RT info:eu-repo/semantics/article
T1 Intensification of catalytic CO2 methanation mediated by in-situ water removal through a high-temperature polymeric thin-film composite membrane
A1 Escorihuela, Sara
A1 Cerdá-Moreno, Cristina
A1 Weigelt, Fynn
A1 Remiro-Buenamañana, Sonia
A1 Escolástico, Sonia
A1 Tena Matias, Alberto
A1 Shishatskiy, Sergey
A1 Brinkmann, Torsten
A1 Chica, Antonio
A1 Serra, Jose Manuel
AB Catalytic CO2 methanation technology can be improved by process intensification, i.e. enabling higher energy efficiency and process sustainability. Here, thin-film composite membranes (TFCM) were developed for in-situ water removal in a catalytic membrane reactor (CMR) for the Sabatier process. The selective separation layer (1.4 μm-thick) of the composite membrane is made of the polyimide 6FDA-6FpDA, a glassy polyimide, which exhibits high permeability and selectivity together with stable function at unprecedented high temperatures (>200 °C), compared to polyimides reported until now (90 °C), thus matching the temperature range of Sabatier reactors. Remarkably, TFCM developed in this work, allow to extract an outstanding amount of water up to 1 m3/(m2·h·bar) at 260 °C. TFCM was implemented for the water removal from the methanation reaction in a CMR operated at 260 °C and using Ni-Todorokite as catalyst. The TFCM-mediated water-extraction enabled to raise both catalytic stability and activity during CMR operation. CO2 conversion stability was greatly improved exhibiting a conversion value of 72 % during the course of the reaction (21 % increase in CO2 conversion), with a water removal of 12.5 % and specific flux of ∼100 g·h−1 m−2.
PB Elsevier
YR 2022
FD 2022
LK https://uvadoc.uva.es/handle/10324/72883
UL https://uvadoc.uva.es/handle/10324/72883
LA eng
NO Journal of CO2 Utilization 55 (2022) 101813
NO Producción Científica
DS UVaDOC
RD 05-abr-2025