Catalytic esterification Esters 3 Fatty acids 3 Biodiesel 2 Fatty acid methyl ester 2 Feedstocks 2 Molar ratio 2 Nanocatalysts 2 Palm fatty acid distillate 2 Reaction temperature 2 Reusability 2 Aldehydes 1 Batch reactors 1 Binary alloys 1 Biodiesel production 1 Catalysts 1 Catalytic performance 1 Chromium alloys 1 Chromium compounds 1 Combustion 1 Condensation 1 Condensation reactions 1 Efficient catalysts 1 Esterification 1 Free fatty acids 1 Fuel additives 1 Functionalizations 1 Functionalized silica 1 Furfural 1 Heterogeneous acid catalysts 1