Themed collection International Symposium on Green Chemistry 2022

39 items
Open Access Tutorial Review

Physico-chemical challenges on the self-assembly of natural and bio-based ingredients on hair surfaces: towards sustainable haircare formulations

Polymers and surfactants are used in many technological and industrial applications such as the manufacture of functional materials and coatings, personal care and pharmaceutical products, food science, paints or tertiary oil recover.

Graphical abstract: Physico-chemical challenges on the self-assembly of natural and bio-based ingredients on hair surfaces: towards sustainable haircare formulations
From the themed collection: 2023 Green Chemistry Reviews
Critical Review

Basic comprehension and recent trends in photoelectrocatalytic systems

This review reports the state-of-the-art photoelectrocatalytic setups, materials, the current applicational state, and the main bottlenecks.

Graphical abstract: Basic comprehension and recent trends in photoelectrocatalytic systems
From the themed collection: 2024 Green Chemistry Reviews
Communication

Decarboxylative arylation with diaryliodonium(III) salts: alternative approach for catalyst-free difluoroenolate coupling to aryldifluoromethyl ketones

α-Aryl-α,α-difluoroketones were synthesized via decarboxylative arylation using diaryliodonium salts under catalyst-free conditions without organometallic intermediates. The products can be transformed into various difluorinated functional groups.

Graphical abstract: Decarboxylative arylation with diaryliodonium(iii) salts: alternative approach for catalyst-free difluoroenolate coupling to aryldifluoromethyl ketones
Open Access Communication

Supercritical carbon dioxide as reaction medium for selective hydrogenation of fluorinated arenes

The selective hydrogenation of fluorinated arenes with polar functionalities to valuable fluorinated cyclohexanes is achieved using supercritical CO2 as solvent in combination with Rh NPs immobilized on molecularly modified silica as catalysts.

Graphical abstract: Supercritical carbon dioxide as reaction medium for selective hydrogenation of fluorinated arenes
Open Access Communication

Sustainability and efficiency assessment of vanillin allylation: in solution versus ball-milling

Allylation of phenols, a widely used reaction in multistep synthetic pathways, was herein investigated using mechanochemistry and compared to more conventional synthesis in solution.

Graphical abstract: Sustainability and efficiency assessment of vanillin allylation: in solution versus ball-milling
Communication

Zirconium-catalysed hydrosilylation of esters and depolymerisation of polyester plastic waste

A general and practical procedure for the catalytic reduction of esters has been developed using the classical Schwartz's reagent (Cp2Zr(H)Cl) as a catalyst.

Graphical abstract: Zirconium-catalysed hydrosilylation of esters and depolymerisation of polyester plastic waste
Open Access Paper

Dyes as efficient and reusable organocatalysts for the synthesis of cyclic carbonates from epoxides and CO2

The functionalised RhB-EtOH-I dye was identified as an efficient and reusable organocatalyst for the conversion of CO2 and epoxides into cyclic carbonates under mild conditions.

Graphical abstract: Dyes as efficient and reusable organocatalysts for the synthesis of cyclic carbonates from epoxides and CO2
Open Access Paper

Novel elastic rubbers from CO2-based polycarbonates

We report the synthesis of novel elastic rubbers based on polycarbonates prepared by the terpolymerisation of CO2 with a long-alkyl-chain epoxide and an unsaturated epoxide.

Graphical abstract: Novel elastic rubbers from CO2-based polycarbonates
Open Access Paper

Maleic anhydride from bio-based 1-butanol and furfural: a life cycle assessment at the pilot scale

The necessity to feed the chemical industry with bio-based platform chemicals encourages the usage of a life cycle perspective in order to evaluate potentialities and drawbacks, before launching them at the industrial scale.

Graphical abstract: Maleic anhydride from bio-based 1-butanol and furfural: a life cycle assessment at the pilot scale
Paper

A direct pathway for the coupling of arenes and alkylamines via a heterogeneous zeolite-based photocatalyst

A heterogeneous zeolite-based photocatalyst can be used for the sustainable production of N,N-dialkylamines, which have applications in pharmaceuticals, agrochemicals and organic materials.

Graphical abstract: A direct pathway for the coupling of arenes and alkylamines via a heterogeneous zeolite-based photocatalyst
Paper

Potential of catalytic oxidation of kraft black liquor for the production of biosourced compounds

Industrial kraft black liquor from maritime pine was oxidised in aqueous, alkaline medium, under air, at 150 °C, with or without a CuO/TiO2 catalyst.

Graphical abstract: Potential of catalytic oxidation of kraft black liquor for the production of biosourced compounds
Open Access Paper

Molybdate ionic liquids as halide-free catalysts for CO2 fixation into epoxides

Molybdate ionic liquids active for CO2 fixation into terminal and internal epoxides without any added halide co-catalysts are described. 95Mo-NMR spectra demonstrate the interaction and activation of CO2 with MoO4 species.

Graphical abstract: Molybdate ionic liquids as halide-free catalysts for CO2 fixation into epoxides
Open Access Paper

Chemical upcycling of poly(bisphenol A carbonate) to vinylene carbonates through organocatalysis

The chemical upcycling of poly(bisphenol A carbonate) was carried out through organocatalysis using α-hydroxyketones as nucleophiles, leading to valuable vinylene carbonates.

Graphical abstract: Chemical upcycling of poly(bisphenol A carbonate) to vinylene carbonates through organocatalysis
Paper

Efficient two-step production of biobased plasticizers: dehydration-hydrogenation of citric acid followed by Fischer esterification

We report the production of biobased plasticizers for PVC starting from citric by a two-step process comprising dehydration-hydrogenation followed by a Fischer esterification.

Graphical abstract: Efficient two-step production of biobased plasticizers: dehydration-hydrogenation of citric acid followed by Fischer esterification
From the themed collection: 2023 Green Chemistry Hot Articles
Paper

New mechanistic insights into the role of water in the dehydration of ethanol into ethylene over ZSM-5 catalysts at low temperature

We highlight the role of OH-treated weakly acidic ZSM-5 in the ethanol-to-ethylene at low temperature. Ethylene forms via (i) primary dimer from ethanol on Brønsted sites, followed by diethyl ether cracking on Lewis sites, and (ii) secondary cleavage of C–OH in ethanol over Brønsted sites.

Graphical abstract: New mechanistic insights into the role of water in the dehydration of ethanol into ethylene over ZSM-5 catalysts at low temperature
Paper

Extending the π-conjugation system of covalent organic frameworks for more efficient photocatalytic H2O2 production

Three highly crystalline and porous COFs with promising photoredox properties have been prepared. Via a post-sulfurization process, the imine-linked COFs were converted into thiazole-linked COFs, generating a highly conjugated and ultrastable photocatalyst for H2O2 production.

Graphical abstract: Extending the π-conjugation system of covalent organic frameworks for more efficient photocatalytic H2O2 production
Open Access Paper

Influence of stabilisers on the catalytic activity of supported Au colloidal nanoparticles for the liquid phase oxidation of glucose to glucaric acid: understanding the catalyst performance from NMR relaxation and computational studies

Impact of stabilisers on the catalytic performance of supported Au colloidal nanoparticles for the liquid phase oxidation of glucose to glucaric acid.

Graphical abstract: Influence of stabilisers on the catalytic activity of supported Au colloidal nanoparticles for the liquid phase oxidation of glucose to glucaric acid: understanding the catalyst performance from NMR relaxation and computational studies
Paper

Accessing secondary amine containing fine chemicals and polymers with an earth-abundant hydroaminoalkylation catalyst

Titanium-catalyzed hydroaminoalkylation has emerged as an atom-economical, earth-abundant synthesis of N-containing products.

Graphical abstract: Accessing secondary amine containing fine chemicals and polymers with an earth-abundant hydroaminoalkylation catalyst
Paper

Acid hydrolysis of chitin in calcium chloride solutions

This work describes a mild aging-hydrolysis integrated approach to selectively produce N-acetyl-D-glucosamine from chitin in cheap and abundant CaCl2-based molten salt hydrate solvents.

Graphical abstract: Acid hydrolysis of chitin in calcium chloride solutions
Paper

Synthesis of methanol by hydrogenolysis of biobased methyl formate using highly stable and active Cu-spinel catalysts in slurry and gas phase reactions

A new two-stage production route for methanol from biomass is proposed, including hydrogenolysis of methyl formate to methanol. The Cu0.9Al2O4 spinel catalyst is shown to be highly active for this reaction and stable against corrosion by formic acid.

Graphical abstract: Synthesis of methanol by hydrogenolysis of biobased methyl formate using highly stable and active Cu-spinel catalysts in slurry and gas phase reactions
Paper

High performance, recyclable and sustainable by design natural polyphenol-based epoxy polyester thermosets

Development of high-performance materials with a high content of aromatic units and high functionality, using natural and renewable polyphenolic synthons such as naringenin and phloroglucinol.

Graphical abstract: High performance, recyclable and sustainable by design natural polyphenol-based epoxy polyester thermosets
Open Access Paper

Combining eutectic solvents and pressurized liquid extraction coupled in-line with solid-phase extraction to recover, purify and stabilize anthocyanins from Brazilian berry waste

A PLE-SPE extraction process for the anthocyanins from Jabuticaba wastes was developed using an eutectic mixture, this acting simultaneously as solvent and stabilizing agent.

Graphical abstract: Combining eutectic solvents and pressurized liquid extraction coupled in-line with solid-phase extraction to recover, purify and stabilize anthocyanins from Brazilian berry waste
Open Access Paper

Valorisation of red beet waste: one-step extraction and separation of betalains and chlorophylls using thermoreversible aqueous biphasic systems

An integrated extraction–separation process: extraction and selective separation of chlorophylls and betalains using thermoreversible aqueous biphasic systems.

Graphical abstract: Valorisation of red beet waste: one-step extraction and separation of betalains and chlorophylls using thermoreversible aqueous biphasic systems
Paper

Depolymerisation–hydrogenation of condensed tannins as a strategy for generating flavan-3-ol monomers

A one-pot depolymerisation–hydrogenation xataltic process enables flavan-3-ol monomer production from condensed tannins.

Graphical abstract: Depolymerisation–hydrogenation of condensed tannins as a strategy for generating flavan-3-ol monomers
Open Access Paper

Optimisation of the electrochemical conversion of CO2 into formate in a flow cell configuration using a bismuth-based electrocatalyst

In the context of the electrochemical conversion of CO2 into valuable products, it is of crucial importance to optimise the electrochemical cell parameters towards industrially-relevant activity, selectivity and stability of the electrocatalyst.

Graphical abstract: Optimisation of the electrochemical conversion of CO2 into formate in a flow cell configuration using a bismuth-based electrocatalyst
Paper

Catalytic hydroesterification of lignin: a versatile and efficient entry into fully biobased tunable materials

Hydroxyl groups of several industrial grade lignins are esterified by palladium-catalyzed hydroesterification reactions with CO and olefins, fatty esters or 1,3-butadiene.

Graphical abstract: Catalytic hydroesterification of lignin: a versatile and efficient entry into fully biobased tunable materials
Open Access Paper

Highly stable amorphous silica-alumina catalysts for continuous bio-derived mesitylene production under solvent-free conditions

Amorphous silica-alumina are efficient and highly stable catalysts for the continuous production of biomass-derived aromatics such as mesitylene from acetone, thus adding to the potential for value creation in biorefineries.

Graphical abstract: Highly stable amorphous silica-alumina catalysts for continuous bio-derived mesitylene production under solvent-free conditions
Open Access Paper

Light-driven Pickering interfacial catalysis for the oxidation of alkenes at near-room temperature

The synergistic effect of plasmonic Au and catalytic [C12]3[PW12O40] NPs in a PIC system for light-driven alkene oxidation at Troom.

Graphical abstract: Light-driven Pickering interfacial catalysis for the oxidation of alkenes at near-room temperature
From the themed collection: 2023 Green Chemistry Hot Articles
Paper

Cu-Catalysed sustainable synthesis of formamide with glycerol derivatives as a carbonyl source via a radical-relay mechanism

N-Formylation of amines to formamides was achieved at a low temperature by total utilization of the carbon atoms of glycerol derivatives as the C1 feedstock over CuZr/5A via a ˙OH–˙OOH radical mechanism.

Graphical abstract: Cu-Catalysed sustainable synthesis of formamide with glycerol derivatives as a carbonyl source via a radical-relay mechanism
Open Access Paper

Valorization of chicken feathers using aqueous solutions of ionic liquids

The poultry-processing industry generates large quantities of waste rich in keratin, a fibrous protein representing around 90 wt% of chicken feathers, which is currently disposed of by landfilling or incineration.

Graphical abstract: Valorization of chicken feathers using aqueous solutions of ionic liquids
Open Access Paper

Unravelling and overcoming the challenges in the electrocatalytic reduction of fructose to sorbitol

In this work, we present a comprehensive study and optimisation of the electrocatalytic reduction of fructose to sorbitol and mannitol over a Cu-wire cathode, which allowed enhancing the Faradaic efficiency and achieving unprecedented product yields.

Graphical abstract: Unravelling and overcoming the challenges in the electrocatalytic reduction of fructose to sorbitol
Paper

Tandem electrocatalytic aziridination – ring expansion of simple aromatic olefins using ammonia and carbon dioxide

The telescoped electrochemical coupling of NH3 and CO2 with simple aromatic olefins is described, forming valuable N-heterocycles in an atom-efficient manner with overall yields of up to 91%. The same iodide catalyst is required for both steps.

Graphical abstract: Tandem electrocatalytic aziridination – ring expansion of simple aromatic olefins using ammonia and carbon dioxide
Paper

Highly selective cross ketonization of renewable acids over magnesium oxide

The rising demand for linear alkylbenzene surfactants (LAS) poses an environmental threat as LAS are industrially produced from petroleum using corrosive acid catalysts.

Graphical abstract: Highly selective cross ketonization of renewable acids over magnesium oxide
Open Access Paper

Acrylated soybean oil: a key intermediate for more sustainable elastomeric materials from silicones

The myriad benefits of silicone polymers can be made more sustainable by replacing much of the elastomer body with acrylated soybean oil. The crosslinked copolymers are simply made without catalysts using an aza-Michael reaction.

Graphical abstract: Acrylated soybean oil: a key intermediate for more sustainable elastomeric materials from silicones
Open Access Paper

Pd-functionalized polydopamine-coated polyurethane foam: a readily prepared and highly reusable structured catalyst for selective alkyne semi-hydrogenation and Suzuki coupling under air

Easy low-energy-cost preparation of a highly efficient and reusable single-atom-type structured catalyst for alkyne-to-alkene hydrogenation and Suzuki coupling.

Graphical abstract: Pd-functionalized polydopamine-coated polyurethane foam: a readily prepared and highly reusable structured catalyst for selective alkyne semi-hydrogenation and Suzuki coupling under air
Open Access Paper

High yield production of 1,4-cyclohexanediol and 1,4-cyclohexanediamine from high molecular-weight lignin oil

we present a highly efficient catalytic strategies which are capable of converting DMBQ obtainable from high molecular-weight lignin-oil into industrially highly relevant and well-defined 1,4-cyclohexanediol and 1,4-cyclohexanediamine.

Graphical abstract: High yield production of 1,4-cyclohexanediol and 1,4-cyclohexanediamine from high molecular-weight lignin oil
Paper

Olefin epoxidation using electricity as renewable power in a bromide-mediated electrochemical process

Epoxy motifs are versatile building blocks for use in pharmaceuticals, food additives and agrochemicals. Here, we present a highly efficient electrochemical bromide-mediated olefin epoxidation process using H2O for a broad scope of substrates.

Graphical abstract: Olefin epoxidation using electricity as renewable power in a bromide-mediated electrochemical process
Open Access Paper

Antioxidant silicone oils from natural antioxidants

Natural antioxidants, such as vitamin E and eugenol, once grafted to silicone oils maintain their antioxidant activity and dilute the quantity of silicone needed for a given application.

Graphical abstract: Antioxidant silicone oils from natural antioxidants
Paper

A sustainable way of recycling polyamides: dissolution and ammonolysis of polyamides to diamines and diamides using ammonia and biosourced glycerol

Graphical representation of Lewis acid catalyzed ammonolysis of polyamide 66.

Graphical abstract: A sustainable way of recycling polyamides: dissolution and ammonolysis of polyamides to diamines and diamides using ammonia and biosourced glycerol
39 items

About this collection

This collection comprises articles based on presentations from the International Symposium on Green Chemistry 2022 meeting held in La Rochelle, France between 16th-20th May 2022.

Guest Edited by: François Jérôme (Université de Poitiers)

Spotlight

Advertisements