Maarten Jongkind

PhD Candidate
Employed since: 01-11-2016
Phone: +31 627833917
Email: m.k.jongkind@uu.nl
Room: 4th floor study area

Research

Research

New insights in the working principles of Cr/SiO2 Phillips catalysts in the presence and absence of alkyl compounds as co-catalyst

Phillips-type ethylene polymerization catalysts are responsible for more than one third of all polyethylene sold worldwide. Despite extensive research into the working mechanism of this process, there still is no univocal consensus on the active site and related catalyst activation and polymerization mechanism. Recently, the interaction between tri-ethyl aluminium, as a co-catalyst, and Cr/SiO2 Phillips catalyst has been investigated, as well as ethylene polymerization properties of this system.  During my PhD research, I will employ alkyl compounds, such as tri-ethyl borane, as a co-catalyst and investigate their interaction with the Cr/SiO2 Phillips catalyst as well as these systems’ ethylene polymerization properties. Advanced microscopy and spectroscopy methods will be used to investigate the working state of the catalytic solids under study, in the presence and absence of alkyl compounds.

C.V.

C.V.

2016 – Present 
PhD student in the group of Prof. Dr. Ir. B.M. Weckhuysen, Inorganic Chemistry and Catalysis, Utrecht University.
Topic: New insights in the working principles of Cr/SiO2 Phillips catalysts in the presence and absence of alkyl compounds as co-catalyst.

2014 – 2016  
M.Sc Chemistry Molecular Design, Synthesis and Catalysis at the Vrije Universiteit in Amsterdam.
Master Thesis:  “Nucleophillic Activation of White Phosphorus”

2011 – 2014        
B.Sc Chemistry at the Vrije Universiteit in Amsterdam

2005 – 2011 
Alkwin Kollege, Uithoorn: VWO – Nature and Technique / Nature and Health

1993
Born in Amstelveen, The Netherlands

Publications

Jongkind, M K; Meirer, F; Bossers, K W; ten Have, I C; Ohldag, H; Watts, B; van Kessel, T; Friederichs, N; Weckhuysen, B M

Influence of Metal-Alkyls on Early-Stage Ethylene Polymerization over a Cr/SiO2 Phillips Catalyst: A Bulk Characterization and X-ray Chemical Imaging Study Journal Article

Chemistry - A European Journal, 27 (5), pp. 1688-1699, 2021, (cited By 0).

Links | BibTeX

Jongkind, M K; Rivera-Torrente, M; Nikolopoulos, N; Weckhuysen, B M

Influence of Pore Structure and Metal-Node Geometry on the Polymerization of Ethylene over Cr-Based Metal–Organic Frameworks Journal Article

Chemistry - A European Journal, 2021, (cited By 0).

Links | BibTeX

Jongkind, M K; van Kessel, T; Velthoen, M E Z; Friederichs, N; Weckhuysen, B M

Tuning the Redox Chemistry of a Cr/SiO2 Phillips Catalyst for Controlling Activity, Induction Period and Polymer Properties Journal Article

ChemPhysChem, 21 (15), pp. 1665-1674, 2020, (cited By 2).

Links | BibTeX

Rivera-Torrente, M; Pletcher, P D; Jongkind, M K; Nikolopoulos, N; Weckhuysen, B M

Ethylene Polymerization over Metal-Organic Framework Crystallites and the Influence of Linkers on Their Fracturing Process Journal Article

ACS Catalysis, 9 (4), pp. 3059-3069, 2019, (cited By 2).

Links | BibTeX

Rivera-Torrente, M; Pletcher, P D; Jongkind, M K; Nikolopoulos, N; Weckhuysen, B M

Ethylene Polymerization over Metal-Organic Framework Crystallites and the Influence of Linkers on Their Fracturing Process Journal Article

ACS Catalysis, 9 (4), pp. 3059-3069, 2019, (cited By 14).

Links | BibTeX

Piovano, A; Pletcher, P; Velthoen, M E Z; Zanoni, S; Chung, S -H; Bossers, K; Jongkind, M K; Fiore, G; Groppo, E; Weckhuysen, B M

Genesis of MgCl2-based Ziegler-Natta Catalysts as Probed with Operando Spectroscopy Journal Article

ChemPhysChem, 19 (20), pp. 2662-2671, 2018, (cited By 0).

Links | BibTeX

Piovano, A; Pletcher, P; Velthoen, M E Z; Zanoni, S; Chung, S -H; Bossers, K; Jongkind, M K; Fiore, G; Groppo, E; Weckhuysen, B M

Genesis of MgCl2-based Ziegler-Natta Catalysts as Probed with Operando Spectroscopy Journal Article

ChemPhysChem, 19 (20), pp. 2662-2671, 2018, (cited By 4).

Links | BibTeX