Papers by Danilo Antonio da Silva
Ecl�tica Qu�mica Journal, 2021
This study reports the application of metallo-stannosilicates as potential inorganic solid matrix... more This study reports the application of metallo-stannosilicates as potential inorganic solid matrixes for enzymes immobilization and their use as a heterogenous catalysts in enzymatic transesterification reactions for the conversion of triacylglycerides into fatty acid ethyl esters (FAEEs). Several stannosilicates were synthesized and physicochemical characterized by X-ray powder diffraction (XRD), scanning electron microscopy with energy dispersive X-ray spectrometry (SEM-EDS), Brunauer-Emmett-Teller (BET)-N2 surface area analysis and solid-state magic-angle spinning nuclear magnetic resonance (MAS NMR 29Si and 119Sn nuclei) techniques. The experimental results for enzymes immobilization were promising, especially for a nickel ion-exchanged metallo-stannosilicate, which were able to immobilize 82 +- 6% of Thermomyces lanuginosus lipase and also kept a high enzymatic activity (42 +- 3 U mg�1). Systematic catalytic reactions for conversion of refined palm oil (Elaeis guineensis) using ...
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Papers by Danilo Antonio da Silva