RT info:eu-repo/semantics/article
T1 Hydrothermal CO2 conversion using zinc as reductant: Batch reaction, modeling and parametric analysis of the process
A1 Román González, Daniel
A1 Moro, Alberto
A1 Burgoa, Fernando
A1 Pérez, Eduardo
A1 Nieto Márquez, Antonio
A1 Martín Martínez, Ángel
A1 Bermejo Roda, Maria Dolores
K1 Reducción de CO2
K1 Hidrotermal
K1 Zinc
K1 Ácido fórmico
K1 CO2 reduction
K1 Hydrothermal
K1 Formic acid
AB Hydrothermal CO2 reduction using Zn as reductant was investigated. This process has the advantage of avoiding the use of hydrogen with all its safety and environmental concerns, and allows an easy integration with CO2 capture as NaHCO3. In this work, this reaction was studied in batch reactors at temperatures from 275 to 325 °C. Conversions up to 60% were obtained with 100% selectivity towards formic acid, at reaction times between 10 and 180 min. A mathematical model correlated with data from literature was developed and is able to correctly predict both experimental and literature data with an averaged error of 3.5%. Main variables of the process were analyzed: temperature, Zn/HCO3− ratio, heating rate, Zn particle size, pressure, etc. The optimum reaction conditions found were 300 °C with a rapid heating, and particle sizes of 10 μm. Zn excess dramatically improves the yield, but a lower excess can be compensated at high pressures.
PB Elsevier
SN 0896-8446
YR 2018
FD 2018
LK http://uvadoc.uva.es/handle/10324/33202
UL http://uvadoc.uva.es/handle/10324/33202
LA eng
NO The Journal of Supercritical Fluids, 2018, Volume 140, Pages 320-328
NO Producción Científica
DS UVaDOC
RD 30-abr-2024