Project 2

Catalytic conversion of lignin to aryl carboxylic acids with CO₂ (WP1)

Host institution: Aarhus University (AU), Denmark
Application Deadline: 1st April 2020
3 PhD year position. Expected start date: Mid 2020.
Remember to read the eligibility criteria here.

Objectives:

• Development of non-precious homogeneous catalysts based on e.g. nickel for performing efficient oxidative addition into carbon–oxygen bonds for cleavage of inert starting materials  
• Investigations of model lignin systems for studying the catalytic cleavage of biaryl ethers and methyl aryl ether bonds with subsequent carbon–carbon bond formation with CO₂ 
• Performing experimental mechanistic studies for understanding the individual steps of the catalytic cycle  
• Application of the developed catalytic systems with more relevant lignin molecules such as lignin oligomers  
• During the secondments, scale up experiments of developed reactions to industrial settings (at HT) and evaluation of catalyst performance under immobilised heterogeneous conditions (at SU)  

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Expected results:

• Effective catalysts for aryl ether cleavage  
• A synthetic route to aryl carboxylic acids and polymer building blocks from biomass deconstruction  
• Mechanistic understanding of the factors governing aryl oxygen bond cleavage with non-precious transition metal catalysts  

Planned secondment(s):

• Industrial secondment to HT with Dr. Tolborg (2 months): Optimization of reaction conditions for industrial applications (with ESR4).
• SU with Prof. Martín-Matute (3 months): Work on immobilization of single-site carboxylation catalysts into MOFs (with ESR3).

Enrolment in Doctoral degree: Aarhus University, Denmark

Principal Supervisor: Prof. Troels Skrydstrup (AU)

Questions? Write to us at co2perate@uit.no.