Electrochemical Ceramic Membrane Reactors in Future Energy and Chemical Process Engineering

Abstract

Electrochemical ceramic membrane reactors (ECMRs) with their unique ability to efficiently couple electrical, chemical, and thermal energy sectors can be a large part of the transition toward renewable energies and defossilized economies. ECMRs utilize ceramic conductors to extract or distribute oxide ions or protons -directly controlled by an external electric current. This article gives an overview of ECMR properties along with the functionalities and advantages. For many reactions, e.g., the direct synthesis of ammonia, ECMRs are not available at the preferred temperature range of 300 -550°C. To evidence the possibility of such reactors, functional materials are reviewed. A simple thermodynamic methodology is proposed to determine the suitability of reactions for particular combinations of coupled energy sectors.

Intercalation of Thin-Film Gd-Doped Ceria Barrier Layers in Electrolyte-Supported Solid Oxide Cells: Physicochemical Aspects

“…Solid oxide electrolysis cells (SOECs) are able to produce tailormade syngas, which can be converted into synthetic fuels downstream. This unique versatility makes the SOC an attractive technology to promote the decarbonization of the energy, transport, and industry sectors via sector coupling. , …”

“…This unique versatility makes the SOC an attractive technology to promote the decarbonization of the energy, transport, and industry sectors via sector coupling. 1,2 Conventional SOCs mainly consist of ceramic components, which are brittle and susceptible toward mechanical failure during fabrication, stacking, and operation. Thus, high mechanical strength of single cells is a key factor in the development of large-scale, mature SOC technology.…”

CHEMampere: Technologies for sustainable chemical production with renewable electricity and CO2, N2, O2, and H2O

“…H-SOE is at a lower TRL, but can still contribute to a CO 2 -neutral value chain by non-oxidative dehydrogenation of short-chain hydrocarbons. [54,136] Furthermore, H-SOE is the most promising approach for direct NH 3 production with high faradaic efficiencies of up to 70% at current densities of some mA/cm 2 when using H 2 oxidation as the proton source at the anode. However, when H 2 O oxidation is performed at the anode to deliver the protons, faradaic efficiencies of 1% were not exceeded.…”

Non-Stoichiometric Redox Thermochemical Energy Storage Analysis for High Temperature Applications

“…CST is capable of providing the needed process stream at high temperatures to the HTE and has been investigated for this study. State-of-the-art HTE uses yttria-stabilized zirconia as an oxide ion conductor and is operated in the range of 700-900 • C [16]. Stacks based on these solid oxide cells can be operated at degradation rates of +0.5%/1000 h [17].…”