Enzymatic Conversion of Carbon Dioxide to Methanol by Dehydrogenases Encapsulated in Sol—Gel Matrix

Solubility of carbon dioxide in aqueous solutions of 2-amino-2-hydroxymethyl-1,3-propanediol

“…More investigations on this topic were further carried out by different research groups [3,[5][6][7][8]9,10] to promote CO 2 hydration into bicarbonate ions according to the ping-pong catalytic mechanism explained by Silverman and Lindskog [11]: CO 2 (g) CO 2 (aq) (1)…”

Carbon dioxide/methanol conversion cycle based on cascade enzymatic reactions supported on superparamagnetic nanoparticles

“…Encapsulation of dehydrogenase enzymes in silica matrix exhibited methanol yields between 16.8% and 43.8%. If the gelation time was smaller than 60 seconds the methanol yield was much lower, as a result of the uneven distribution of the enzymes in the gel; however, at higher gelation times, 92% yield of methanol could be achieved (Jiang et al 2003).…”

Development of a hollow fiber membrane micro-reactor for biocatalytic production of formate from CO2

“…Consequently, enzyme immobilization is a prerequisite for industrial applications [25]. For the enzymatic conversion of CO 2 to formate or methanol, the encapsulation of dehydrogenases in a sol-gel matrix [6,9,26,27], catechol-modified gelatin microcapsules [11], liposome [28] or cationic polyelectrolyte-doped hollow nanofibers [29] is effective in improving the stability and reactivity of the biocatalysts. However, in these systems, drawbacks include the activity loss of enzymes caused by the toxic co-solvents used in the encapsulation process and the diffusion resistance of reactants through the encapsulation layer.…”