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In-situ Mechano-catalysis for Polymer Activation and ConTrolled Conversion

Less than 9% of plastic is recycled. Currently applied recycling technology yields degraded materials because undesired mechano-chemical bond cleavage shortens the polymer upon repeated processing. Here, I introduce a new type of... see more

31/12/2029

2M€

Project Budget: 2M€

Project leader

UNIVERSITEIT UTRECHT No se ha especificado una descripción o un objeto social para esta compañía.

TRL 4-5

PARTICIPATION DEPralty Sin fecha límite de participación.

Financing granted El organismo HORIZON EUROPE notifico la concesión del proyecto The day 2025-01-01

ERC-2024-STG: ERC STARTING GRANTS Scope:Objectives

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Cerrada does 1 year

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Este proyecto no cuenta con búsquedas de partenariado abiertas en este momento.

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Project duration: 59 months Date Start: 2025-01-01
End date: 2029-12-31

Project leader

UNIVERSITEIT UTRECHT No se ha especificado una descripción o un objeto social para esta compañía.

TRL 4-5

Project Budget 2M€

participation deadline Sin fecha límite de participación.

Project description Less than 9% of plastic is recycled. Currently applied recycling technology yields degraded materials because undesired mechano-chemical bond cleavage shortens the polymer upon repeated processing. Here, I introduce a new type of catalyst to exploit this undesired effect to recover the polymer building blocks, the monomers, which enables the production of new high-quality polymer. I will focus on polyolefins (PP, PE) that make up 50% of polymer production and for which the state-of-the-art pyrolysis process has high energy costs and does not yield pure monomer. That is because at the 600 °C needed to break the strong carbon-carbon (C-C) bonds of PP and PE unwanted reactions occur. Adding a catalyst powder, a known strategy to exert reaction control, is inefficient for polymers because they cannot reach the active sites in the catalyst pores.I will break the C-C bonds with force instead of heat. The force is provided by collision of balls in a ball mill, a mature grinding technology that I repurpose as reactor to introduce my tunable direct mechano-catalyst: I will chemically treat the surface of the balls to create catalytic, e.g., acid, sites that are in efficient contact with polymer through vigorous ball movement. In our ground-breaking proof-of-concept experiment, we were surprised to see monomer form below 60 °C from PP, and a remarkable 4x increased activity over a traditional catalyst.To realize the full potential of this new catalytic concept, I will establish the underlying fundamental framework by A) understanding the mechanism of reactions following C-C cleavage, B) developing a predictive model of cleavage rate as a function of temperature and force and C) understanding the synergistic interplay of catalytic spheres and mechano-chemical activation. To achieve this, I will develop a new methodology for in-situ spectroscopy during ball milling in combination with radical trapping and apply the tunable direct mechano-catalysts to a variety of polymers.

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