Khazaee,

Ouyang,

Zhang

et al. 2024

Chemistry A European J

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Development of one dimensional covalent organic frameworks (1D‐COFs) with potential in light absorption and catalysis is still challenging, due to their rapid interpenetration to form 2D and 3D porous structures. Here we report a successful synthesis of imine‐linked 1D covalent organic ribbons (COR), using two simple linear building blocks 1,4‐Benzenediamine (Bda) and [2,2'‐Bipyridine]‐5,5'‐dicarbaldehyde (Bpy). The obtained 1D structure with nanorod morphology could keep its physicochemical characteristic properties when it is perpendicularitated on the surface of graphene oxide (GO) sheets (1D‐p‐2D structure). Due to an AB π‐π stacking and efficient charge transfer between perpendicular 1D COR and GO sheets, the obtained nanocomposite showed strong visible light absorbance (400‐700 nm) with coefficient of 4.400 M‐1cm‐1 and decreased recombination rate of photogenerated reactive species by 92%. The strategy of 1D‐p‐2D light driven system greatly enhanced the photocatalytic activity in practical applications such as both oxidation and hydrogenation tandem reactions to a rate constant of higher than 0.02 min‐1. This study presents the first case of 1D covalent organic polymers grown perpendicularly on a carbon‐based layer for boosting electron mobility through the junction between the two components.

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Section: Resultsmentioning

confidence: 99%

Stacked Covalent Organic Ribbons Perpendicular to Graphene Oxide Sheets; a 1D‐p‐2D Design for Photocatalytic Tandem Reactions

Khazaee,

Ouyang,

Zhang

et al. 2024

Chemistry A European J

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“…Biomass-derived molecules like bioethanol, bioglycerol, , or bio-oils may contribute to a transition to greener industries, helping in reducing the use of fossil resources and thus greenhouse gas emissions. The rapid development of fermentative processes from renewable feedstock is leading to a first-generation bioethanol (ET) excess (120 > Mt/year) .…”

Section: Introductionmentioning

confidence: 99%

Tuning the Acid Nature of the ZSM-5 Surface for Selective Production of Ethylene from Ethanol at Low Temperatures

Ouayloul,

Agirrezabal-Telleria,

Arias

et al. 2024

Energy Fuels

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Solid-acid ZSM-5 catalysts stand out as highly reactive for ethanol dehydration, but the selective production of ethylene at low temperatures, however, is still a challenge. Herein, two ZSM-5 zeolites with a distinct Si/Al ratio have been modified with Ce, La, or P species or treated with H 2 O or NH 3 to get a better understanding on the contribution of acid sites to the ethanol-to-ethylene catalysis. The doping of ZSM-5 affects both the number and strength of acid sites, of which the Ce content inversely increases the population of weak acid sites (WAS). Atomically dispersed oxygen vacancy-rich CeO x synergistically contribute to the dissociation of H 2 O during the synthesis of Alrich ZSM-5 to modify the local Al environment by forming new Al−OH bonds, acting as WAS. This significantly enhances the conversion of ethanol into intermediates and ultimately into ethylene (selectivity up to 92%). Further poisoning of strong acid sites (SAS) by in situ NH 3 -titration confirms that ethanol-to-ethylene catalysis at low temperatures occurs mostly over WAS, while the contribution of SAS is minor. The underpinning insights can serve as a basis for further developments in the combination of other multivalence species with ex situ water treatments or in situ cofeeding to design robust catalysts that are able to efficiently dehydrate bioethanol into ethylene at low temperatures.

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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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Bioglycerol-to-Propylene Routes: From Fundamental Catalysis to Process Design and Marketing

Cited by 5 publications

References 172 publications

Stacked Covalent Organic Ribbons Perpendicular to Graphene Oxide Sheets; a 1D‐p‐2D Design for Photocatalytic Tandem Reactions

Stacked Covalent Organic Ribbons Perpendicular to Graphene Oxide Sheets; a 1D‐p‐2D Design for Photocatalytic Tandem Reactions

Tuning the Acid Nature of the ZSM-5 Surface for Selective Production of Ethylene from Ethanol at Low Temperatures

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

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