Development of milli and micro-scale production technology is a hot topic in current chemistry and chemical engineering.Microreactors associate with process intensification concept meaning a reduction in equipment size by several orders of magnitude causing a remarkable drop in capital and energy costs along with the environmental impact.The aim of this work is to develop microreactor technology to be applied in selective oxidation of molecules from biomass; focuses on the catalytic oxidation of the hydroxyl and carbonyl groups in molecules from biomass.The technology is based on the use of selective heterogeneous catalysts in continuous microstructured devices(fig 1).Gold(Au)was used as catalyst.The target molecules are aldehydes,esters and carboxylic acids which are needed as intermediates and end products.Acids and aldehydes from alcohols are important intermediates in chemical,pharmaceutical and alimentary industries.Herein,it is discussed about development of microreactor plates coating via suspension method with heterogeneous Au/Al2O3 catalyst with the aim of optimizing stability,homogeneity and thickness of the catalyst layer.