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PhD defense of J. Li MSc

Molecular Rhenium and Molybdenum-based (pre)catalysts for the deoxydehydration of vicinal diols and biomass-derived polyols

Because of the depletion of fossil fuel resources as well as their gradual increase in cost, the development of new supply chains for the chemical industry that rely on renewable feedstocks, such as biomass, is highly required. So-called deoxydehydration (DODH) reactions are able to convert chemical compounds with a high oxygen content (diols and polyols), which are abundantly found in biomass-derived feedstocks, to the corresponding olefins. These olefin products are typical starting materials for chemical manufacturing, e.g. for the production of a wide range of plastics. In this way DODH reactions offer a means to produce plastics from biomass.

Jing Li’s thesis describes several different catalytic systems for the catalytic DODH of diols and polyols, with the aim to either discover new (pre)catalyst for DODH catalysis or to investigate catalyst evolution under catalytic conditions. Both low-valent and high-valent rhenium complexes have been investigated as (pre)catalysts for the DODH of diols and polyols. Using these rhenium (pre)catalysts, biomass-derived polyols can be converted into the corresponding olefins with moderate to high yields, realizing the aim of biomass conversion. The thesis also describes the development of a new molybdenum-based catalyst for DODH reactions, thereby avoiding the use of catalysts based on the relatively scarce rhenium element.

Start date and time
End date and time
Location
Online
PhD candidate
J. LI MSc
Dissertation
Molecular Rhenium and Molybdenum-based (pre)catalysts for the deoxydehydration of vicinal diols and biomass-derived polyols
PhD supervisor(s)
prof. dr. R.J.M. Klein Gebbink