1. DST‐NRF Centre of Excellence in Catalysis (c*change), Department of Chemistry and Polymer ScienceStellenbosch University Private Bag 1, Matieland 7601 Stellenbosch South Africa
2. Catalysis and Synthesis Research Group, Focus Area for Chemical Resource BeneficiationNorth‐West University 11 Hoffman Street Potchefstroom 2520 South Africa