Themed collection International Symposium on Green Chemistry 2025

The energy transition faces challenges towards a global resilient energy sector based on renewable energies. We discuss the requirements for the implementation of H₂−/CCUS-based large scale energy storage systems coupled with renewable energies.

The industrial potential of pilot-scale reductive depolymerization approaches is critically assessed from a technical, techno-economic, and application point of view.

In this work, trialkylamine-functionalized ionic liquids were assessed for their dual role as solvents and ligands in the biphasic reductive hydroformylation of methyl 10-undecenoate (MU), a renewable substrate derived from castor oil.

Advantages/disadvantages of heterogeneous CeO₂ and homogeneous DBU catalysts were fairly compared for the direct production of cyclic compounds from CO₂ and either monoethanolamine or ethylenediamine via a detailed kinetic study.

Cu–MEA complexation characterized at different pH values. EMAR and electrochemical pH swing systems tested, both separately and in combination.

Microwave-assisted solvent-free synthesis of antiviral furanochalcones using recyclable MgO: a sustainable protocol.

New mechanochemical strategy for producing lipoamino acids through amidation was studied. The methodology was applied to produce amphiphilic silk sericin lipopeptides.

The one-pot synthesis of cyclic carbonates from carbon dioxide and styrenes using a potentially recyclable oxidant was realised with a single, homogeneous quaternary ammonium halide catalyst.

In response to the growing need to eliminate toxic isocyanates in polyurethane production, the synthesis of composite non-isocyanate polyurethane (NIPU) foams starting from a novel blend of bio-based cyclic carbonates is presented.

A new catalytic strategy was developed to synthesise a fully renewable bis-cyclic carbonate from dimethyl 2,5-furandicarboxylate and glycerol carbonate.

Homogeneously manganese catalyzed methanol synthesis from synthesis gas is achieved under continuous operation with product separation and catalyst recycling via distillation. Molecular deactivation routes are uncovered and effectively counteracted.

A novel catalytic strategy using Ru/TiO₂ enables selective ring hydrogenation or ring-opening of biomass-derived 5-hydroxymethylfurfural. Combined experimental and theoretical studies elucidate structure–activity relationships and reaction pathways.

Hydroxyapatite was synthesized from eggshell, after dissolution in ascorbic acid, a green, non-toxic reagent. Avoiding thermal treatment permits enhancement of energy efficiency.

Bio-based hyperbranched polymers were used as precursors for the design of self-healing and recyclable pressure sensitive adhesive materials.

A global and sustainable strategy for biobased ethyl formate and methyl formate production from Pelargonium graveolens EO.

Dry reforming of methane (DRM) provides a promising strategy for combating global warming by concurrently converting two greenhouse gases, CH₄ and CO₂, to value-added syngas. The Ni/HTASAO5 catalyst exhibited high activity and stability at 900–1000 °C.

Our study addresses a critical challenge in the development of thermally stable, selective, and efficient catalysts for lean methane (CH₄) combustion.

A sustainable and scalable strategy for the glycolytic depolymerization of polyurethane foam (PUF) waste, based on the ionic liquid technology under mild conditions, provides a suitable starting material for re-synthesis of new flexible PUF.

This study identifies low-cobalt blue pigments as sustainable alternatives to traditional CoAl₂O₄, combining a good colouring performance with significantly reduced environmental impacts through Life Cycle Assessment (LCA).

Selective hydrogenation of 2-methyl-3-butyn-2-ol to 2-methyl-3-butene-2-ol in water at room temperature with titania-supported Ni catalysts.

Pseudoionone, obtained from citral, is transformed into 1-methyl-1,3-cyclohexadiene in 31% yield by ring closing metathesis, while 63% yield is achieved using a stereoisomer prepared from neral.

Harmless chemical recycling of polyurethane foams: depolymerization with diethyl carbonate allows deep recovery of both constituting monomers, i.e. polyols and diisocyanates, without requiring phosgene as toxic and wasteful reagent.

Cavitation bubbles, formed by the ultrasonic irradiation of water at a high frequency, induce the catalyst-free N-dealkylation of aniline derivatives, opening an alternative pathway to transition metals and hazardous solvents or oxidants.