Dr. Ina Vollmer - Inorganic Chemistry and Catalysis

Research

Researcher unique identifier (ORCID): 0000-0001-9917-1499
UU Website: https://www.uu.nl/staff/IVollmer
X: @InaVollmer_DE
Linkedin: https://www.linkedin.com/in/ina-vollmer-84327959/

News
A recent article on NewScientist explains how Mechanochemistry is the new chemistry, featuring our work.

Watch the 1 minute Eye-opener by PhD student Adrian Hergesell on Mechano-catalytic depolymerization.

Ina Vollmer featured in the newspaper Het Financieele Dagblad (subscription only, Dutch).

Read the recent interview about the Catalytic Extrusion project together with project partner Coperion.

Want to learn more about our research? Watch Ina Vollmer’s Youtube lecture as part of the CMCC Mechanochemistry discussion series

ERC Starting grant, NWO Demonstrator grant and Circular plastics grant for mechano-catalysis

Het Parool (Dutch) reports on our technology of converting plastic via force instead of heat in the ball mill.

Research
The majority of plastic waste is landfilled, burned or leaks to the environment. Unfortunately, only 12 % (by weight) is recycled globally, mainly because the predominantly applied recycling technique of melting and re-extrusion produces a lower quality plastic. Therefore, chemical depolymerization of plastic has been studied to produce monomers which can be used to make high-quality plastic again. For polyolefins, however, only a very mixed, low value hydrocarbon stream was obtained thus far.⁴ This is because thermal cracking of the strong polyolefin bonds evokes random bond scission, uncontrolled further reaction and thus the formation of various products besides monomers.

My expertise is in mechano-chemistry¹ and mechano-catalysis^2-4, chemical recycling of plastics,^5-9 and heterogenous catalysis^8-10 as well as polymer chemistry and radical analytics. I teach polymer chemistry and electron spin resonance spectroscopy.

The research of the plastic recycling team focusses on developing pathways for the low temperature selective chemical recycling of plastic waste to chemical building blocks like aromatics,^{6, 7} carboxylic acids⁹ and monomers^1-3. I am especially interested in using mechano-catalysis to drive the depolymerization and cracking reactions of polyolefins. Mechano-chemistry is a rather less developed field of chemistry where reactions are driven not by thermal energy, electrons or photons but rather by mechanical strain, which can lower the activation energy needed to be overcome for bond cleavage. This strain can, for example, be applied in a ball mill.

We developed a surface activated mechano-catalyst (SAM cat), which we patented.^2-3 Instead of adding catalyst as powder to the ball mill, we functionalize the grinding spheres directly. This significantly improves performance. The catalyst is placed right where the energy input into the system is the highest, at the impact point of the spheres. In addition, it avoids difficulties in bringing the powder catalyst, polymer and grinding spheres together at the same location at the same time.

Supervised Postdocs:
Dr. Laëtitia Delarue
Dr. Viviana Ospina

Supervised PhDs (co-supervisor Bert Weckhuysen):
Sarah Schmidt
Laura Seidling
Simone Mosk
Adrian H. Hergesell

Co-supervised PhDs (main promoter Bert Weckhuysen):
Sebastian Rejman
Tom Smak
Jochem van de Minkelis
En Chen

Graduated PhDs (main promoter Bert Weckhuysen):
Michael Jenks
Kordula Schnabl

Alumni:
Claire L. Seitzinger

Videos/Webinars:

2022, “Is a world without plastics possible?” , studium generale of UU
2021, “Is chemical recycling of plastics the future”, Royal Society of Chemistry
2021, “Turning the tide on plastic”, The Conference Board

Open Science:
I lead the activities towards digitalization in the group according to the principle of findable, accessible, interoperable and reusable data (FAIR). We have set up a procedure for data storage on the Yoda server of UU that is then published openly via a doi link. We have also set up a group wiki and electronic lab journals and are currently setting up a server infrastructure to automatically back up all raw measurement data from over 40 lab instruments.

(1) Aydonat, S., Hergesell, A. H., Seitzinger, C. L., Lennarz, R., Chang, G., Sievers, C., Meisner, J., Vollmer, I., & Göstl, R., Leveraging mechanochemistry for sustainable polymer degradation. Polymer Journal, 2024, 56(4), 249–268. https://doi.org/10.1038/s41428-023-00863-9

(2) Hergesell, A. H., Baarslag, R. J., Seitzinger, C. L., Meena, R., Schara, P., Tomović, Ž., Li, G., Weckhuysen, B. M., & Vollmer, I. Surface-Activated Mechano-Catalysis for Ambient Conversion of Plastic Waste. Journal of the American Chemical Society 2024, 146(38), 26139–26147. https://doi.org/10.1021/jacs.4c07157

(3) Vollmer, I., Hergesell, A.H., Seitzinger, C.L, Baarslag, R.J., patent application, EP24170863.5

(4) Vollmer, I., Hergesell, A.H., Weckhuysen, B.M., patent application, PCT/NL2023/050544

(5) Vollmer, I., Jenks, M.J.F., Roelands, M.C.P, White, R.J., van Harmelen, T., de Wild, P., van der Laan, G.P., Meirer, F., Keurentjes, J.T.F., Weckhuysen, B.M., Beyond Mechanical Recycling: Giving New Life to Plastic Waste. Angew. Chem. Int. Ed. 2020, 59 (36), 15402–15423, doi.org/10.1002/anie.201915651

(6) Vollmer, I., Jenks, M. J. F., González, R. M., Meirer, F. & Weckhuysen, B. M., Plastic Waste Conversion over a Refinery Waste Catalyst. Angew. Chem. Int. Ed., 2021, 60 (29), 16101–16108, doi.org/10.1002/anie.202104110

(7) Rejman, S., Vollmer, I., Werny, M., Meirer, F., Vogt, E., Weckhuysen, B. M., Transport Limitations in Polyolefin Cracking at the Single Particle Level, Chem. Sci., 2023, 14(37) 10068-10080, doi. org/10.1039/D3SC03229A (data available at: doi.org/10.24416/UU01-72ZJU1)

(8) Thevenon, A., Vollmer, I., Towards a Cradle-to-Cradle Lifecycle for Polyethylene, Angew. Chem. Int. Ed., 2023, 62 (3), e202216163, doi.org/10.1002/anie.202216163

(9) Smak, T. J., de Peinder, P., van der Waal, J. C., Altink, R., Vollmer, I., & Weckhuysen, B. M., Oxidative Conversion of Polyethylene Towards Di-Carboxylic Acids: A Multi-Analytical Approach. ChemSusChem, 2023, 17 (7), e202301198. doi.org/10.1002/CSSC.202301198

(10) Vollmer, I., Kosinov, N. Szécsényi, Á, Li, G., Yarulina, I, Abou-Hamad, E., Gurinov, A., Ould-Chikh, S., Aguilar-Tapia, A. Hazemann, J.L., Pidko, E., Hensen, E. J. M., Kapteijn, F., Gascon, J., A site-sensitive quasi in-situ strategy to characterize Mo/HZSM-5 during activation, J. Catal. 2019, 370, 321-331, doi.org/10.1016/j.jcat.2019.01.013

(11) Vollmer, I., van der Linden, B., Ould-Chikh, S., Aguilar-Tapia, A., Yarulina, I., Abou-Hamad, E., Sneider, Y.G., Olivos Suarez, A.I., Hazemann, J.L., Kapteijn, F., Gascon, J., On the dynamic nature of Mo sites for methane dehydroaromatization, Chem. Sci. 2018, 9 (21), 4801–4807, doi.org/10.1039/C8SC01263F

(12) Vollmer, I., Ould-Chikh, S., Aguilar-Tapia, A., Li, G., Pidko, E., Hazemann, J.L., Kapteijn, F., Gascon, J., Activity Descriptors Derived from Comparison of Mo and Fe as Active Metal for Methane Conversion to Aromatics. J. Am. Chem. Soc. 2019, 141 (47), 18814–18824, doi.org/10.1021/jacs.9b09710

(13) Vollmer, I., Abou‐Hamad, E., Gascon, J., Kapteijn, F., Aromatization of ethylene–main intermediate for MDA?, ChemCatChem 2020, 12 (2), 544-549, doi.org/10.1002/cctc.201901655

C.V.

2021 – now Assistant professor in Chemistry, Utrecht University (UU), The Netherlands

2019 – 2021 Postdoctoral fellow in Chemistry, UU, The Netherlands

11/03/2019 PhD in Chemical Engineering/Heterogenous Catalysis, Delft University of Technology (TUDelft), The Netherlands, supervisors: Prof. Freek Kapteijn and Prof. Jorge Gascon

2015 Master in Chemical Engineering, Massachusetts Institute of Technology (MIT), The United States

2013 Bachelor in Process Engineering, Hamburg University of Applied Science (HAW Hamburg), Germany

Successful grants:

2024, Demonstrator grant of the Dutch Research Council (NWO) (160k Euro)
2024, European Research Council Starting Grant (ERC StG) (1.625 million Euro)
2024, National Growth Fund Circular plastics NL Grant (660k Euro)
2023, Private partnership subsidy (PPS) funding with Carboliq GmbH as industrial partner, received from TKI Groene Chemie & Circulariteit (108k Euro)
2022, Open competition XS grant by NWO for groundbreaking high-risk ideas (50k Euro).
2021, Veni grant for conducting 3 years of independent research (250k Euro) by the Talent program of NWO.

Invited lectures:

2024, CHAINS conference, The Netherlands
2024, CMCC Mechanochemistry discussion series, online
2024, German Chemical Society (GDCh) Makro, Dresden, Germany
2024, Cell Press Symposium, Cardiff, United Kingdom
2024, Max Planck Institute (MPI) for Sustainable Materials, Düsseldorf, Germany
2024, GDCh lecture series at Heinrich Heine University Düsseldorf, Germany
2024, MPI for Dynamics of Complex Technical Systems, Magdeburg, Germany
2023, American Chemical Society (ACS) Fall Meeting, San Diego, USA
2023, Celebration of the Stratingh Institute at University of Groningen, Groningen, The Netherlands
2023, Center for Zeolites and Nanoporous Materials of the French National Center for Research (CNRS) upon invitation of Prof. Svetlana Mintova, Caen, France
2023, American Chemical Society Green Chemistry & Engineering Conference, online
2022, ACHEMA, Frankfurt, Germany
2022, European Industry and Energy Summit, Amsterdam, Germany
2022, University of Cambridge, online
2022, Advanced Research Chemical Building Blocks Consortium (ARC CBBC) annual symposium, Groningen, The Netherlands
2022, Technical University of Ilmenau, Ilmenau, Germany
2021, ACS Spring Meeting, San Diego, USA

Editorial activity, moderating, organization of symposia:

2024, editor for Applied Catalysis A: General
2023, guest editor for a joint themed issue “Plastic conversion” of the journals Catalysis Science & Technology and Polymers, https://doi.org/1039/D3PY90069J
2021, moderator of panel discussion on chemical recycling of plastics during the 10^th Anniversary Symposium of the Catalysis Science & Technology
2021, organizer of focus session on recycling of plastics supported by ARC CBBC at the CHAINS conference in the Netherlands.
Peer review for ACS Sustainable Chemistry & Engineering, Angewandte Chemie, Applied Catalysis A and B, Chemical Engineering Journal, Energies, Journal of Catalysis, Nature Chemistry, ACS Catalysis, Separation and Purification Technology, and Applied Sciences. I also review proposals for the Flanders Innovation & Entrepreneurship (VLAIO) Moonshot program and the Stanford Synchroton Radiation Lightsource (SSRL) and am in the topic committee of the International Catalysis Conference (ICC) in 2024.

Teaching:

2023, We developed a new MSc. program at UU on sustainable and circular chemistry starting in 2024, in which we promote interdisciplinary research. We integrate life cycle, technoeconomic and toxicity assessment as well as systems thinking, societal and environmental impact into the curriculum centered around catalysis and chemistry.
2022, together with three other PIs, we developed a BSc. level polymer chemistry course at UU of which I am the coordinator.
Since 2021, I am teaching electron spin resonance spectroscopy in the BSc. level course “Spectroscopy of Molecules and Materials” at UU
Since 2021, together with another PI, we developed a BSc. level sustainable chemistry course that we teach at the University College Utrecht (UCU)
Since 2021, I teach a guest lecture on chemical recycling of plastics at the Hogeschool Utrecht (HU)
Since 2021, I teach a guest lecture on transport phenomena in heterogeneous catalysis at UU

Committee work:

Since 2023, member of the faculty of science council of UU.
Since 2023, member of the faculty advisory board research IT looking at ways to promote open science and data at the faculty of science at UU
Since 2022, board member of the Institute for Sustainable and Circular Chemistry (ISCC) at UU.
2022-2023, member of the committee assessing and promoting the societal, economic and judicial impact of research at UU.
Since 2021, member of ARC CBBC

Journalistic experience:

2011-2017, journalistic education via a scholarship from the German Konrad-Adenauer foundation
2014, internship as scientific journalist at the magazine MIT Technology Review in Hannover, Germany (6 weeks)
2012, internship as business editor at Nation Multimedia Group in Bangkok, Thailand (2 months)
2012, internship at the German Press Agency (DPA) (2 months)

News

24 February 2025

A New Way of Recycling Plastics – with Adrian

Ever wanted to know how ball milling works? In an easy to understand outreach video, Adrian Hergesell explains how ball milling works, and how it can help in recycling plastics […]

16 September 2024

Three grants for Ina Vollmer

Assistant professor Ina Vollmer has recently received an ERC Starting Grant of 1.6 million euros, the Incubator grant from Circular Plastics NL for 660k euros and a NWO Demonstrator grant of 160k […]

16 September 2024

Two available PhD Positions: Mechano-Catalytic Depolymerisation of Plastic Waste

Are you looking to do a PhD project and are you interested in catalysis, spectroscopy, mechano-chemistry, or polymer science to develop a sustainable pathway for plastic waste recycling through mechano-catalytic […]

08 July 2024

Two ICC projects received funding within National Growth Fund programme Circular Plastics NL

How do we ensure that we can reuse plastic packaging material? Or how can dyes in PET bottles be reused and contribute to making plastics circular? Two research projects within […]

20 May 2022

Ina & Ward received an NWO XS grant for curiosity-driven research

Ina Vollmer and Ward van der Stam (both ICC) have received an NWO XS grant of 50.000 euro for curiosity-driven research into new ways to recycle plastic and CO2. Ina […]

11 May 2021

Where has all the plastic gone? Ina Vollmer & Florian Meirer interviewed about plastic in the environment

Ina Vollmer and Florian Meirer have been interviewed for an in-depth article about plastic in the environment: 99 percent of all the plastics in the ocean is missing. We know […]

Publications

Minkelis, Johan H.; Hergesell, Adrian H.; Waal, Jan C.; Altink, Rinke M.; Vollmer, Ina; Weckhuysen, Bert M.

Catalytic Pyrolysis of Polyethylene with Microporous and Mesoporous Materials: Assessing Performance and Mechanistic Understanding Journal Article

In: ChemSusChem, vol. 18, no. 7, 2025, (Cited by: 0; All Open Access, Hybrid Gold Open Access).

Research

Research

C.V.

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News

A New Way of Recycling Plastics – with Adrian

Three grants for Ina Vollmer

Two available PhD Positions: Mechano-Catalytic Depolymerisation of Plastic Waste

Two ICC projects received funding within National Growth Fund programme Circular Plastics NL

Ina & Ward received an NWO XS grant for curiosity-driven research

Where has all the plastic gone? Ina Vollmer & Florian Meirer interviewed about plastic in the environment

Publications

Other publications

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