RT info:eu-repo/semantics/article
T1 Formic acid production by simultaneous hydrothermal CO2 reduction and conversion of glucose and its derivatives
A1 Anderez Fernández, María
A1 Ferrero, Sergio
A1 Queiroz, Joao Paulo Silva
A1 Pérez Velilla, Eduardo
A1 Álvarez González, Celedonio Manuel
A1 Martín Martínez, Ángel
A1 Bermejo Roda, Maria Dolores
K1 Sodium bicarbonate
K1 Bicarbonato de sodio
K1 Subcritical water
K1 Agua subcrítica
K1 Acetic acid
K1 Ácido acético
K1 Lactic acid
K1 Ácido láctico
AB Background: The hydrothermal reduction of CO2 using organic molecules such as alcohols can produce renewable fuels and platform chemicals, such as formic acid (FA). If the process is performed using glucose as reductant, the yield is especially high, because FA is selectively produced both by reduction of CO2 and by degradation of glucose degradation in alkaline hydrothermal media.Methods: This article analyzes the origin of formic acid using NaH13CO3 as CO2 source, assisted by HPLC and 13C-NMR to study the origin of FA.Significant findings: Results show that two reactions pathways take place: the first one, at short reaction times, consists on the decomposition of glucose into formic acid and other by-products, achieving low yield to FA-13C, whereas longer reaction times lead to a higher yield to FA-13C. Similarly, temperature plays an important role, being 300°C the optimal. Further reactions were performed using the main by-products of previous reactions (acetic acid, lactic acid, glycolaldehyde and glyceraldehyde) as reductants to understand the reaction mechanisms. Results indicate that the reduction pathway of NaHCO3 take place by oxidation of the by-products rather than by the oxidation of glucose itself, needing long reaction times to achieve significant high ratios of FA-13C/ total FA.
PB Elsevier
SN 1876-1070
YR 2022
FD 2022
LK https://uvadoc.uva.es/handle/10324/55380
UL https://uvadoc.uva.es/handle/10324/55380
LA eng
NO Journal of the Taiwan Institute of Chemical Engineers, 2022, vol. 139, 104504
NO Producción Científica
DS UVaDOC
RD 06-ago-2024