In this dissertation iron-based homogeneous catalysts were synthesized, characterized and investigated for water oxidation activity.

To construct catalysts that can produce fuels from CO2 innumerable times, we need to learn much more about how catalysis works. Irene Groot is conducting groundbreaking research into catalysis at the atomic level.

In this dissertation, the synthesis and characterization of a series of iron complexes based on different ligand platforms are described.

D. Fontijn, Quentin Bourgeois & Arjan Louwen (eds) (2012). This publication describes the history of “barrow landscape” near Echoput in Apeldoorn. Two burial mounds were examined and it became clear that our prehistoric predecessors carefully managed and maintained the open area for a long time, before…

Promotor: M.T.M. Koper, Co-Promotor: L.B.F. Juurlink

From surface science towards industrial practice using high-pressure scanning tunneling microscopy.

The dissertation describes TEM experiments on heterogeneous catalysts.

PhD Defence

Before the large scale use of renewable energy sources can be implemented in our society, the storage of electrical energy needs to be tackled. Storage the energy as hydrogen via the reduction of protons is a good option.

Human civilization consumes a huge amount of fossil fuels, which has resulted in an atmospheric CO2 level which has not been higher in over 800 millennia.

An environmental and palaeo-economic reconstruction.

Cars are equipped with catalysts to disarm toxic exhaust gases. Platinum plays an important role there. Leiden physicists and chemists have now for the first time seen the mechanism behind a platinum catalyst. With a fundamental understanding of the process, scientists can use this rare material more…

With the energy transition toward a renewable energy supply and a CO2-neutral economy, electrification of the energy system is rising in importance, which leads to the challenge of long-term storage of renewable electricity.

Promotor: Prof.dr. J.W.M. Frenken

M. Danhof, Co-promotor: O.E. Della Pasqua

Promotors: Prof.dr. E. Bouwman, Prof.dr. E. Drent

PhD Defence

An international team of researchers, including Federico Calle-Vallejo of Leiden University’s Institute of Chemistry, have taken the atomic-scale design of catalysts to the next level. Their research contributes to the quest for a method to generate or store energy more efficiently. The report is published…

ASLU 7 - A.E. de Hingh

Metal complexes and 2D materials like graphene were combined to produce structures that can function as sensors.

Since its inception, a central preoccupation of and for the International Criminal Court (ICC) has been the nature of its relationship to national jurisdictions. Complementarity—the idea that the Court is intended to supplement, not supplant, national jurisdictions—has been the dominant juridical logic…

A discovery made in Leiden helps not only to make natural gas from CO2 but also to store renewable energy. Research by Professor Marc Koper and PhD student Jing Shen shows how this process can be implemented in a cost-effective and controllable way. Nature Communications, 2 september 2015.

Catalysts are indispensable in everyday life. We know what they do and more or less how they do it, but we still lack a fundamental understanding about their functioning at an atomic scale. Therefore, Irene Groot from the Leiden Institute of Chemistry develops new measuring techniques to unravel the…

Physical chemist Rik Mom developed a revolutionary way to investigate catalysts in action in detail. For this work he received the distinction cum laude during his PhD defence on 29 June.

In 2005 Leiden's municipal archaeologists excavated a 2,700-year-old canoe dug out from a tree trunk. Researchers from Material Culture Studies are now building a reproduction of this vessel using replicas of Iron Age tools. The researchers are hoping to gain a better understanding of the building p…

A catalyst: normally a substance that speeds up a chemical reaction, without adding molecules to this reaction. Scientists from the group of Prof. Marc Koper of Leiden University and Prof. Yang Shao-Horn of MIT now discovered that in specific reactions that need oxygen, catalysts called metal oxides…

On the 6th of July, wood specialists, members of the canoe club Natsec, a professional boat builder, volunteers of the Vlaardingen Broekpolder and students and staff of the Faculty of Archaeology of the Leiden University gathered on the waterfront in Vlaardingen. Two reconstructions of prehistoric canoes…

Research of the Leiden Institute of Chemistry into the development of a sustainable fuel cell has accidentally resulted in an exceptionally efficient catalyst for the production of hydrogen peroxide. The catalyst, discovered by Dennis Hetterscheid and PhD candidate Michiel Langerman, may lead to a more…

There have been indications for decades that there is a link between increased iron levels in the brain and Alzheimer’s disease. Leiden physicists find this connection as well, thereby now making a distinction between different forms of iron. They identify specific iron forms that increase in Alzheimer’s…

For many years, scientists have observed a correlation between Alzheimer’s disease and a surplus of iron in the brain. However, a causal link between the two has not been proven yet. We lack knowledge concerning the specific form of iron that is involved in the development of neurodegenerative diseases.…

Physicists Lucia Bossoni and Martina Huber have been awarded an NWA Ideeëngenerator-grant for research into iron nanoparticles in the brain. These nanoparticles may be linked to air pollution and Alzheimer's disease.

Lecture

In 2017 Sasja van der Vaart-Verschoof defended her dissertation on Early Iron Age elite burials of the Low Countries at the Faculty of Archaeology. Out of 36 applications from ten different countries, her dissertation was awarded the Prix Européen D’Archéologie Joseph Déchelette on June 15th.

In August 2010 the Faculty of Archaeology conducted an excavation in the Maashorst-area, situated in the northeastern part of Brabant.

In the last decade, the redox interconversion between metal thiolate and disulfide compounds has been extensively investigated for copper, but not for other transition metal ions.

The first decade of excavations at Oss

December 5th, Antoaneta Dimitrova associated with the Institute of Public Administration, was one of the main guests at the conference "25 Years After the Fall of the Iron Curtain". The conference was held by the European Commission and European the Economic and Social Committee to mark the historic…

This research seeks to understand the rise and social and ideological meaning of the chieftains’ burials in the Low Countries and their relation to the Fürstengräber in Central Europe.

Scientific research, heritage management and public outreach intertwined.

A full overview of MCBIM PhD theses.

Juurlink

Volume 20 contains eight articles based on research of the Faculty of Archaeology, Leiden University.

What can the composition and arrangement of urnfield graves tell us about the social and ideological believes of the urnfield period societies?

Promotors: Prof.dr. P.J. Punt, Prof.dr. C.A.M.J.J. van den Hondel

Synthetic fuel is cleaner than natural oil, but its production process needs to be more efficient. Now for the first time, physicists have directly observed the molecules produced in the chemical process. This paves the way for designing more efficient catalysts. Publication on September 19th in Nature…

Promotor: J.W.M. Frenken Co-Promotores: I.M.N. Groot; L.B.F. Juurlink