CO₂ Conversion by Membrane Reactors

J Nanosci Nanotechnol. 2019 Jun 1;19(6):3124-3134. doi: 10.1166/jnn.2019.16649.


Membrane reactors technology represents a promising tool for the CO₂ capture and reuse by conversion to valuable products. After a preliminary presentation of the fundamentals of this technology, a critical overview of the last achievements and new perspectives in the CO₂ conversion by membrane reactors is given, highlighting the still existing limitations for large scale applications. Among the low temperature (≤100 °C) membrane reactor for CO₂ conversion, electrochemical membrane reactors and photocatalytic reactors, represent the two mainly pursued systems and they were discussed starting from selected case studies. Dry reforming of methane and CO₂ hydrogenation to methanol were selected as interesting examples of high temperature (>100 °C) membrane based conversion of CO₂ to energy bearing products.