Project Details
Projekt
Sorption-Enhanced CO2 Hydrogenation to Methanol under Dynamic Reaction Conditions
Subject Area
Technical Chemistry
Term
from 2018 to 2023
Project identifier
Deutsche Forschungsgemeinschaft (DFG) - Project number 406474220
Efficient carbon capture and utilization (CCU) is a key element for a sustainable carbon neutral economy. The current CO2 separation technology (i.e., pressure swing adsorption) as well as the dynamic availability of renewable energy requires the development of processes able to operate during dynamic changes in the reactant concentrations and in the availability of renewable energy. In this project we investigate the combination of CO2 capture followed by hydrogenation to methanol with green H2 during a reactive (periodic) regeneration of the sorbent in order to utilize CO2 as abundant carbon source for the production of methanol. For being successful, dynamic operation at low temperatures and high selectivity to methanol are required to reach a sufficient methanol yield. The integrated system, in which CO2 is captured and converted by the same catalyst at the sorption temperature (or only slightly enhanced temperatures) allows to reduce the overall energy input compared to a multistep reaction system. In phase I of the project, the CO2 capture/conversion concept was shown to be feasible. It is based on a catalyst comprising an amine functionalized porous solid for CO2 sorption and a noble metal for the hydrogenation of CO2 to methanol. In phase II, the interaction of CO2 with the amine groups and the local proximity to the noble metal particles will be enhanced in order to increase the binding of CO2 and hence the rate of the reaction to MeOH. Microkinetic modeling and multiscale reactor simulations will be applied study the reaction mechanism, which will enable the rational development of novel catalytic materials required for enhancing the MeOH yield.
DFG Programme
Priority Programmes
